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Doosan Solar 255LC-V. Operation and Maintenance Manual (2002) - page 2

MULTIFUNCTION GAUGE AND GRAPHIC

INFORMATION

When the engine starter switch is turned to "I"

(ON) position, a moving excavator will appear

on the screen for about 2 seconds.

When the moving excavator disappears, a

screen for multifunction and digital clock will

sequentially appear.

ARO0670L

Figure 35

The engine rpm, battery voltage and hydraulic

pump pressure are displayed with numeric

readings and a digital clock is found in the upper

portion of the display.

02/05

[MO] 11:30A

Each time the display selection button

(15,

Figure

23) is pressed, the digital readout

ENG SPEED

changes in the following sequence; Engine

speed (RPM) -> Battery voltage (VOLT) -> Front

pump pressure (BAR) -> Rear pump pressure

(BAR).

1950

RPM

NOTE: See Figure 39 thru Figure 42.

ARO0160L

By using a combination of the mode selection

Figure 36

buttons, information for filters and oils can also

be displayed.

The display can be set for the desired language.

Refer to the “Setting Method for Main Menu” on

page 2-26 for the language selection and

information display method.

COMMUNICATION INDICATOR

Indicates the condition of communication

between main controller and instrument panel.

1.

Normal Condition:

The symbol will sequentially move like

lightening.

NOTE: See Figure 39 thru Figure 42.

2.

Abnormal Condition:

If the symbol is not displayed, it means

ARO0090L

there is a communication error.

Figure 37

NOTE: See Figure 38.

022-00031E Operation and Maintenance Manual

Operating Controls 2-19

COMMUNICATION ERROR WARNING

If a communication error is generated between

e-EPOS controller and instrument panel, this

02/05

[MO] 11:30A

screen will be displayed.

When this screen is displayed, contact a

DAEWOO distributor or sales agency.

COMM.

NOTE: If a communication error occurs

during operation, the last mode

Error!!

setting is stored. E.g. power

mode, work mode and auto idle

are stored during failure.

ARO0610L

Figure 38

NOTE: When starter switch is turned to

the "I"

(ON) position during a

state of communication error

failure, the e-EPOS controller

will default to the following

modes.

Power mode: Standard mode

Working mode: Digging mode

Auto idle: "ON" (Selection state)

1.

ENGINE SPEED

The engine speed is numerically

displayed.

02/05

[MO] 11:30A

ENG SPEED

RPM

1950

ARO0160L

Figure 39

2.

BATTERY VOLTAGE

The battery voltage is numerically

displayed. With the engine running, the

02/05

[MO] 11:30A

reading should be between 26V - 30V.

When the starter is engaged or the

BATTERY

preheat system is being used, the voltage

can temporarily drop below 24V, but this is

a normal condition.

28.5

VOLT

ARO0180L

Figure 40

2-20 Operating Controls

022-00031E Operation and Maintenance Manual

3.

FRONT HYDRAULIC PUMP PRESSURE

The front pump pressure is numerically

displayed.

02/05

[MO] 11:30A

NOTE: This pump is closest to engine

flywheel housing or is the upper

FRONT PUMP

one of hydraulic pump.

It displays the reading in BARs.

320

BAR

ARO0190L

Figure 41

4.

REAR HYDRAULIC PUMP PRESSURE

The rear pump pressure is numerically

displayed.

02/05

[MO] 11:30A

NOTE: This pump is the farthest from

engine flywheel housing or is

REAR PUMP

the lower one of hydraulic

pump.

It displays the reading in BARs.

313

BAR

ARO0200L

Figure 42

022-00031E Operation and Maintenance Manual

Operating Controls 2-21

5.

ABNORMAL STATE WARNING OF FILTERS

NOTE: See Figure 43 thru Figure 45.

This display indicates abnormal state of filters.

Air Cleaner Filter and Return Filter and Pilot Filter.

If the abnormal state of filter is simultaneously produced more than two, the warning screen will

appear "Air Cleaner Filter," "Return Filter" and "Pilot Filter" according to order and each warning

screen returns after 3 seconds.

A.

Air Cleaner Clogged Warning

This screen indicates when the air

cleaner is clogged. When this screen

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[MO] 11:30A

appears, the air cleaner symbol on

the screen will start to blink.

2059 RPM

If

this

screen is displayed,

immediately stop operation and

Air Cleaner

replace or clean the air filter element.

After the air filter has been serviced,

CLOGGED!!

the engine speed and a symbol of

communicative state will

be

ARO0210L

displayed again.

Figure 43

B.

Return Filter Clogged Warning

(Optional)

This screen indicates when the

02/05

[MO] 11:30A

return filter clogged. When this

screen appears, the return filter

2059 RPM

symbol on the screen will start to

blink.

Return Filter

If

this

screen is displayed,

immediately stop operation and

CLOGGED!!

replace the return filter element.

After the return filter has been

ARO0230L

serviced, the engine speed and a

Figure 44

symbol of communicative state will

be displayed again.

C.

Pilot

Filter

Clogged Warning

(Optional)

This screen indicates when the pilot

02/05

[MO] 11:30A

filter clogged. When this screen

appears, the pilot filter symbol on the

screen will start to blink.

2059 RPM

If

this

screen is displayed,

Pilot Filter

immediately stop operation and

replace the pilot filter element.

CLOGGED!!

After the pilot filter has been

serviced, the engine speed and a

ARO0240L

symbol of communicative state will

Figure 45

be displayed again.

2-22 Operating Controls

022-00031E Operation and Maintenance Manual

MODE SELECTION BUTTONS

1

2

3

4

ARO0250L

Figure 46

1.

POWER MODE SELECTION BUTTON

3.

AUTO IDLE SELECTION BUTTON

2.

WORK MODE SELECTION BUTTON

4.

DISPLAY SELECTION BUTTON

1.

POWER MODE SELECTION BUTTON

This power mode is suitable for heavy-duty

work that requires a high operating speed.

Push this button to turn power mode "ON"

or "OFF."

When the power mode button is pushed to

the "ON" position, an indicator light above

it turns "ON."

When the power mode button is pushed

again, it is turned "OFF" and the power

mode is deactivated and returns to the

ARO0260L

standard operating mode.

Figure 47

When you turn the engine starter switch to

the "I" (ON) position, the power mode is

automatically defaulted to "Standard

Mode".

NOTE: When setting the main menu,

this button is used to function

as the change (UP:

) button.

For further details, see "Mode

Selection."

022-00031E Operation and Maintenance Manual

Operating Controls 2-23

2.

WORK MODE SELECTION BUTTON

The work mode selection button is used to

control wether the excavator is operated in

"Digging Mode" or "Trenching Mode."

When the work mode button is pushed to

the "ON" position, an indicator light above

it turns "ON," and "Trenching Mode" is

activated. This mode is suitable for a

smooth trench or smooth trench wall.

When the work mode button is pushed

ARO0270L

again, it is turned "OFF" and the trenching

mode is deactivated and the excavator

Figure 48

returns to the "Digging Mode."

NOTE: When you turn the engine

starter switch to the "I"

(ON)

position, the work mode is

automatically

defaulted

to

"Digging Mode."

NOTE: When setting the main menu,

this button is used to function

as the change

(DOWN:

)

button. For further details, see

"Mode Selection."

3.

AUTO IDLE SELECTION BUTTON

When the auto idle system is activated, the

engine will automatically reduce speed to

"IDLE" approximately 4 seconds after all of

the control levers are in the neutral

position. This system is designed to

reduce fuel consumption and noise.

When the auto idle selection button is

pushed to the "ON" position, an indicator

light above it turns "ON."

ARO0280L

When the auto idle selection button is

pushed again, it is turned "OFF" and the

Figure 49

engine speed will return to the setting of

the engine speed dial and will remain at

this speed despite control lever position,

until the engine speed dial is moved.

NOTE: When setting the main menu,

this button is used to function

as the select

(ENTER:

)

button. For further details, see

"Mode Selection."

2-24 Operating Controls

022-00031E Operation and Maintenance Manual

SETTING METHOD FOR MAIN MENU

By the combination of the mode selection buttons, you can check the setting contents of language, time

and filter/oil information. If necessary, you can set some information.

1

2

3

4

ARO0250L

Figure 51

•

Up Arrow Button (

, 1 on Figure 51): Used to move a menu item to "Up" or "Left" direction.

•

Down Arrow Button (

,

2 on Figure 51): Used to move a menu item to "Down" or "Right"

direction.

