Content      ..     2      3      4      5     ..

SANY Excavator SY335 (Part Number: 11282013). Safety, Operation & Maintenance Manual - page 4

SY335 Excavator

New Machine Run-In

NEW MACHINE RUN-IN

Your machine has been thoroughly adjusted and tested

before shipment. However, initial operation of the machine

under severe conditions can adversely affect the

performance of the machine or shorten the machine life.

Therefore, Sany recommends that you allow a run-in period

of 100 operating hours for a new machine.

Properly running-in a new machine is crucial for

guaranteeing a long service life of the machine by allowing

time for new cylinder piston rings and other internal engine

Fig. 4-1

parts to wear in properly. Ensure that the machine is in a

normal working condition before proceeding with the

running-in.

Refer to the applicable engine manual for details on running-in the engine.

The following points are not limitations but instead guidelines for familiarization of the machine and development

of good operating habits.

•

Operate as much as possible in the half to three-quarters throttle or load range.

•

When performing an engine cold start, keep the engine speed at or near idle until the engine reaches its

normal operating temperature.

•

Avoid long periods of operation with the engine at idle or continuous maximum horsepower levels.

•

Avoid sudden starts, movements or stops.

•

Manage engine power to a point that allows acceleration to governed speed when conditions require more

power.

•

Monitor the instruments frequently — especially the engine oil and coolant pressures. Shut down the

machine at the first indication of an abnormal reading.

•

Shift down to a lower speed setting before climbing up a slope to keep the engine speed elevated.

•

Check all components frequently for proper operation, unusual noises, and excessive heating.

•

Frequently check all machine operating temperatures. Determine the cause if overheating occurs and

perform adjustments or repairs immediately.

•

Always let the system cool down at the end of the working day.

•

Frequently check the bolts and screws for tightness.

•

After running-in has been completed, have the machine chassis maintenance procedures performed at an

authorized Sany service center.

4-9

Mount and Dismount the Machine

SY335 Excavator

MOUNT AND DISMOUNT THE MACHINE

Mounting or dismounting could pose some hazards.

Observe the following:

•

Always be sure the machine is at a full stop before

attempting to access the machine. Never jump onto

or off of the machine.

•

Never exit or enter the machine cab or deck by any

other means than the access systems provided steps

(a) and grab handles (b).

a

b

Typical

Fig. 4-2

a

•

Always maintain a three-point contact (both feet

and one hand or one foot and both hands) with the

handrails, steps, catwalks and platforms to ensure

that you support yourself properly.

•

If you will be walking on the carrier surface of the

machine, always try to maintain a three-point

contact whenever possible to help keep your

balance.

•

Do not walk on a surface of the machine if slip-

Fig. 4-3

resistant material is missing or excessively worn.

Do not step on surfaces of the machine that are not

approved or suitable for walking and working. Keep all walking and working surfaces of the machine

clean, dry and slip-resistant.

•

Wear shoes with a highly slip-resistant sole material. Clean any mud or debris from shoes before entering

the machine cab or climbing onto the machine superstructure.

•

Always keep handrails, step plates and walkway areas clean and clear of mud, oil, grease or similar debris.

If these areas are damaged, have them repaired or replaced immediately.

•

Never leave tools or similar objects on the machine catwalks or service areas. These could fall and get

caught in the machine operating systems.

4-10

Pre-Start Checks

SY335 Excavator

PRE-START CHECKS

CAUTION

Failure to perform this inspection and have needed issues resolved may result in further

damage to the machine or possible injury to the operator and other personnel.

Always complete a walk-around visual inspection of the

machine with special attention to structural damage, loose

equipment, leaks or other conditions that require immediate

correction for safe operation.

•

Check work equipment, cylinders, arms, and hoses

for cracks, excessive wear or loosening.

•

Remove any dirt or debris around the engine,

battery and tracks.

•

Check for any coolant or oil leaks around the

engine.

•

Check the hydraulic pump, hydraulic tank, hoses,

and joints for any sign of leaks.

Fig. 4-5

•

Check the undercarriage (track, sprockets, tension

rollers, and guards) for damage, wear, loose bolts,

or roller leakage.

•

Check the handholds and step for any looseness or damage.

•

Check the hoisting hook, guide plate and hook seat on the back of the bucket for any damage if

installed.

NOTE: If any problems are found during your pre-start check, have these problems resolved immediately.

Never operate a machine that is unsafe, damaged or in need of repair.

