Takeuchi Hydraulic Excavator TB175 (No. 17512105~). Operator's Manual (2007) - page 4

CONTROLS

Switches

Starter Switch

IMPORTANT: Do not repeatedly switch
the key from OFF to ON and ON to OFF
over a short period. Doing so will cause
engine breakdown.

OFF ........ Position for stopping the engine

and inserting or removing the key.

ON .......... Position in which the engine is

running. At this position, all the
electrical equipment is functional.
When the coolant temperature is
low, the air heater is energized
and automatic preheating is
done.

START .... Position for starting the engine.

When the key is released, the
switch automatically returns to the
ON position.

L3B043

START

OFF

Battery Switch

IMPORTANT: Never set this switch to the
OFF (O) position while the engine is
running.
Doing so might cause damage to the
electrical system.

OFF (O) .. Switches off the electrical circuit.

Be sure to set this switch to the
OFF (O) position when storing the
machine for a long period, or
when performing maintenance of
the electrical system.

ON ( I ) .... Connects the electrical system.

Check that this switch is in the
ON ( I ) position before starting
the engine.

Supplement: Setting this switch to the
OFF (O) position will shut down all of the
electrical circuits and the memory of the radio
preset tuning buttons will be deleted.

L3C004

CONTROLS

Switches

Horn Button

Press the button on the right operating lever
to blow the horn.

Decel. Button

WARNING

Set the operating and travel levers to
neutral before operating the decel. button.
The machine’s operating speed will
change abruptly if the button is operated
while the levers are engaged.

Press the button on the right operating lever
to lower the engine speed to low idling.
Press the button again to return to the engine
speed set with the throttle or power mode
buttons.
Note: The one-touch decelerator is a device
for lowering the engine speed and reducing
fuel consumption when little engine output
is required, for example when the operating
and travel levers are in neutral.

Selector Button (2-Piece boom)

WARNING

Pressing (switching ON or OFF) the
selector button while the boom swing
pedal is depressed is dangerous, since
the attachment will move unexpectedly.
Always set the boom swing pedal back
to the neutral position before operating
the selector button.

This button changes from the boom swing
operation to the intermediate boom
operation.
Press this button to change over to operation
of the intermediate boom . The intermediate
boom operation indicator lamp will light. One
more press of this button will result in a return
to boom swing operation. Actual operation
is performed with the boom swing pedal.

L3B046

L3B0471

L3L020

CONTROLS

Travel Speed Switch

WARNING

When a load greater than a set value is
applied during 2nd speed (high speed)
travel, the speed will automatically slow
down by switching to 1st speed (low
speed). Thereafter, when the load
becomes lighter, the speed will increase
by returning to 2nd speed (high speed).
Exercise due caution since the travel
speed changes automatically.

Press this switch to set the travel speed to
2nd speed (high speed). Press again to
return to 1st speed (low speed).

Switches

First Auxiliary Hydraulic Switches

Slider Switch
(Proportional control)
Proportional control allows for slow-to-fast
movement of auxiliary functions.
Example: If you move the slider switch half
way, the auxiliary function will move at
approximately one-half speed.

Move this switch to control the flow of the oil
in the first auxiliary hydraulic lines.

Auxiliary Hydraulic Buttons

Press those buttons to control the flow of the
oil in the first auxiliary hydraulic lines.

Proportional control of the auxiliary
hydraulic circuit is not possible.

(A) .... Hydraulic oil flows to left auxiliary

line(a)

(B) .... Hydraulic oil flows to right auxiliary

line(b)

Intermediate Boom Operation
Indicator Lamp (2-Piece boom)

This lamp illuminates when the intermediate
boom operation is chosen by the selector
button.

L3L017

L3L021

L3L035

CONTROLS

Switches

Power Mode Buttons

The engine speed can be changed at the
touch of a button. When one of these buttons
is pressed, the engine is set to the set speed
and the power mode indicator lights.

This mode is always set when the
engine is started.
Use it for light and very light operations.

FC: Use this mode for light operations and

leveling operations which do not require
speed. Using this mode reduces fuel
consumption and noise.

H: Use this mode for general digging and

loading operations requiring power and
speed.