•

Enter Button (

, 3 on Figure 51): Used to set a menu or clear the operating hour of filter/oil.

•

Menu / Exit Button (ESC, 4 on Figure 51): Used to access to main menu or return to previous

screen from each sub-menu.

MAIN MENU

When the "ESC" button is pressed for more than

3 seconds, the main menu screen is displayed.

MAIN MENU

Three main menu items will be displayed. They

are;

Language

1

1.

“Language” on page 2-27.

2.

“Set Clock” on page 2-27.

Set Clock

3.

“Filter / Oil Info” on page 2-28.

Filter / Oil Info

The screen will return from the main menu to

the normal display, by again pressing the ESC

ARO0330L

button for more than 1 second.

Figure 52

If more than 20 seconds are spent in any menu,

without changing the screen, it will return to the

normal display.

The menu selection can be changed by pressing the "UP" (

) or "DOWN" (

) buttons. The selected

menu item will be highlighted, and a cursor will appear by the menu item.

When the selected menu item is highlighted, press the "ENTER" (

) button to enter the next submenu.

2-26 Operating Controls

022-00031E Operation and Maintenance Manual

LANGUAGE

When the cursor is on language setting, press

the "ENTER"

(

) button and then the

LANGUAGE

language setting submenu will appear.

The desired language can be selected by using

Francais

the "UP" (

) or "DOWN"(

) buttons.

Deutsch

4

The display can be set for the desired language.

Press the "ENTER"

(

) button to set the

Set :

English

selected language.

ARO0340L

If more than 20 seconds are spent in the menu,

Figure 53

without changing the screen, it will return to the

normal display.

SET CLOCK

When the cursor is on "Set Clock," press the

"ENTER" (

) button and then the clock setting

SET CLOCK

submenu will appear.

If more than 20 seconds are spent in the menu,

02 : 30 P

without changing the screen, it will return to the

normal display.

2001 02 / 15

:+

:

:MOVE

Setting Method

1.

Move the cursor to desired part by using

ARO0380L

the "ENTER" (

) button.

Figure 54

2.

Set the time by using the button "UP" (

)

or "DOWN"(

).

3.

+ (

), - (

): Increase or decrease of figure.

4.

MOVE (

): Confirm and move the cursor to next part.

5.

ESC: Move to the main menu by pressing for more than 1 second.

'00' Minute Setting

1.

Simultaneously press the "ENTER"(

) button and "UP" (

) button.

2.

If the displayed time is 30 minutes or less, the clock will display the preceding hour.

3.

If the displayed time is more than 30 minutes, the clock will display the succeeding hour.

4.

When the preceding hour is more than 23, the day will be increased.

022-00031E Operation and Maintenance Manual

Operating Controls 2-27

FILTER / OIL INFO

When the cursor is on the filter and oil

information, press the "ENTER"

(

) button

MAIN MENU

and then the filter and oil information submenu

will appear.

Language

Set Clock

Filter / Oil Info

3

ARO0390L

Figure 55

Each mode can be changed by pressing the

"UP" (

) or "DOWN" (

) buttons. This screen

indicates operating hour (Hrs) of filters and oils.

1.Fuel Filter

Hrs: 0232 Reset:

ARO0400L

Figure 56

Menu Display Order and Icon Explanation

1

2

3

4

5

6

7

8

1. Fuel Filter

2. Air Cleaner

3. Engine Oil Filter

4. Return Filter

8.

Coolant Water

7.

Hydraulic Oil

6.

Engine Oil

5. Pilot Filter

ARO0410L

Figure 57

2-28 Operating Controls

022-00031E Operation and Maintenance Manual

Filter / Oils Operating Hour Reset

After changing a filter or oil, reset the operating

hour to zero (Hrs: 0000). The next replacement

period can than be easily checked. The

operating hours are only accumulated while the

engine is running.

On the filter and oil information screen, press

1.Fuel Filter

the "ENTER" (

) button and then the reset

screen will be displayed.

Hrs: 0232 Reset:

ARO0400L

Figure 58

On the reset screen, the operating hour can be

changed to zero hour (Hrs: 0000) by pressing

the "ENTER" (

).

1.Fuel Filter

If the "ENTER" (

) button is pressed, the reset

will be completed. At the same time, the screen

will be returned to a previous menu.

RESET?

If the "ESC" button is selected, the screen will

YES:

NO:ESC

be returned to a previous menu without

resetting.

Hrs: 0232 Reset:

The screen is moved to previous menu by

ARO0490L

pressing the "ESC" button.

Figure 59

If more than 20 seconds are spent in the menu,

without changing the screen, it will return to the

normal display.

022-00031E Operation and Maintenance Manual

Operating Controls 2-29

HEATER AND AIR CONDITIONER CONTROL PANEL

LOCATION OF CONTROLS AND VENTS

ARO0550L

Figure 60

The heater and air-conditioner are combined into one unit in the rear cover behind the operator's seat. If

necessary, the operator can control inner temperature using the operation panel installed in the right hand

control stand.

2-30 Operating Controls

022-00031E Operation and Maintenance Manual

OPERATION PANEL

LED

1

4

5

2

3

ARO0500L

Figure 61

1.

FAN AND AIR-CONDITIONER SWITCH

4.

AIR OUTLET SELECTION SWITCH

2.

FAN SPEED SELECTION SWITCHES

5.

AIR INLET SELECTION SWITCH

3.

TEMPERATURE CONTROL SWITCH

When a switch is selected, the LED indicator for the switch will turn "ON" to indicate that the switch is

functioning and give an activation sound.

When the light switch is turned to "I" or "II" position, the LED for illumination in the control panel will

turn "ON."

1.

FAN AND AIR-CONDITIONER SWITCH

A. "OFF" Switch - This switch is used to

control the heater and air conditioner

off function by the fan stop.

B. "A/C" Switch - This switch is used to

control the air conditioner ON/OFF. If

you do not select a fan speed, the air

conditioner will not work. When the

air conditioner starts to work, the

LED indicator will turn "ON."

ARO0510L

Figure 62

022-00031E Operation and Maintenance Manual

Operating Controls 2-31

2.

FAN SPEED SELECTION SWITCHES

These switches are used to control the

speed of the blower fan.

A. "LO" Switch - Used for low speed.

B. "MID" Switch - Used for intermediate

speed

C. "HI" Switch - Used for high speed.

NOTE: If you do not select a blower

speed the heater and air

conditioner will not work.

ARO0520L

Figure 63

3.

TEMPERATURE CONTROL SWITCH

The temperature control consists of

24

stages. A LED is turned "ON" for every

three stages. Whenever pushing it, it

changes in stages. Pushing it continuously,

it changes continuously.

A. "COOL" Switch

-

Lowers the

temperature.

B. "WARM" Switch

-

Raises the

temperature.

ARO0530L

LED COLOR STATUS

Figure 64

Green LED - Air conditioner. Full

green, maximum operation of

air-conditioner.

Red LED

- Heater. Full red,

maximum operation of heater.

When the unit is used only for air conditioning, push the "A/C" switch and make all the LEDs fully

green by pressing the "COOL" switch.

When the unit is used only for heat, make the LEDs fully red by pressing the "WARM" switch. The

"A⁄ C" switch has to be turned "OFF."

To set the desired temperature of air coming out of the air outlets, turn the "A/C" switch "ON" and

combine red LEDs with green LEDs by pressing the temperature selection switch. The more LEDs in

the green range that turn "ON," the cooler the temperature will become. The more LEDs in the red

range that turn "ON," the warmer the temperature will become.

2-32 Operating Controls

022-00031E Operation and Maintenance Manual

4.

AIR OUTLET SELECTION SWITCH

This switches are used to select the

position of each air outlet.

ARO0540L

Figure 65

A. Used to direct air flow to upper

portion of operator’s cab from both

the front and rear. It will also direct air

to the front window and feet.

The defroster nozzle can be

manually opened or closed. If

necessary, the operator can close

this nozzle to enhance the cooling

capacity to the upper portion of the

cab in the direction of his face.

ARO0570L

Figure 66

B. Used to direct air flow to lower

portion of operator’s cab and feet.

This mode is mainly used for heating.

ARO0580L

Figure 67

C. Used to direct air flow to upper

portion of operator and front window.

The face nozzle on the instrument

panel can be manually opened or

closed. If this nozzle is closed, the

defrosting effect will enhance. If

necessary, the operator can close the

defroster nozzle to enhance cooling

capacity in the direction of his face.