Daily Maintenance Record

Ensure that the Daily Maintenance Checks have been performed before operating this equipment.

4-12

SY335 Excavator

Pre-Start Checks

Fuel Level

To check the fuel level first make sure the fuel cap (a) is on

tight and locked.

a

Fig. 4-6

The system monitor (b) in the cab displays the fuel level

indicator (c).

b

Fig. 4-7

c

NOTE: See “Refueling” on page 2-25 if fuel level is low. Use the following fuel grades:

•-30# Diesel: -22° to 68° F (-30° to 20° C)

•-10# Diesel: 14° to 122° F (-10° to 50° C)

•0# Diesel: 32° to 122° F (0° to 50° C)

4-13

Pre-Start Checks

SY335 Excavator

Draining Primary Fuel Filter

CAUTION

Never smoke or service the fuel system near open burning locations. Doing so could result in

fire, explosion or possible injury.

1. Locate the primary fuel/water separator (a) within the

hydraulic pump enclosure behind the door on the right

side.

Fig. 4-8

a

2. Place an appropriate size container below the primary

fuel/water separator (a), then open the drain valve (b) to

allow all water or contaminated fuel to drain from the

filter.

NOTE: Avoid draining the primary fuel/water

separator completely, air could enter the fuel

system.

3. Close the drain valve (b) when the flow from the

primary fuel/water separator is free of water and

a

contamination, and dispose of the contaminated fuel

properly.

NOTE: See “Environmental Precautions” on page 2-

29

Fig. 4-9

b

4-14

SY335 Excavator

Pre-Start Checks

Hydraulic Oil Level

The work equipment should be positioned as shown in the

illustration. If the equipment is NOT in the illustrated

position, start the engine and, running the engine at low

speed, retract the arm and bucket cylinders, lower the boom

front end to rest on the ground, and stop the engine and

follow normal shutdown and parking procedures.

Typical

NOTE: See “Control Work Equipment” on page 4-46

Fig. 4-10

1. Locate the hydraulic oil level sight glass (a) within the

hydraulic pump enclosure behind the door on the right

side.

a

Fig. 4-11

4-15

Pre-Start Checks

SY335 Excavator

2. Check the hydraulic oil tank level.

NOTE: The oil level should be between the H and L

marks on the site glass (b). If the level is not

within the specified level fill the system with

b

hydraulic fluid (HDZ32 or HDZ46)

•HDZ32: -15° to 86° F (-25° to 30° C)

•HDZ46: -4° to 104° F (-20° to 40° C)

Fig. 4-12

Engine Oil Level

1. Open the engine hood (a).

a

Fig. 4-13

4-16

SY335 Excavator

Pre-Start Checks

2. Pull out the engine oil dipstick (b) and wipe off the oil

with a clean lint free cloth.

3. Insert the dipstick to the bottom and pull it out again.

Fig. 4-14

b

NOTE: The oil level should be between the H and L

marks on the dipstick. If the oil is not within

the specified level, fill the engine with engine

oil (until the oil level is between the H and L

Fig. 4-15

marks). Please use one of the following oil

types based upon the operating temperature of

your work area.

•5W- 30: -22° to 86° F (-30° to 30° C)

•5W- 40: -22° to 104° F (-30° to 40° C)

•10W- 30: -4° to 104°F (-20° to 40° C)

•15W- 40: -8° to 104° F (-15° to 40° C)

•40W: 32° to 104° F (0° to 40° C)

SAE/BHL Selector Switch

The SAE/BHL selector switch (a) is located below the

engine air cleaner inside the left side front cover.

a

Fig. 4-16

4-17

Pre-Start Checks

SY335 Excavator

The SAE/BHL selector switch (b) swaps the control of the

boom and the arm from one joystick to the other. To go to

SAE position see step 2, to go to BHL position go to step 1.

b

Fig. 4-17

1. Pull the pin up (c) and rotate the bar to the left for BHL.

Release the pin to lock the bar in place

BHL

c

Fig. 4-18

2. Pull the pin up (c) and rotate the bar to the right for

SAE. Release the pin to lock the bar in place

SAE

c

NOTE: See “SAE Control Pattern” on page 4-48 and

See “BHL Control Pattern” on page 4-49 for

more information.

Fig. 4-19

4-18

SY335 Excavator

Pre-Start Checks

Engine Coolant Level

WARNING

Check coolant level only when the engine is cold and there is no pressure in the system.

Failure to follow this directive may cause severe burns or other injuries.