Throttle Buttons

The engine speed increases and decreases
continuously while these buttons are
pressed. When the button is released, the
engine speed is set to the speed at the time
the button is released.

: Engine speed increases

: Engine speed decreases

When the throttle buttons are operated and
the engine speed is at a point between the
different modes, the lamps on both sides
light. When the speed is changing, only the
lamp for the nearest engine speed lights.

L3B025

L3B026

L3D005

CONTROLS

Light Switch

When this switch is turned while the starter
switch is at ON, the lights turn on as follows:
O ...... Off
I ....... Meter light, front light, side lights, tail

lights and boom light turn on.

Wiper Switch

IMPORTANT: If no washer fluid is
discharged, do not operate the washer.
Doing so may damage the pump.
IMPORTANT: Operating the wiper with no
moisture on the windshield will scratch
the glass. Apply water or washer fluid
when operating the wiper.
IMPORTANT: In cold seasons, the wiper
blade may freeze to the glass. Operating
the wiper forcibly may damage the wiper
motor.

O ............ Off
I ............. Wiper INT
II ............ Wiper
PUSH ..... Washer

Switches

Slew Speed Switch

Pressing this switch shifts rotation into Slow
speed, bringing its speed down to the
minimum. Slow speed is useful for
performing tasks that require precision
handling even at the cost of speed or
efficiency.

Slow speed
The lamps on the switch and instrument
panel will light up. Used for low speed slew.
The maximum set speed in slow speed can
be adjustable.
Upon shipment, it is set to 7.6 min

–1

(7.6 rpm).

Contact a Takeuchi sales or service outlet
for change.

Normal speed
The lamps will go out and slew will return to
its normal speed.
Supplement: As a safety precaution, the
machine is designed so that you cannot
switch to normal speed while slewing in slow
speed. You must instead bring the rotation
to a temporary halt and then press the slew
speed switch to return to normal speed.

L3B027

L3B028

L3B0291

PUSH

CONTROLS

Levers and Pedals

Operating Levers

WARNING

Be careful to check which pattern of
lever control arrangement you are
operating with before beginning
operations.

The explanations in this manual are for
the ISO pattern.

Use these levers to operate the boom, arm,
bucket and upperstructure (slew).

Refer to page 68 “Lever Pattern”.
Refer to page 75 “Operating the Working
Equipment”.

Safety Lock Lever

WARNING

Before leaving the operator’s seat,
raise the safety lock lever to engage
the lock and stop the engine.
If any controls should be touched
accidentally when the safety lock lever
is lowered, the machine will move
suddenly, and cause serious injury or
death.

Note that the dozer blade control is not
locked, even when the safety lock lever
is set to the lock position. Do not touch
this control accidentally.

Be careful not to touch the operating
levers when raising and lowering the
safety lock lever.

This device is for locking the hoe attachment,
auxiliary hydraulic control, slewing and
traveling.
When the lever is raised, the lever stand
springs up and the lever is locked.

Boom Lock Valve (2-Piece boom)

Serial No. 17510003 ~ 17512503
This valve blocks the hydraulic oil flow to
prevent the boom from lowering.
Lower the lever to engage the boom lock.
Raise the lever to disengage the boom lock.

L3B030

L3L023

L3B048

CONTROLS

Levers and Pedals

Blade Lever

Use this lever to operate the dozer blade.
(A) .... Blade up
(B) .... Blade down

Refer to page 76 “Operating the Dozer
Blade”.

Travel Levers

WARNING

Before operating the travel levers, check
to make sure that the dozer blade is to
the front of the operator’s seat. BE
AWARE that when the dozer blade is to
the rear of the operator’s seat, the travel
levers operate in the opposite direction
to when the dozer blade is in the front.

Use these levers to move forward and
backward and to change directions.

Refer to page 72 “Operating the Travel
Levers”.

Boom Swing Pedal

Use this pedal to operate the boom swing.
Operation switches to the intermediate boom
when the selector button is pressed.
(A) .... Boom swing left/Intermediate boom

raise

(B) .... Boom swing right/Intermediate boom

lower

Refer to page 76 “Operating the Boom
Swing” or “Operating the Intermediate
Boom”.