ARO0590L

Figure 68

022-00031E Operation and Maintenance Manual

Operating Controls 2-33

5.

VENTILATION SELECTION SWITCH

A. "A" Switch

- Draws fresh air into

A

B

operator’s compartment. Used to

remove condensation or ice on

windows (Winter / Rainy season).

B. "B" Switch - Recirculates air within

the operator’s compartment. Used to

quickly warm or cool the operator’s

cab.

MEMORY FUNCTION OF USED MODE

ARO0560L

Figure 69

The air conditioner panel has a memory

function. When the starter switch is turned

"OFF" the settings for the panel will be stored.

When the excavator is started, the last setting

will be used.

ADDITIONAL OPERATING INSTRUCTIONS

A proper indoor temperature in summer is 5 - 6°C (10 - 12°F) less than the outdoor temperature.

Operate the air conditioner from 20 - 30 minutes a week to circulate the refrigerant in the system.

NOTE: The blower switch should be on "LO" speed.

Clean filter every 500 hours or when required due to operating conditions. Replace filter when required.

If operating the air conditioner or heater for a long time, operate the ventilation switch, and when smoking,

vent the air to the outside to prevent irritation to eyes.

2-34 Operating Controls

022-00031E Operation and Maintenance Manual

FRONT PANEL

3

11

8

7

9

5

10

EJECT

PROGRAM

AM/FM

SCAN

PS/AS

SOUND

N

1

2 RPT

3

VOL BAS TRE FAD BAL

MTL

ST

SCAN

FM1

AMFM2

AST

4

5

6

1

2

4

12

6

ARO0600L

Figure 70

1.

POWER / VOLUME CONTROL KNOB

7.

CASSETTE SLOT

2.

SOUND MODE SELECTION KNOB

8.

TAPE EJECT BUTTON

3.

BAND SELECTION SWITCH

9.

CASSETTE AND PROGRAM BUTTON

4.

TURNING UP / DOWN

10.

SECURITY WARNING LED

5.

AUTOMATIC MEMORY (AME) AND

11.

SCAN

PRESET SCAN BUTTON

12.

LCD

6.

PRESET STATION BUTTON

1.

POWER/VOLUME CONTROL KNOB

Power ON: Press this knob to turn the audio system "ON."

Power OFF: Press the knob again to turn the audio system "OFF." All displays will disappear on the

LCD.

When control button is rotated clockwise (counterclockwise) during normal operation, the volume is

increased (decreased), the volume level will appear as a numeric value on the LCD. After adjusting,

the LCD will return to its original condition 5 seconds later.

NOTE: Audio system will be operated at the mode which you operated before turning off the audio

system.

2.

SOUND MODE SELECTION BUTTON

To select the desired audio mode, press the sound mode selector button. The audio mode indicator

and numeric value will appear on the LCD.

Each time you press the button, the sound mode changes in the following order:

VOL -> BAS -> TRE -> FAD -> BAL.

When the desired mode is selected, adjust the volume by rotating power / volume control knob (1).

2-36 Operating Controls

022-00031E Operation and Maintenance Manual

12. LCD

A. Tape Direction Indicator

M L K J I

H

G

B. FM/AM Band Indicator

C. FM Stereo On Indicator

VOL BAS TRE FAD BAL

MTL

F

ST

SCAN

D. Frequency

/ Tape Signal

/ Audio

FM1

Level Condition Indicator

AST

AMFM2

E

E. Auto Memory Indicator

F.

Metal Tape Indicator

A B C D

G. Preset Number Indicator

ARO0660L

Figure 71

H. Weak FM Station Indicator

I.

Balance Indicator

J.

Fader Indicator

K. Treble Indicator

L.

Bass Indicator

M. Volume Indicator

CARE OF STEREO

Do not use a tape that has a longer playing time

than C-90 (90 minutes). Avoid use of C-120

tapes because tapes are made of a thinner

material that may break and get tangled inside

stereo.

Figure 72

Make sure tapes are wound tight. If you use a

loose tape, it may cause a problem in a deck. If

they are loose, use a pencil or similar device to

wind up slack.

Do not use poor quality tapes.

Figure 73

2-40 Operating Controls

022-00031E Operation and Maintenance Manual

Do not store cassette tapes in the following

places or under the following conditions.

Damage to tape and stereo may result.

•

Direct sunlight.

•

Humid place.

•

Dusty place.

•

Around heater or heater vents which

discharge heat.

•

Around speakers and other magnet

HIB2001I

devices that generate a strong

magnetic field (solenoid valves).

Figure 74

Clean head and pinch roller periodically. They

continuously contact the tape. If they are not

kept clean, stereo and tapes may be damaged.

Keep them clean for optimum performance.

Figure 75

If head gets dirty, clean it with a soft cotton swap

through cassette slot.

It is recommended t0 use a cassette deck

cleaning tape for easy and efficient cleaning of

head, capstan and pinch roller.

When you turn "OFF" power, be sure to take out

cassette tape by pressing eject button.

When not using a cassette tape, keep it stored

in a plastic case.

Figure 76

022-00031E Operation and Maintenance Manual

Operating Controls 2-41

FUSE BOXES

There are two fuse boxes (1 and 2, Figure 77)

on the left side of the heater box. The fuses

prevent electrical devices from overloading or

shorting.

A decal attached to the inside of the fuse box's

cover indicates the function and amperage of

1

each fuse.

NOTE: For a further explanation see

“Fuse Boxes” on page 4-57.

2

Spare fuses are mounted on the inside of fuse

box's cover.

Change a fuse if the element separates. If the

element of a new fuse separates, check the

circuit and repair the circuit.

ARO0620L

CAUTION!

Figure 77

Always replace fuses with the same type

and capacity fuse that was removed.

Otherwise, electrical damage could result.

2-42 Operating Controls

022-00031E Operation and Maintenance Manual

MISCELLANEOUS ELECTRICAL DEVICES

1.

CAB LIGHT

A light is installed on the rear right of the

operator’s compartment.

Press the push button to turn it "ON."

Press the button again to turn it "OFF." The

light will work despite starter switch

position.

NOTE: If light is left "ON" for a long

time while the engine is not

running, the battery will be

discharged.

HAOB060L

Figure 78

2.

PILOT CUTOFF SWITCH

The pilot cutoff switch is by the hinge part

of left hand stand. When the safety lever is

raised, the switch deactivates the work and

travel levers. With the work and travel

levers deactivated no digging/operational

work can be done.

ARO0650L

Figure 79

3.

CIRCUIT BREAKER

A main circuit breaker is in the battery box.

It will automatically cut off in the event of

an electrical circuit short or overload. This

will prevent the electric wiring and

components from being burned or

damaged.

If the circuit breaker is cut off, check all

related circuits, this means something is

wrong in the electric circuit.

After maintenance, press the red button for

HAOB090L

normal operation of circuit breaker.

Figure 80

022-00031E Operation and Maintenance Manual

Operating Controls 2-43

4.

FUSIBLE LINK

A fusible link is in the battery box.

If the engine does not crank, first check

A

that the starter switch is turned "ON" and

that no power is available (No indicator

lights will light.). Check that the "A" portion

(Figure 81) of the fusible link is not broken

or burned through. Replace the fusible link

if damage and investigate cause.

HAOB100L

Figure 81

2-44 Operating Controls

022-00031E Operation and Maintenance Manual

SEAT ADJUSTMENT

WARNING!

Whenever the operator or operating

condition has changed, check to see that

the seating position is suitable for the

condition at hand. Always fasten your seat

belt while operating vehicle. Adjust the

backrest so that the operator can fully

reach and operate the pedals. When

setting the safety lever to the "LOCK"

ARO0690L

position, first make sure the left arm rest

Figure 82

is completely raised to the upright

position.

1.

FORWARD / BACKWARD

ADJUSTMENT (FIGURE 83)

2

Holding lever (1, Figure 83), raise it up,

while pushing or pulling the seat to desired

position. Release lever once desired

4

position is reached. Adjustment range is

160 mm (6.3 in)

3

2.

ADJUSTING THE SEAT'S TILT AND

5

SEAT HEIGHT (FIGURE 83)

1

ARO0700L

Forward Tilt

Figure 83

Push lever (2, Figure 83) down to adjust

the angle of the front of the seat.

Rear Tilt

Pull lever (2, Figure 83) up to adjust the angle of the rear of the seat.