1. Locate and open the Radiator Access Door (a) next to

the engine compartment.

a

Fig. 4-20

2. Check and make sure the radiator cap is cool to the

touch; then open the radiator cap (b) and visually check

to ensure that there is coolant in the radiator.

b

NOTE: Loosen the cap of the radiator slowly to

release internal pressures within the coolant

system.

3. Add coolant as necessary to a level that shows the

coolant in the bottom of the radiator neck (c).

NOTE: Use any coolant that meets the standards

outlined by American Society for Testing

and Materials

(ASTM) standard D6210.

Sany recommends use of Fleetguard Charge

c

D6210 coolant adding Supplement Coolant

Additive (SCA) as mandated by your work

environment.

Fig. 4-21

4-19

Pre-Start Checks

SY335 Excavator

Cab

Clean these items after each shift:

a

•

Windows (a) and mirrors

NOTE: Remove all trash from inside the cab to avoid

its interfering with operation of the

b

equipment.

•

Handrails (b)

c

•

Steps (c)

NOTE: Wipe the handrails to remove grease or dirt to

Fig. 4-22

b

help ensure a firm grip is possible when

entering or exiting the cab area.

Safety, Operation and Maintenance

Manual

Ensure that the Safety, Operation and Maintenance Manual is in the cab.

Seat, Seat Belt, Mirrors and Backup

Camera

Seat and Seat Belt

1. Always adjust the driver’s seat to the position in which

you will drive before fastening the seat belt.

a

NOTE: See “Seat and Seat Belt” on page 3-6 for

additional information

2. Pull the belt across your lap and push the latch plate (a)

into the buckle (b) until it clicks.

b

3. To reduce the risk of sliding under the belt during a

collision, put the belt across your lap as low on your

Fig. 4-23

hips as possible and pull it towards the door to a snug fit

so the retractor can take up the slack.

NOTE: The lap/shoulder belt is designed to lock only during a sudden stop or impact. At other times it should

move freely.

4-20

SY335 Excavator

Pre-Start Checks

4. If the shoulder belt is too snug, do the following:

A. Pull the shoulder belt out at least 5 in. (13 cm) so

that when it is released, it returns to your chest.

B. Then pull down on the shoulder belt the least

amount needed to ease pressure but no more than

1.0 in. (25 mm) and release it.

Fig. 4-24

5. To reduce slack in the belt, pull the belt out as you did in

step 4A.

WARNING

Keep any shoulder belt slack to no more than 1 in. (25 mm). Belt slack beyond this amount

could significantly reduce your protection in an accident because the belt is too loose to

restrain you as intended. Failure to observe and follow this warning could result in personal

injury or death.

6. To unfasten the belt, press the button (b) in the center of

the buckle. To store the belt, pull it out about 7 in.

(18 cm) and release it.

The belt should retract when the buckle is unlatched. To

help prevent damage to the seat belt and interior, be sure the

belt is fully retracted and the latch plate is out of the way

before closing the door.

b

NOTE: Seat belt assemblies are maintenance-free;

Fig. 4-25

however, they should be periodically

inspected to ensure that they are not

damaged and are in proper operating

condition, especially if they have been

subjected to severe stress.

Mirrors

Adjust the side mirrors for clear vision and safe driving.

NOTE: See “Cab Exterior” on page 3-4 for additional

information.

4-21

Pre-Start Checks

SY335 Excavator

Backup Camera

a

Ensure your rear view camera (a) is operating correctly and

is free of all obstructions.

NOTE: See “Combined Instrument Display screen”

on page 3-28 for additional information.

Fig. 4-26

Work Lights and Warning Devices

Check the following for proper operation with the key set

to the ON position (a).

•

Work Lamps (b)

•

Horn (c)

•

Travel alarm (sounds when travel pedal or lever is

moved)

c

a

b

Fig. 4-27

4-22

SY335 Excavator

Pre-Start Checks

Operator Controls

Check all operator control lever movements for smooth

operation with key in the ON position. The control lever

should return to neutral freely. There should not be any

excessive play in the control lever.

NOTE: See “Cab Interior” on page 3-5 for controls

information.

Fig. 4-28

Fire Extinguisher & Escape Tool

Check that both the fire extinguisher (a) and the escape tool

(b) are on the back wall of the cab.

b

NOTE: Be sure the fire extinguisher is a minimum of

a 10 pound “A, B, C” fire-rated extinguisher

(ASME B30.5-2007).

NOTE: See “Extinguisher and First Aid Kit” on

page 2-14.