Pedal Lock

WARNING

When not using the pedal, set the pedal
lock to the locked position. Stepping on
a pedal accidentally when it is not locked
may lead to unexpected accidents.

This device is for locking the swing pedal.
Set the pedal lock over the pedal to lock it.

L3B049

L3B050

L3B051

L3B052

CONTROLS

Accessories

Outlets

Move knob (1) up and down or left and right
to adjust the direction of the air.

Supplement: Use the heater with care in
warm seasons. Coolant circulates in the
heater even when the heater switch is turned
off.
When the heater is no longer needed, stop
coolant circulation as follows:

IMPORTANT: Use the valve (1) either fully
open or fully closed.
Cooling water could leak when the valve
is set at a halfway position.

1. Park on a flat surface and stop the engine.
2. Open the maintenance cover.
3. Turn the valve (1) clockwise until it stops

to close it.

Heater

WARNING

Always be sure to allow sufficient
ventilation.

Do not place combustible or explosive
objects near the air outlets.

Fan Switch

OFF .. Off
o ...... Heater fan rotates at low speed.
O ...... Heater fan rotates at high speed.

Heater / Defroster / Ventilation /
Circulation Switch

Use this switch to heat the cab and to defrost
the windshield.

..... Heater
..... Windshield defroster

.... Full ventilation
.... Half ventilation

...... Internal circulation

L3B037

OFF

L3B038

L3B039

L3C003

CONTROLS

Accessories

First Auxiliary Hydraulic Lines

WARNING

Oil may spurt out if caps or filters are removed
or pipes disconnected before releasing the
pressure in the hydraulic system.

When disconnecting hoses, release the
internal pressure before removing.

These lines deliver the hydraulic oil
necessary for operating a hydraulic breaker,
crusher or other attachments.

Stop valve .....

: Closed

: Open

Connecting the Hydraulic Circuits
To connect the attachment hydraulic lines,
use the following procedures:
1. Release the pressure remaining in the

lines then close the stop valve.
Refer to “Releasing the residual pressure”.

2. Remove the plugs.
3. Connect the attachment hydraulic lines to

ports (a) and (b).
When fitted with a hydraulic breaker,
connect the return circuit to port (b) and
the supply circuit to port (a).

4. Open the stop valves.

When fitted with a hydraulic breaker, open
the selector valve (1).
Refer to page 57 “Selector Valve”.

5. When connecting is complete, purge air

from the hydraulic lines.
a. Start and run the engine at low idle with

no load for 10 minutes.

b. With the engine running at low idle

operate the auxiliary hydraulic switches
repeatedly (approx. 10 times) to purge
air from the hydraulic lines.

c. Stop the engine and wait for more than

5 minutes until bubbles escape from the
hydraulic oil in the tank.

IMPORTANT: Follow the procedures for
purging air as instructed by the attachment
manufacturer if specified to do so.

6. Check for leaks.

Disconnecting the hydraulic circuits
1. Release the pressure remaining in the

lines then close the stop valve.
Refer to “Releasing the residual pressure”.

2. Disconnect the lines from ports (a) and (b).
3. Install the plugs.

Releasing the residual pressure
After using the auxilliary hydraulic circuits,
pressure remains in the circuits. This is called
the residual pressure. Release this residual
pressure before disconnecting the lines.

1. Start the engine and press the auxiliary

hydraulic button (B).
(The residual pressure is released from
the (a) port line, and pressure is generated
in the (b) port line.)

2. Stop the engine and open the selector

valve (1) on the machine body.
(The residual pressure is released from
the (b) port line.)

When equipped with accumulator (option):
Refer to page 199 “Accumulator”.

L3C0012

L3L035

CONTROLS

Accessories

N0B031

N0C008

Selector valve

Open ............ When using a hydraulic

breaker (1-way flow)

Closed .......... When using a reversible

attachment (2-way flow)

Change the direction of the hydraulic oil flow
by opening or closing the selector valve on
the machine body.

External Power Sockets (for EU)

WARNING

Only use applicable electric products with
these sockets.

for Beacon

Use these sockets as an external power
supply. When using this socket, be careful
not to exceed 24V/5A.
To use, raise the cap (1).