Seat Height

It is possible to move the seat up or down by combining adjustments forward and rear tilt. Adjust the

seat according to operator’s size and work conditions. Height adjustment is 60 mm (2.4 in).

3.

WEIGHT ADJUSTMENT (FIGURE 83)

Turning knob (3, Figure 83) to right makes the suspension harder. Turning knob to left makes the

suspension softer. Adjust according to operator’s weight by checking the weight indicator dial.

Adjustment range is from 50 - 120 kg (110 - 265 lb).

4.

ADJUSTING RECLINING (FIGURE 83)

Pulling up the right lever (4,Figure 83) allows the seat backrest to be moved forward or backward.

022-00031E Operation and Maintenance Manual

Operating Controls 2-45

5.

MOVING THE TOTAL SEAT SETTING FORWARD/BACKWARD (FIGURE 83)

Turning lever to right allows the whole seat (seat, operation lever, safety lever) to be moved forward

and backward. Adjustment range is 140 mm (5.51 in).

6.

ANGLE ADJUSTMENT OF ARMREST

(FIGURE 84)

Adjustment angle of left and right armrest

is done by turning a dial (6, Figure 84) in

bottom of armrest. When you adjust the

angle, manually raise the armrest before

turning the dial.

7.

HEADREST (FIGURE 84)

The headrest

(7, Figure

84) can be

adjusted forward/backward and up/down.

HAOB130L

Move it by holding both sides.

Figure 84

2-46 Operating Controls

022-00031E Operation and Maintenance Manual

SEAT BELT

WARNING!

The seat belt is for the operator's safety and should be worn at all times. Before driving the

machine, adjust the seat to the desired position for maximum comfort and machine control, then

fasten the seat belt. Seat belts must be worn across the pelvic region and adjusted snugly to

lessen the chance and severity of injury in the event of an accident. Never fasten a seat belt

across the abdomen.

Under no circumstances should the operator be standing in the cab when operating the

excavator.

Do not adjust the seat position while the vehicle is moving because a loss of control may result.

Stop the machine, apply the parking brake, and then adjust the seat.

Always, check the condition of seat belt and belt bracket before fastening it. Do not use it with

twists in it. Replace belt or bracket if damaged or worn.

SEAT BELT LOCKING AND UNLOCKING

Insert belt end (1, Figure 85) into the buckle (2).

Pull the belt to check that belt end is locked into

buckle.

Adjust belt length so that it comfortably tight

against the operator’s pelvic region (hipbone).

HAOB140L

Figure 85

Press the button (3, Figure 86) in the center of

buckle (2) and pull out belt (1) to unlock.

HAOB150L

Figure 86

022-00031E Operation and Maintenance Manual

Operating Controls 2-47

CEILING COVER

WARNING!

When leaving operator's seat, set the

safety lever to "LOCK"

(Figure

87)

position, if not a serious accident could

occur by accidentally moving the work

levers.

HAOA390L

Figure 87

OPENING THE CEILING COVER

1.

Lower bucket to ground.

2.

Set safety lever (Figure 87) on "LOCK."

3.

Pull the lock (1, Figure 88) in front center

of ceiling cover and push it up with handle

(2).

CLOSING THE CEILING COVER

1.

Lower bucket to ground.

HAOB160L

2.

Set safety lever (Figure 87) on "LOCK."

Figure 88

3.

Pull down cover with the handle (2, Figure

88) so that the lock (1) can be locked in the

bracket in the ceiling frame.

2-48 Operating Controls

022-00031E Operation and Maintenance Manual

FRONT WINDOWS

WARNING!

When leaving operator's seat, set the

safety lever to "LOCK"

(Figure

89)

position, if not a serious accident could

occur by accidentally moving the work

levers.

FRONT UPPER WINDOW

HAOA390L

This can be housed in the cab's ceiling

Figure 89

Opening the Window

WARNING!

When stowing front window in the cab

roof, secure left lock lever (1, Figure 90) so

they do not fall out.

1.

Lower bucket to ground.

1

2.

Set safety lever (Figure 89) on "LOCK."

ARO0771L

3.

Set engine speed control dial to

“LOW

Figure 90

IDLE." Allow engine to idle for

3

-

5

minutes.

4.

Shut down engine by turning key to "O"

(OFF) position and remove key from

starter switch.

5.

Unplug wiper connector (1, Figure 91) on

right front upper side of cab.

1

ARO0790L

Figure 91

022-00031E Operation and Maintenance Manual

Operating Controls 2-49

6.

Push release levers (1, Figure 92) on both

sides of front window. This will allow front

window to move.

1

ARO0780L

Figure 92

7.

Holding window handles (one at top and

the other at bottom of window) pull window

up and then push it back. Make sure

window is secured with latch (1, Figure

93).

1

HAOB200L

Figure 93

8.

Pull lock lever (1, Figure 94) down until pin

on lever goes into the hole of cab.

1

ARO0771L

Figure 94

2-50 Operating Controls

022-00031E Operation and Maintenance Manual

Closing the Window

WARNING!

Be careful that your hands are not caught

in window frame.

1.

Lower bucket to ground.

2.

Set safety lever (Figure 89) on "LOCK."

1

ARO0770L

3.

Unlock it pulling the lever (1, Figure 95) up

(in direction of allow).

Figure 95

4.

Holding upper handle of front window with

right hand, push release lever (1, Figure

2

96) (in direction of arrow) to unlock catch

(2).

5.

Slowly lower front window into position.

1

HAOB220L

Figure 96

6.

Push front window to secure front window

by lock catches (1, Figure 97).

7.

Plug in wiper connector (1, Figure 91) on

right front upper side of cab.

1

1

ARO0760L

Figure 97

FRONT BOTTOM WINDOW

The front bottom window can be removed and

stored to cabin rear.

1.

After stowing the front upper window in the

cab roof, remove bottom window from cab

in direction of the arrow (Figure 98).

ARO0730L

Figure 98

022-00031E Operation and Maintenance Manual

Operating Controls 2-51

2.

Set bottom window in rubber holders (1,

Figure 99) behind operator's seat. Secure

window to cab with left and right knobs (2).

2

1

ARO0740L

Figure 99

DOOR SIDE LATCH

1.

The door side latch (1, Figure 100) is used

to secured the door to the side of the cab

when it is opened.

NOTE: Keep the door closed and

locked when machine is not in

use.

HAOB240L

Figure 100

2.

To release door from side of cab, push the

latch lever (Figure 101) down. The latch

lever is to the left of the operator’s seat.

HAOB250L

Figure 101

2-52 Operating Controls

022-00031E Operation and Maintenance Manual

MISCELLANEOUS ACCESS COVERS AND DOORS

SIDE DOOR

Pull out prop rod (1, Figure 102) from housed

position and insert it into hole (2) to secure side

access door.

Figure 102

BATTERY BOX DOOR

Open door and slide prop rod (1, Figure 103) in

slot (2) until it locks in notch at end of slot.

Figure 103

ENGINE COVER

Open the cover and slide prop rod (1, Figure

104) in the slot (2) to support the cover.

Figure 104

022-00031E Operation and Maintenance Manual

Operating Controls 2-53

CAB STORAGE

1

COMPARTMENTS

Two storage compartments are behind the

2

operator’s seat.

The large compartment (1, Figure 105) has a

cover. Keep the operation and maintenance

manual in it so it can be referred to when

operating the machine or performing

maintenance.

ARO0750L

Keep small objects such as cassette tapes, etc.

Figure 105

in the small personal box (2, Figure 105).

There is a separate case (1, Figure 106) which

is on the right side of operator's seat.

1

ARO0710L

Figure 106

ASHTRAY

An ashtray (1, Figure 107) is to the right side of

the operator’s seat on the side of the cab.

Pressing end of ashtray will revolve it open.

Always close ashtray after putting out a

cigarette.

1

ARO0720L

Figure 107

2-54 Operating Controls

022-00031E Operation and Maintenance Manual

EMERGENCY GLASS

BREAKING TOOL

This excavator is equipped with a glass breaking

tool. It is behind the operator seat in the upper

right corner of the cab. This tool can be used in

case of an emergency situation which requires

the breaking of glass to exit from the operator’s

cabin. Grip the handle firmly and use the sharp

point to break the glass.

Figure 108

WARNING!

Protect your eyes when breaking the

glass.

022-00031E Operation and Maintenance Manual

Operating Controls 2-55

STARTING AND STOPPING THE ENGINE

INSPECTION BEFORE STARTING ENGINE

WARNING!