Typical

a

Fig. 4-29

4-23

Combined Instruments Display/Monitor Settings

SY335 Excavator

COMBINED INSTRUMENTS DISPLAY/MONITOR SETTINGS

When the key switch of machine is turned to the ON position, the Combined Instrument Display is energized by

the engine battery and initializes. A full display of the working Combined Instrument Display is shown below:

2

Fig. 4-30

1

Additional details may be seen on the display by using the Function Icons (1) and the corresponding Function Keys

(2).

Set Language Display - First Time

1. Turn the ignition switch

(a) to the ON position to

display the Operator screen on the Combined

Instrument Display.

a

Fig. 4-31

4-24

SY335 Excavator

Combined Instruments Display/Monitor Settings

2. Press Key 5 to go to System Information/Password (b)

See “Function Keys” on page 3-28.

3. Enter your 5-digit password. Each digit is indicated by

an asterisk (*) standing for a value from 0 to 9. A

numeral appears at the digit where the cursor is located

while the other four digits remains as asterisks.

4. Pressing Key 2 switches between Left-Right function

and increase/decrease function.

5. Pressing Key 1 goes back to previous page.

Fig. 4-32

b

Use the function keys to:

•

Key 1: Back to previous page.

•

Key 2: Start or stop setting up the code number on digit where the cursor is located.

•

Key 3: Decrease a value or move the cursor to the left digit.

•

Key 4: Increase a value or move the cursor to the right digit.

•

Key 5: Check the validity of password entered. If it is valid, you have access to the Main Menu.

4-25

Combined Instruments Display/Monitor Settings

SY335 Excavator

6. Once you enter the password you should go to the Main Menu. (See “Main Menu Functions” on page 3-30).

These are a list of system functions that can be accessed by selecting an item and then entering the

corresponding page. Each icon will be highlighted as you chose them.

Fig. 4-33

•Parameter - view the running parameters of the engine and hydraulic system

•Maintenance - view maintenance information on the machine

•Fault Info (Error codes)

•System Setup - language selection

•Machine Config - configure the machine and view configuration of the machine

•Tools Select (Bucket- Breaker - Nibbler)

4-26

SY335 Excavator

Combined Instruments Display/Monitor Settings

7. Go to System Settings for language selection

(See

“System Language Selection” on page 3-33).

8. Pressing Key 5 will take you to Language Setting.

Fig. 4-34

9. You will see a display of language options.

•

Press Key 3 to scroll up the list.

•

Press Key 4 to scroll down the list.

•

Press Key 5 to accept the language selected.

Fig. 4-35

Set Date/Time Setting - First Time

1. Press Key 1 to go back to the System Setting screen.

2. Press Key 4 to go down the list to Date/Time Setting

and then Press Key 5 to accept. (See “Time Setup” on

page 3-33).

Fig. 4-36

4-27

Combined Instruments Display/Monitor Settings

SY335 Excavator

3. Press Key 2 to start/stop modifying the value of digit at

where the cursor is located.

4. Press Key 4 to switch between the increase/ decrease

keys and left-right keys.

5. Press Key 5 to accept time setup and return to previous

page.

Fig. 4-37

4-28

SY335 Excavator

Engine Procedures

ENGINE PROCEDURES

WARNING

Never attempt to start the machine if it has been

locked out by maintenance personnel. If in

doubt, contact the maintenance supervisor.

Failure to follow this can cause damage to the

machine, and could lead to serious injury or

death.

NOTE: Check the work area to be sure all personnel

and equipment are clear from your machine.

Before starting the machine, sound your

horn to warn others you are about to start the

machine.

Starting and shutdown procedures for most diesel engines

Fig. 4-38

are generally the same. Therefore, use the following

procedures except where specific differences are noted.

(Refer to the applicable engine manufacturer’s manual for detailed procedures.)

WARNING

Diesel engine exhaust can be harmful to your health or even fatal. Operate the engine only in a

well-ventilated area or vent the exhaust to the outside. Failure to observe and follow this

warning could result in personal injury or death.

Cold Weather Operation

The following recommendations are for operating Sany excavators in very low (i.e., sub-zero) temperatures.

NOTE: Detailed cold weather starting and operating procedures are covered in the engine manual.

This machine must have appropriate hydraulic oil, lubricants and other auxiliary items required for operation in

sub-zero temperatures. Individual machine functions should be operated to ensure they are sufficiently warmed

prior to performing work. Contact your Sany representative for recommended lubricants and fluids for cold

weather operations.

Operation of machine at full rated capacities in temperatures between 0°F (-18°C) and -40°F(-40°C) or lower

should be accomplished only by competent operators who possess the skill, experience, and dexterity to ensure

smooth operation. Shock loading must be avoided.

The correct grade of oil for the prevailing temperature must be used in the crankcase. Diesel fuel must have a pour

point of 10°F (6°C) less than the lowest expected temperature.

4-29

Engine Procedures

SY335 Excavator

Cold weather operations requires additional precautions:

•

Do not touch cold metal surfaces that could cause you to freeze to them.

•

Keep the machine clear of all ice and snow.

•

Allow sufficient time for the hydraulic oil to warm up.

•

Park the machine in an area where it will not freeze to the ground.

Engine Start Procedure

CAUTION

Do not spray starting fluid into the air inlet. The spray will contact the heater elements and

could explode causing equipment damage and personal injury.

CAUTION

NEVER attempt to start the machine if it has been locked-out by maintenance personnel or if

the main power disconnect switch is in the OFF position. If in doubt, contact the maintenance

supervisor. Failure to observe and follow this caution may result in equipment damage,

improper equipment operation or personal injury.

Perform the following steps to start the engine:

NOTE: Detailed cold weather starting and operating procedures are covered in the engine manual.

1. Set the hydraulic lockout lever (a) to the LOCKED

position.

a

Fig. 4-39

4-30

SY335 Excavator

Engine Procedures

2. Set the throttle (b) to the MIN position.

3. Turn the ignition key (c) from OFF to ON.

c

b

Fig. 4-40

The monitor (d) displays the default screen two seconds

after the key is turned to the ON position. The display

allows access to:

•Displaying running parameters

•Viewing machine configuration

d

•Viewing failure codes

•Throttle (rpm)

•Setting up system clock

•Setting up service hours

Fig. 4-41

•Setting up key parameters

NOTE: The warning indicator lights if a fault is

detected. A fault code displays near the

bottom of the display. Contact your local Sany

service representative to correct the issue.

Fig. 4-42

4-31

Engine Procedures

SY335 Excavator

4. Turn the ignition key to START and release it immediately when the engine starts.

NOTE: If the engine fails to start after five attempts, correct the malfunction before attempting further starts.

Immediately check the engine instruments and monitor for any alarm codes after starting. Shut down the engine if

an alarm is displayed on the display screen.(See “Main Menu Functions” on page 3-30)

NOTICE

Never crank the engine for more than 15 seconds. If the engine fails to start after 15 seconds,

stop and allow the starter motor to cool for at least 10 seconds before attempting another

start. Failure to observe and follow this warning could result in equipment damage.

Idle the Engine

Idling the engine unnecessarily for long periods of time wastes fuel and fouls injector nozzles. Unburned fuel

causes carbon formation, oil dilution, formation of lacquer or gummy deposits on the valves, pistons, and rings,

and rapid accumulation of sludge in the engine.

NOTICE

NEVER race the engine during the warm-up period and NEVER operate the engine beyond the

governed speed. Engine bearings, pistons, and valves may be damaged if these precautions

are not taken. Failure to observe and follow this warning could result in equipment damage.

Engine Shutdown

1. Retract the arm and bucket cylinders, lower the boom

front end to rest on the ground

2. Run the engine at idle speed (1000 rpm) for about 5

minutes.

Fig. 4-43

4-32

SY335 Excavator

Engine Procedures

3. Turn the keyswitch (a) to the OFF position and remove

the key.

a

4. Operate all functional controls to relieve pressure on the

systems.

5. Remove the key from the switch.

Fig. 4-44

4-33

SY335 Excavator

Travel Operations

7. Press Key 1 to select the desired working mode.

1

NOTE: The working mode (2) is displayed in the

upper left corner of the monitor

screen.Working mode options are:

•

S: Standard duty: Used for normal excavating.

•

H: Heavy duty: Used for excavating in hard or

rocky ground.

•

L: Light duty: Used for light tasks such as digging

Fig. 4-45

in soft soil.

2

•

B: Breaker mode: Used when operating with

attachments such as a jackhammer.

Before Travel

1. Turn the throttle (a) clockwise to increase the engine

speed.

a

Fig. 4-46

4-35

Travel Operations

SY335 Excavator

2. Place the hydraulic lockout control to the UNLOCKED

position (b).

Typical

Fig. 4-47

b

3. Retract the working equipment until it is 16 - 20 inches

(40 - 50 cm) above the ground.