If a flammable materials such as leaves, paper, etc. are allowed to accumulate on high

temperature components, such as the engine muffler and turbo, a fire may occur. Fuel, lubricant

and hydraulic oil leaks, may cause a fire. If there is anything wrong, perform the appropriate

corrective action.

Before starting engine, inspect the following items;

1.

Electric system - Check for damaged electric cables, and loose or missing connectors.

2.

Fuel system - Drain water and sediment from fuel tank and water separator.

3.

Hydraulic system - Check for hydraulic oil leaks, damaged tubing and hoses, and interference points

of components.

4.

Lubrication - Perform all daily and periodic maintenance services. Perform services according to

reading shown on hour meter.

5.

Safety - Perform a machine walk-around. Make sure that no one is under the machine or performing

any maintenance on it, before starting engine.

6.

After starting machine - Check that all operational controls and components, are in proper operating

condition, and are functioning correctly. Stop operation and correct any malfunction before continuing

work.

OPERATIONAL CHECKS BEFORE

STARTING ENGINE

WARNING!

When leaving operator's seat, set the

safety lever to "LOCK" (Figure 1) position,

if not a serious accident could occur by

accidentally moving the travel or work

levers.

HAOA390L

1.

Set safety lever on "LOCK" (Figure 1).

Figure 1

2.

Fasten seat belt. Check for proper

operation and condition

3.

Set all operation levers in "NEUTRAL."

NOTE: Be careful not to touch any

switches when starting engine.

3-2 Operation

022-00031E Operation and Maintenance Manual

4.

Rotate the starter switch to the "I" (ON)

position

(Figure

2). Check all indicator

lights. After 2 seconds, all lights except the

following will turn "OFF."

•

Engine coolant temperature gauge

•

Charging warning light

•

Fuel gauge

•

Engine oil pressure warning light

•

Engine rpm (0 rpm)

HAOB320L

NOTE: If all of the indicator lights do

Figure 2

not come "ON" when the key is

first turned, there is a problem.

A warning buzzer will sound for about 2

seconds.

The sound of the engine control motor may

be heard while it rotates to the correct

starting position.

022-00031E Operation and Maintenance Manual

Operation 3-3

ENGINE START

WARNING!

Start the engine after sounding horn and making sure that there are no people or obstacles in

the area.

1.

Perform all steps in “Operational Checks

Before Starting Engine” on page 3-2.

2.

Set engine speed control dial slightly

above “LOW IDLE” (Figure 3).

3.

Sound horn.

HAOB34L

Figure 3

" "

4.

Turn starter switch to

(START)

position (Figure 4). Engine should start in

approximately 5 seconds.

WARNING!

If the engine does not start after

approximately

15

seconds of

cranking, release the starter switch.

Wait about

5 minutes and repeat

HAOB350L

above step.

Figure 4

5.

After engine has started, release key. Key

will return to "I" (ON) position (Figure 5).

6.

Follow procedures in “Hydraulic System

Warm-up” on page 3-10.

HAOB360L

Figure 5

3-4 Operation

022-00031E Operation and Maintenance Manual

7.

After warming unit, check all operating

indicators to make sure that all engine

systems (oil pressure, coolant, etc.) are in

the normal operating range. If any

problems are noticed, shut down engine.

Normal indicators are:

ARO0430L

Figure 6

INDICATOR

INSTRUMENT PANEL LIGHT OR GAUGE

READING

ENGINE COOLANT TEMPERATURE GAUGE

GREEN RANGE

FUEL GAUGE

GREEN RANGE

CHARGING WARNING LIGHT

OFF

ENGINE OIL PRESSURE WARNING LIGHT

OFF

PREHEATING COMPLETION LIGHT

OFF

PILOT FILTER CLOGGED WARNING LIGHT

OFF

RETURN FILTER CLOGGED WARNING LIGHT

OFF

AIR CLEANER FILTER CLOGGED WARNING LIGHT

OFF

8.

Check color of exhaust smoke.

•

No color or light blue - Engine is running in good condition.

•

Black - Incomplete combustion. Check cause.

•

White or dark blue - Engine is burning engine oil. Check cause.

9.

Check for usual engine vibration and noises. If any are heard or felt, investigate cause.

NOTE: If engine coolant temperature gauge shows red while running, take the following action;

Discontinue work and allow engine to run at low idle. Open engine compartment cover for

good ventilation. Once engine temperature gauge returns to the green zone, shut down

engine. After engine has cooled, check coolant level, look for leaks, clogged or dirty

radiator fins (radiator core), and fan belt tension.

022-00031E Operation and Maintenance Manual

Operation 3-5

COLD WEATHER STARTING

WARNING!

DO NOT USE STARTING FLUIDS. The preheat system could cause the starting fluid to explode.

Starting fluids should never be used.

1.

Perform all steps in "Operational Checks

Before Starting Engine."

2.

Set engine speed control dial slightly

above “LOW IDLE” (Figure 7).

3.

Sound horn.

HAOB34L

Figure 7

"

"

4.

Turn starter switch to

(PREHEAT)

position

(Figure

8). Hold it there for

19

seconds. When preheat cycle is

completed, the preheat completion light (1,

Figure 9) will turn "ON."

HAOC020L

Figure 8

1

ARO0420L

Figure 9

3-6 Operation

022-00031E Operation and Maintenance Manual

5.

After the preheat completion turns "ON,"

" "

immediately turn starter switch to

(START) position

(Figure

10). Engine

should start in approximately 5 seconds.

WARNING!

If the engine does not start after

approximately

15

seconds of

HAOB350L

cranking, release the starter switch.

Wait about

5 minutes and repeat

Figure 10

above step.

6.

After engine has started, release key. Key

will return to "I" (ON) position (Figure 11).

7.

After the engine starts, check all operating

indicators to make sure that all engine

systems (oil pressure, coolant, etc.) are in

the normal operating range. If any

problems are noticed, shut down engine.

8.

Follow "Hydraulic System Warm-up"

procedures in this section.

(See page

3-10)

HAOB360L

Figure 11

022-00031E Operation and Maintenance Manual

Operation 3-7

STARTING ENGINE WITH A BOOSTER

CABLE

WARNING!

1.

An explosive gas is produced while

batteries are in use or being charged.

Keep flames or sparks away from the

battery area.

2.

Charge batteries in a well-ventilated

HAOA440L

area.

Figure 12

3.

Always wear eye protection when

starting a machine with jumper

cables.

4.

Improper jump starting procedures

can cause an explosion resulting in

personal injury.

5.

Jump start vehicles on dry ground or

concrete. Do not jump start the

machine on a steel floor, because the

floor is always grounded.

6.

When starting from another machine,

make sure the machines do not

touch.

7.

Always connect the auxiliary battery

positive

(+) terminal too depleted

battery positive

(+) terminal first.

Then connect

auxiliary battery

negative (-) terminal to the frame of

the depleted battery machine

second.

8.

Connect positive cable first when

installing cables and disconnect the

negative cable first when removing.

IMPORTANT

The machine has a 24V (-) negative ground electrical system. Use the same capacity 24V booster

batteries when jump starting engine.

If the batteries are drained during starting procedures, jump start engine using auxiliary or booster

batteries according to the following procedure;

3-8 Operation

022-00031E Operation and Maintenance Manual

Connecting the Booster Batteries

1

1.

Shut down engine of the machine on

RED

which booster batteries are mounted.

2.

Connect one end of red cable (1, Figure

13) to the positive

(+) terminal of the

machine batteries, and the other end to

the positive

(+) terminal of the booster

batteries.

3

4

BLACK

3.

Connect one end of black cable (2, Figure

13) to the negative

(-) terminal of the

2

5

booster batteries, and then make ground

ARO0440L

connection to the upper frame of the

Figure 13

machine to be started with the other end of

black (-) cable (2, Figure 13). In the last

connection to upper frame, be sure to

connect the cable end as far away from the

machine batteries as possible. DO NOT

CONNECT DIRECTLY TO THE

NEGATIVE BATTERY TERMINAL.

4.

Start the engine.

Disconnecting the Booster Batteries

1.

Disconnect black negative

(-) cable

(2,

Figure 13) from the machine frame first.

2.

Disconnect the other end of black negative

(-) cable (1, Figure 13) from the booster

batteries.

3.

Disconnect red positive

(+) cable

(1,

Figure 13) from the booster batteries.