NOTE: See “Control Work Equipment” on page 4-

46.

Fig. 4-48

4-36

SY335 Excavator

Travel Operations

4. Move the boom to ensure good all round visibility.

NOTE: See “Control Work Equipment” on page 4-

46.

Typical

Fig. 4-49

NOTE: Whenever possible rotate the cab to face in

the direction of the arrow (c) painted on the

inside of the crawler track. If the track frame

faces the rear

(behind the sprockets), the

machine will move in a direction opposite to

the operating direction of travel control lever

or pedal (Both the forward and backward

travels are reversed, and the leftward and

rightward travels as well).

Typical

c

Fig. 4-50

4-37

Travel Operations

SY335 Excavator

Right Turn

The left travel control lever causes the left track to move

forward or backward depending on which direction the

control is moved.

NOTE: Forward direction of the left track is shown in

the illustration.

The further the control is moved in ether direction the faster

the left track moves.

Fig. 4-51

Left Turn

The right travel control lever causes the right track to move

forward or backward depending on which direction the

control is moved.

NOTE: Forward direction of the right track is shown

in the illustration.

The further the control is moved in ether direction the faster

the right track moves.

Fig. 4-52

Straight Travel

Moving both controls causes both tracks to move forward or

backward depending on which direction the control is

moved.

NOTE: Forward direction of both tracks are shown in

the illustration.

The further the controls are moved in ether direction the

faster each track moves.

Fig. 4-53

4-38

SY335 Excavator

Travel Operations

Counter Rotate

Left Zero Degree Rotation: Pushing the right lever

forward and pulling the left lever rearward causes a left zero

degree rotation of the machine.

Fig. 4-54

Right Zero Degree Rotation: Pushing the left lever

forward and pulling the right lever rearward causes a right

zero degree rotation of the machine.

Fig. 4-55

Slopes

Observe the following when operating an machine on a slope:

•

The slope - side-to-side or fore and aft - must not exceed 15%.

•

The hydraulic tank must be filled to the specified level (See “Hydraulic Oil Level” on page 4-15). The fuel

tank must be over half full.

•

Avoid holes, rocks, extremely soft surfaces, and other obstacles that might subject the machine to undue

stresses and possible tipover.

•

Position the bucket 16 - 20 inches (20 - 30cm) above the ground while traveling.

•

Always set the throttle and speed selector to maintain a slow speed while traveling up or down a slope.

•

Do not turn the machine while on a slope.

•

Do not travel in reverse on a slope.

4-39

Travel Operations

SY335 Excavator

Operations in Water

Observe the following when operating a machine in water:

•

Do not drive the machine into water where the

water level could reach the center of the carrier

rollers (1).

Fig. 4-56

NOTICE

If the swing bearing, swing gear and central swing joint are soaked in water, the drain plug

should be removed to drain mud and water then lubricate the mesh gear and swing bearing.

•

Do not operate the machine in water unless the foundation of the work site is strong enough to properly

support the machine.

•

Do not drive the machine out of water at an slope

greater than 15°, the engine cooling fan could be

damaged by immersion in the water.

•

Add grease to parts that have been soaked in water

until all the old grease is squeezed out of the

bearing.

Release Excavator from Mud

Fig. 4-57

If the machine becomes stuck in mud, drive it out of the

mud using the following methods:

One Track Stuck

1. Position the boom and arm at an angle between 90° and

110°.

NOTE: See “Operator Controls” on page 4-23

2. Pivot the upper structure to position the boom over the

track that is stuck.

Fig. 4-58

4-40

SY335 Excavator

Travel Operations

3. Curl the bucket so that the back of the bucket contracts the ground. Use cribbing to provide a firm surface if

necessary.

4. Move the joystick forward to lower the boom to lift the track.

5. Place cribbing under the track.

6. Drive the machine out of the mud.

NOTE: See “Travel Operations” on page 4-34

Two Tracks Stuck

1. Position the boom and arm at an angle between 90° and

110°.

2. Pivot the upper structure to position the boom over the

front of the machine.

3. Curl the bucket so that the back of the bucket contracts

Fig. 4-59

the ground. Use cribbing to provide a firm surface if

necessary.

4. Move the joystick forward to lower the boom to lift the front of the tracks.

5. Place cribbing under the tracks.

6. Cut the bucket into the ground in front of the machine.

7. Retract the arm as done with normal excavating while driving the machine forward out of the mud.

4-41

Content      ..     2      3      4      5     ..