4.

Disconnect red positive

(+) cable

(1,

Figure 13) from the machine batteries.

022-00031E Operation and Maintenance Manual

Operation 3-9

HYDRAULIC SYSTEM WARM-UP

WARNING!

If a problem or abnormal operation occurs, immediately shut down engine. Allow excavator to

reach normal operating temperature before starting work, especially in cold weather.

The correct operating temperature of the hydraulic oil is 50° - 80°C (120° - 175°F). Make sure to follow the

procedures listed below for hydraulic fluid warm-up.

1.

Run engine for approximately 5 minutes

set at the middle of the speed range,

without a load.

HAOB410L

Figure 14

2.

Set safety lever

(1, Figure

15) on

"UNLOCK" position.

1

ARO0450L

Figure 15

3.

Slowly cycle boom, arm and bucket

cylinders about five times without a load to

circulate the oil through the system. Do

this for 5 minutes.

4.

Check for clearance and fully raise the

front attachment. Swing clockwise

3

revolutions. Swing counterclockwise

3

revolutions.

5.

Travel forward and reverse at low speed for

two revolutions of the drive sprocket.

ARO0470L

Figure 16

3-10 Operation

022-00031E Operation and Maintenance Manual

HYDRAULIC SYSTEM WARM-UP - COLD

WEATHER

1.

Run engine at “LOW IDLE” (no load) for 5

minutes (Figure 17).

HAOB290L

Figure 17

2.

Run engine for approximately 5 minutes

set at the middle of the speed range,

without a load (Figure 18).

HAOB410L

Figure 18

3.

Set safety lever

(1, Figure

19) on

"UNLOCK" position.

1

ARO0450L

Figure 19

4.

Slowly cycle boom, arm and bucket

cylinders about five times without a load to

circulate the oil through the system. Do

this for 5 minutes.

ARO0470L

Figure 20

022-00031E Operation and Maintenance Manual

Operation 3-11

5.

Set engine speed control dial to “HIGH

IDLE” (Figure 21).

6.

Repeat Step 4 for 5 minutes. If working

speeds continue to be slow, continue to

operate, but use extreme caution because

the machine function may be erratic.

7.

Check for clearance and fully raise the

front attachment. Slowly swing clockwise 3

revolutions. Slowly swing counterclockwise

3 revolutions.

8.

Travel forward and reverse at low speed for

HAOB550L

two revolutions of the drive sprocket.

Figure 21

ENGINE SHUT DOWN

NOTE: Allow engine to idle for 3 - 5

minutes before shutting down

the engine. If not allowed to

idle, heat surge may develop

which will damage the engine.

Allowing the engine to idle will

dissipate heat.

ARO0460L

Figure 22

1.

Park excavator on level and firm ground.

2.

Lower front end attachment to ground and

make sure all operating controls are in

"NEUTRAL."

HAOB920L

Figure 23

3-12 Operation

022-00031E Operation and Maintenance Manual

3.

Set safety lever on "LOCK" position by

pulling it up (Figure 24).

HAOA390L

Figure 24

4.

Set engine speed control dial to

“LOW

IDLE” (Figure 25). Allow engine to idle for

3 - 5 minutes.

HAOB290L

Figure 25

5.

Shut down engine by turning key to "O"

(OFF) position (Figure 26).

6.

Remove key from starter switch.

CHECK AND CONFIRMATION AFTER

STOPPING ENGINE

1.

Repair excavator, if there are any coolant

or oil leaks.

2.

Inspect front attachment and under

carriage for abnormal appearances.

HAOC340L

Correct any problems.

Figure 26

3.

Fill fuel tank.

4.

Get rid of any accumulated flammable

materials such as leaves and paper etc. in

engine compartment.

5.

Clean all mud, etc. from undercarriage and

tracks. Make sure that all steps and hand

holds are clean, and that the operator’s

compartment is clean.

022-00031E Operation and Maintenance Manual

Operation 3-13

SAFETY LEVER

WARNING!

When stopping engine or leaving the operator's seat, "LOCK" the safety lever, otherwise, a

serious accident may occur by accidental movement of travel and work levers.

Whenever leaving the operator’s seat, make sure the engine is shut down and the safety lever is

"LOCKED."

Be careful not to move the operation lever when raising up or pushing down the safety lever.

1.

Pull safety lever (Figure 27) up to allow left

hand control console to raise into the

"LOCKED" position. Make sure that the

safety lever is "LOCKED" into the raised

(up) position. When safety lever is in the

"LOCKED" position, the front attachment,

swing and travel movement will be

disabled even though a lever is moved.

NOTE: Lower bucket (front attachment)

to ground. Place all control

levers in "NEUTRAL" and shut

down engine.

HAOA390L

Figure 27

2.

Set safety lever

(1, Figure

28) on

"RELEASE/UNLOCK" position, by pushing

it down before starting work.

NOTE: When the engine is not running,

but the safety lever is

"RELEASED" and the starter

key is tuned "ON," moving the

work levers may result in

1

movement. The charged

accumulators in the system will

provide pilot pressure for

control valve spool movement.

ARO0450L

Figure 28

3-14 Operation

022-00031E Operation and Maintenance Manual

TRAVEL

WARNING!

1.

Before operating the travel levers, make sure that you know in which direction the machine

is pointing. Look at the end of the track assemblies. If the drive motors are visible while

sitting in the operator's seat, you are looking at the back end of the track assembly

(therefore, you are looking backwards). In this case, the response of the travel levers will be

the reverse of normal operation.

2.

Before moving, make sure that there are no personnel in the way or on the machine. Sound

the horn to alert workers that you are about to move the machine.

3.

Be sure the path is clear during travel.

4.

Use extreme caution when reversing travel. Be sure there is a clear path behind the

machine.

5.

Make sure to operate the travel control levers smoothly to avoid sudden starts or stops.

6.

Before leaving the operator's seat, make sure to lock out all control systems and shut down

the engine to avoid accidental activation.

AUTOMATIC TRAVEL SPEED CONTROL

WARNING!

Do not change the travel mode while traveling. Always use speed mode "O" when traveling down

a slope. It is very dangerous to change to speed modes indicated "I" or "II" while going down a

slope. Only change travel mode after coming to a complete stop.

Two travel speed ranges can be selected by

using the speed selection switch on the control

panel (Figure 29).

"O" (LOW) - In this position low travel speed and

a higher torque are selected.

O

"I"

(HIGH) - In this position high travel speed

I

and a lower torque are selected.

II

"II" (AUTOMATIC) - Setting the control at the "II"

position enables the machine to automatically

change to a different speed range. This change

happens automatically depending on the

ARO0030L

hydraulic oil pressure in the travel circuit. When

Figure 29

hydraulic oil pressure rises, the travel speed is

automatically set to low. An example is if the

machine is traveling on a flat, solid surface, the

higher speed range would be used. When a

slope is encountered, the speed drops and the

travel circuit hydraulic pressure rises, causing

the control circuit to shift to the higher torque,

lower speed range.

022-00031E Operation and Maintenance Manual

Operation 3-15

GENERAL TRAVEL INSTRUCTIONS

1.

Set engine speed control dial (Figure 30)

on desired speed.

HAOB550L

Figure 30

2.

Set safety lever on "UNLOCK" position

and folding the front, raise it up 40 - 50 cm

(16 - 20 in) above ground. See Figure 31.

HAOB500L

Figure 31

3.

As much as possible, travel on firm, level

ground. Avoid sudden movements and

sharp turns.

4.

When traveling on rough ground, travel at

a slow speed [1.0 - 1.5 km/hr (0.62 - 0.93

MPH)]. Reduced engine speed, to avoid

shock loading the equipment. Be careful

that an excessive force is not added to

equipment by touching or climbing on

rocks.

5.

On rough, frozen or uneven terrain, travel

slowly.

Figure 32

3-16 Operation

022-00031E Operation and Maintenance Manual

WARNING!

When traveling, keep bucket from 20 - 30

cm (8 - 12 in) above ground.

Do not travel backward on a slope.

Never turn or travel crosswise on a slope.

Choose a safe alternate route before

climbing a slope.

HAOB600L

If excavator starts to slip or becomes

Figure 33

unstable, lower the bucket immediately

into the ground, using it as a brake.

Avoid working on slopes, because there is

a danger of overturning by becoming

unbalance while swinging and performing

front attachment operations.

It is very dangerous to swing towards

bottom of slope with a loaded bucket.

In unavoidable cases level the slope with

fill soil, to make the vehicle as horizontal

as possible. See Figure 33.

Do not travel on slopes over 30° due to

turnover danger.

HAOB610L

HAOB620L

Figure 34

Figure 35

6.

Travel straight up or down slopes, never diagonally across the slope. See Figure 34 and Figure 35.

Extend the arm and lower the boom to keep the bucket about 20 - 30 cm (8 - 12 in) off the ground. If

the machine starts to slide or becomes unstable, lower the bucket to regain control. If the engine

stalls, lower the bucket, make sure that all controls are in the neutral position and restart the engine.

NOTE: Even though engine stops on a slope, do not operate swing control. The hydraulic

accumulators may cause the unit to swing.

NOTE: Do not open or close operator’s door on a slope. Make sure door is latched.

022-00031E Operation and Maintenance Manual

Operation 3-17

7.

If dirt or mud builds up in the track frame,

raise each track and rotate and clean that

track.

CAUTION!

When using the boom and arm to lift

any portion of the machine, roll the

bucket until the round base is

against the ground. The angle of the

arm to the boom should be at 90°.

Figure 36

Make sure that the material build-up has

been cleared. See Figure 36 and Figure

37.

8.

The excavator can travel in water that

comes up to the top of the upper carriage

rollers. Make sure that footing is solid so

that the machine will not sink. See

“Working in Water” on page 3-29.

NOTE: If the machine is submerged to

the point that water or mud gets

into the swing bearing or center

HAOB590L

joint, stop machine operation.

Figure 37

Remove the machine from the

submerged location to firm, dry

ground. Do not operate until

proper

inspection

and

maintenance

have

been

completed. Refer to the Shop

Manual or contact your

distributor.

TRAVEL CONTROL LEVER OPERATION

1.

To travel straight (Figure 38), push both

travel control levers/pedals fully forward or

backwards. The farther the levers/pedals

are pressed, the faster the travel speed.

NOTE: "X" is the sprocket end of the

track.

"X"

ARO0801L

Figure 38

3-18 Operation

022-00031E Operation and Maintenance Manual

2.

Pivot turns

(Figure

39) are made by

rotating only one track forward or

backward. The machine will pivot on the

non-moving track.

NOTE: "X" is the sprocket end of the

track.

"X"

ARO0801L

Figure 39

3.

Spin turns

(Figure

40) are made by

rotating one track forward and one track

backward. The machine will spin around

its center point, thus counter-rotating.

NOTE: "X" is the sprocket end of the

track.

"X"

ARO0802L

Figure 40

4.

Stopping travel

(Figure

41)

- Returning

travel levers to "NEUTRAL" position will

automatically apply brakes and stop

excavator.

NOTE: "X" is the sprocket end of the

track.

"X"

ARO0800L

Figure 41

022-00031E Operation and Maintenance Manual

Operation 3-19

OPERATING INSTRUCTIONS

ENGINE SPEED CONTROL

Engine speed can be manually adjusted using

the engine speed control dial, Increase engine

speed by rotating the control knob clockwise.

Decrease engine speed by rotating the control

knob counterclockwise.

IMPORTANT

The engine speed control system has

HAOA690L

been set at the factory and should not

Figure 42

require adjustment as part of routine

maintenance.

If the engine speed control system should have

an electrical malfunction, the engine throttle

system can be set for manual operation. Use the

following procedure;

IMPORTANT

If the engine rpm is being manually adjusted, the equipment will not function in its optimum

capacity. Please contact a DAEWOO distributor or service center for repairs.

1.

Park on firm, level ground.

2.

Lower bucket to ground.

3.

Set safety lever on "LOCK" position.

4.

Set engine speed control dial to

“LOW

IDLE." Allow engine to idle for

3

-

5

minutes.

5.

Shut down engine. Remove key from

starter switch.

6.

Attach tag, "DO NOT START" on right

hand work lever (joystick).

HAOB920L

Figure 43

7.

Disconnect control cable (1, Figure 44) by

removing nut and spring washer (2) and

loosening the nuts

(3) holding cable to

bracket.

8.

Remove nut and spring washer (5, Figure 44) from manual engine control cable (4) and loosen the

nuts (10) holding cable to bracket. Attach manual engine control cable ball joint to hole (6) by using

nut and spring washer (5) and attach it to slot (11) by tightening the nuts (10).

9.

Start the engine.

10. Display the engine rpm on the instrument panel by pressing the "DISPLAY" button.

3-20 Operation

022-00031E Operation and Maintenance Manual

11. On the rear of left control stand in cabin is a vernier caliper throttle control. The throttle control is a

push/pull and/or screw type assembly. The locking collar (7, Figure 44) at base of mechanism must

be turned to the released position before the throttle can be adjusted. Quick adjustment of engine

speed can be made by turning the locking collar to the "RELEASED" position and "DEPRESSING"

the button (9) (in center of knob (8)). Pulling the knob "OUT" increases rpm's, or pushing it "IN"

decreases rpm's. Fine adjustment of engine speed can be made by turning the knob. Turn knob

counterclockwise to increase engine speed and clockwise to decrease engine speed. Once the

desired rpm is obtained, turn the locking collar (7) to the locked position.

11

6

1

3

5

2

4

10

9

8

7

AYO0060L

Figure 44

022-00031E Operation and Maintenance Manual

Operation 3-21

MODE SELECTION

More efficient work can be done by choosing a proper power and work mode combination, suitable to type

of work and conditions. Use the mode selection according to following guide.

Power Mode

1.

When the starter switch is turned "ON" the

5

6

7

power mode is automatically defaulted to

the "Standard Mode."

2.

Select a proper power mode using buttons

(Figure 45) before starting work.

3.

When the power mode button (1, Figure

45) is pressed, a signal sounds, changing

1

2

3

4

the power mode to either "Power Mode" or

"Standard Mode." When the power mode

is turned "ON," the LED indicator

(5,

ARO0480L

Figure 45) turns "ON."

Figure 45

Deactivate the power mode by pressing it

a second time. When the power mode is

turned "OFF," the LED indicator (5, Figure

45) turns "OFF" and the power mode

returns to the standard mode.

Mode

Selection Point

General work.

STANDARD MODE

Minimize fuel consumption.

Required to heavy work in a short time.

POWER MODE

Fast speed loading.

Fast speed travel.

3-22 Operation

022-00031E Operation and Maintenance Manual

Work Mode

1.

When the starter switch is turned "ON" the

5

6

7

work mode is automatically defaulted to

the "Digging mode."

2.

Select the work mode using button

(2,

Figure 46) before starting work.

3.

When the work mode button (2, Figure 46)

is pressed, a signal sounds, changing the

1

2

3

4

work mode to either "Digging Mode" or

"Trenching Mode." When the trenching

mode is selected, the LED indicator (6,

ARO0480L

Figure 46) turns "ON." When the digging

Figure 46

mode is selected, the LED indicator (6,

Figure 46) turns "OFF."

4.

When the trenching mode is selected, the

control valve is set to optimum condition

for trenching work.

Mode

Selection Point

Future of Control

General excavation.

General standard.

Loading dump trucks.

DIGGING MODE

Lifting and transport of heavy objects.

Breaker.

Trenching.

The swing is faster and

TRENCHING

Excavating of side wall.

stronger than boom or

MODE

arm.

Required to constant swinging.

Auto Idle Mode

1.

The system will automatically reduce engine speed to idle speed approximately 4 seconds after all of

the control levers are in the neutral position. As soon as a pilot function is activated, engine speed is

automatically returned to the preselected range.

2.

When the starter switch is turned "ON," the work mode is automatically defaulted to "AUTO IDLE."

3.

When the LED indicator (7, Figure 46) is turned "ON," the auto idle function is activated. Deactivate

the auto idle function by again pressing the auto idle selection button (3, Figure 46). At this time the

LED indicator will be turned "OFF."

WARNING!

Turn "OFF' auto idle function when performing work in close operating area, i.e. work in a

narrow area and loading / unloading on or off a trailer.

022-00031E Operation and Maintenance Manual

Operation 3-23

Boost Mode

1.

Power boost switch is used to gain

maximum digging force.

2.

The power boost is activated while the

right side button is being pressed on top of

the right hand work lever (joystick).

NOTE: The power boost mode does

not affect forward and reverse

travel.

Do not use this switch for more

ARO0110L

than 10 seconds.

Figure 47 RIGHT HAND WORK LEVER (JOY-

STICK)

WORK LEVERS (ISO STYLE)

WARNING!

Check surrounding area before swinging. When operating a lever while in auto idle, do it

carefully, because the engine speed will increase rapidly.

NOTE: When starting work, move work levers slowly and check movement of swing and front

attachment.

This equipment is manufactured using the lever

configuration described in ISO standards. Do

not change valving, hoses, etc., that would

1

5

change this standard. The boom, arm and

bucket movements and swing direction of work

3

4

7

8

levers are as follows:

2

6

ARO0461L

Figure 48

Left Work Lever (Figure 48 and Figure 49)

1.

Arm dump

2.

Arm crowd

3.

Left swing

4.

Right swing

NOTE: The swing brake is spring

applied

and hydraulically

released. It is always engaged

when the work lever is in

"NEUTRAL" or the engine is

HAOB640L

shut down.

Figure 49

3-24 Operation

022-00031E Operation and Maintenance Manual

NOTE: The following is not a

mechanical malfunction but a

proper phenomenon of the

excavator. When operating the

arm, it may stop momentarily.

When the arm is operated, the

weight of the arm may cause it

to move faster than the amount

of oil being supplied.

HAOB820L

Figure 50

Right Work Lever (Figure 48 and Figure 51)

5.

Boom down

6.

Boom up

7.

Bucket crowd

8.

Bucket dump

NOTE: Even after stopping the engine,

the front can be lowered to the

ground by operating work lever

(joystick). Set safety lever on

"UNLOCK" position and turn

HAOB650L

starter switch "ON."

Figure 51

OPERATING PRECAUTIONS

WARNING!

DO NOT rest your feet on the travel pedals during normal machine operation. Unexpected

machine travel may occur in this situation.

1.

Before starting work, investigate terrain and soil condition. Level ground and drain area if necessary.

2.

Install window guards when working where

there is a possibility of falling rocks or

other objects.

Figure 52

022-00031E Operation and Maintenance Manual

Operation 3-25

3.

Check strength of supported structures in

advance before working on them. If

insufficient, reinforce it. If any doubt exists

about structural strength, refuse to operate

unit.

4.

It is possible that the boom, arm or bucket

may come into contact with the upper or

lower structure of the machine. There are

digging conditions which could allow this to

happen.

Figure 53

5.

DO NOT continually "bottom out" the

hydraulic cylinders. Machine damage may

occur if the cylinders are fully extended or

retracted, example: arm cylinder fully

retracted and the bucket cylinder is

extended to rotate the bucket into the

ground.

HAOB860L

Figure 54

6.

DO NOT use machine travel or swing

when the bucket is in the ground to provide

additional breakout force. See Figure 55.

HAOB850L

Figure 55

7.

DO NOT use machine weight to provide

additional breakout force. See Figure 56.

8.

When working on soft or muddy ground,

make sure that the machine is not sinking.

HAOB890L

Figure 56

3-26 Operation

022-00031E Operation and Maintenance Manual

9.

When working close to the excavated edge

make sure that the ground the machine is

sitting on is solid. Keep the travel motors to

the rear. See Figure 57.

TRAVEL MOTOR

ARO0970L

Figure 57

10. DO NOT excavate underneath the

machine. See Figure 58.

ARO0950L

Figure 58

11. Make sure that there is adequate

clearance from overhead electrical supply

lines. See Figure 59.

HAOA230L

Figure 59

12. If the excavation is in an underground

location or in a building, make sure that

there is adequate overhead clearance and

that there is adequate ventilation. See

Figure 60.

ARO0960L

Figure 60

022-00031E Operation and Maintenance Manual

Operation 3-27

13. DO NOT use the bucket as a hammer or

ramming device. This is dangerous and

causes damage to the front attachment.

See Figure 61.

HAOB870L

Figure 61

14. DO NOT dig with the excavator tracks

raised. This can result in structural and

mechanical failures.

HAOB880L

Figure 62

15. DO NOT operate travel lever quickly when

traveling in high range.

A. Avoid sudden starts.

B. When traveling in one direction come

to a complete stop before reversing

directions. Do not rock excavator

back and forth with levers.

C. Avoid sudden stops. Return levers to

neutral by hand. Do not let them

snap back to neutral on their own.

ARO0810L

16. If the optional long fronts or attachments or

Figure 63

heavy duty front end attachments are

used, the machine balance will be altered.

Follow

these

additional

operating

precautions.

3-28 Operation

022-00031E Operation and Maintenance Manual

WARNING!

DO NOT travel downhill with the front end attachments raised.

DO NOT travel across slopes; travel straight up or down slope.

Use extreme caution when swinging the upper frame when positioned on a slope.

Allow extra swing stopping room. The additional momentum generated by the longer or

heavier front end equipment will increase the amount of time needed to stop the swing

motion.

Make sure that all optional equipment has been authorized and installed properly.

17. DO NOT move dirt or objects by swinging the excavator into them. This can result in structural and

mechanical failures.

WORKING IN WATER

IMPORTANT

When working in water, do not exceed a

slope of more than 15°. If the slope is over

15°, the rear part of the upper structure

will be immersed in water, resulting in

radiator fan damage.

HAOB830L

Figure 64

When working in water, do not operate in water

over center of upper roller (1, Figure 65).

If swing bearing gets wet, immediately grease it

until all old grease is purged from bearing.

If water gets into swing gear housing, drain

water immediately by removing lower inspection

cover. Apply new grease.

After working in water, purge old grease on

bucket pins.

HAOB840L

Figure 65

022-00031E Operation and Maintenance Manual

Operation 3-29

PARKING EXCAVATOR

WARNING!

Park excavator on firm, level ground.

Avoid parking on slopes. If excavator must

be parked on a slope, block tracks and

place bucket teeth in ground. See Figure

66.

HAOB910L

Figure 66

1.

Park excavator on firm, level ground.

Lower bucket to ground as shown in Figure

67.

HAOB920L

Figure 67

2.

Set engine speed control dial on "LOW

IDLE."

HAOB290L

Figure 68

3-30 Operation

022-00031E Operation and Maintenance Manual

3.

If

you touch the operation lever

unintentionally, it may create a serious

accident. Before leaving operator's seat,

set safety lever on "LOCK" position.

HAOA390L

Figure 69

TOWING PROCEDURE

WARNING!

O

Never use a damaged wire rope or chain.

They could brake and cause a serious

accident.

Always wear gloves when handling a

chain or wire rope.

When towing excavator use a wire rope or

chain capable of handling the load.

Attach chain or wire rope to track frame as

shown in Figure 70.

X

Insert protective material such as thick

cloths between track frame and wirerope

to prevent the wire rope from being

damage.

HAOC910L

Figure 70

IMPORTANT

Use shackle hook on track frame to only haul objects that weigh less than 3 metric tons (3.31

U.S. Tons). Never use it to haul objects over 3 metric tons (3.31 U.S. Tons).

022-00031E Operation and Maintenance Manual

Operation 3-31

HYDRAULIC BREAKER

IMPORTANT

If a hydraulic breaker and piping is installed without DAEWOO's authorization, it may create a

serious malfunction which will not be covered under the excavator warranty.

SELECTION OF HYDRAULIC BREAKER

If a hydraulic breaker is installed, consider equipment's stability and suitability for such modification. Also

consider hydraulic oil pressure and quantity. When selecting a hydraulic breaker consult with a DAEWOO

distributor or sales agency.

HYDRAULIC HOSES AND TUBING FOR BREAKER

1.

When installing hydraulic breaker, assemble according to drawings provided with kit.

2.

If breaker is taken off excavator, be sure to plug and cap all hoses and tubing to prevent

contamination from entering hydraulic system.

3.

Plug and cap all connectors and fittings on breaker to prevent contamination.

4.

Check all hydraulic connections for signs of leaks or loose components before starting operation.

HYDRAULIC BREAKER OPERATION

NOTE: Hydraulic pressure and flow settings may need to be changed. Refer to the Maintenance

Section of this manual for further information.

1.

Make sure to read and understand the breaker user’s manual.

2.

Inspect all mechanical and hydraulic connections.

3.

DO NOT use the breaker as a hammer.

See Figure 71.

DO NOT drop breaker from extreme

heights.

The breaker is relatively heavy and drops

fast. Do not drop breaker from extreme

heights or damage to upper structure may

result

HAOB930L

Figure 71

3-32 Operation

022-00031E Operation and Maintenance Manual

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