Interior Light

IMPORTANT: The battery capacity will
decrease if the interior light is left on for
long periods of time the engine stopped.
Turn the lamp off when leaving the
machine.

OFF ........ Lamp is turned off all the time,

with no regard for the door being
opened or closed.

Neutral .... Lamp is turned on when the door

is opened, and it turned off when
the door is closed.

ON .......... Lamp is turned on all the time,

with no regard for the door being
opened or closed.

CONTROLS

Accessories

Cigarette Lighter

WARNING

Do not leave the cigarette lighter’s
knob pressed in. Doing so heats up the
lighter, and could be dangerous.

If the knob does not pop out after 30
seconds, it may be broken. Pull it out
by hand.

Do not use other cigarette lighters, as
they may get stuck.

Only use applicable electric products
with this socket.

Do not touch metal parts of the lighter.
Doing so could cause burns.

This is the cigarette lighter and internal power
supply socket.
When using this socket, be careful not to
exceed 24V/5A.

1. Press the lighter in.
2. Release the lighter and wait for it to pop

out. The lighter pops out automatically
when the heater becomes red.

3. Once the lighter pops out, pull it out.

Ashtray

WARNING

Be sure to extinguish cigarettes and
matches completely before putting
them in the ashtray, and always close
the ashtray afterwards.

Do not overfill the ashtray with
cigarette butts or put in paper or other
easily burnable objects. Doing so could
lead to fire.

Pull the ashtray out towards you to use it.
To clean, press the ash discharge button (1)
and pull out the ashtray.

L3B041

L3B042

CONTROLS

Accessories

Radio

Operating precautions

To ensure safe operation of the machine, always be sure to keep the volume of the radio
down to a level where you can easily hear sounds from outside the machine.

Do not keep the radio playing for long periods of time with the engine stopped. Doing so
will drain the battery of its charge and make it difficult or impossible to restart the engine.

Be careful not to allow water or other liquids to come into contact with the radio. Doing so
may result in it being rendered inoperable.

Be careful not to insert cassette tapes backward. Doing so may damage the cassette
player. Insert tapes with the head of the tape facing to the right.

Always remove the cassette from the player when not in use.

Names of components

(1) (2) Power switch / volume control knob
Turn this knob clockwise. The “click” sound
indicates that the power supply is turned on.
Further turning increases the speaker
volume. If a tape is loaded in the radio, eject
the tape to switch to the radio.

(3) Tone control

Bass control knob

Treble control knob

VOL

PS/AS

BASS

LOUD

DISP

BAND

SEEK

MTL LOUD ST

FM1
FM2

METAL

DC12V/24V

AUTO REVERSE CASSETTE STEREO RECEIVER

KRH–M867

TRE

1 2

13 14

L2C001

CONTROLS

Accessories

(4) Program indicators
Indicates tape direction. When

lamp is on.

Upper side of a tape is playback,

indicates

playback of lower side.

(5) Display

(A) Band
(B) Time/Frequency
(C) Memory channel(1–6)
(D) Metal
(E) FM Stereo
(F) Loudness
(G) Tape direction

(6) Eject button
Push this button to eject the cassette tape.

To change over to radio while listening to
a cassette tape, press the EJECT button
to stop the tape and the system will
automatically change over to radio.

(7) Cassette door
Insert the cassette tape with the exposed
magnetic tape side facing to the right.

Simply insert a tape to change over to the
cassette tape mode while listening to the
radio.

(8) Fast-forward / rewind / program

changeover button

Fast-forward

Fast-rewind / Stop

To fast-forward the tape, push the button
matching the direction of program indication
and to rewind, push the other button. To stop
fast-forwarding or rewinding, lightly press the
button which is not locked to cancel the
operation. The system will then start playing
the tape again normally.

MTL LOUD ST

FM1
FM2
AM

L2C002

D F

E G

MTL LOUD ST

FM1
FM2
AM

L2C003

MTL LOUD ST

FM1
FM2
AM

L2C004

CONTROLS

Accessories

To change the program, press the fast-
forward and rewind buttons simultaneously.
The direction of tape feed will reverse.

When the tape ends in one direction, the
system automatically reverses the tape
and plays the other side.

To stop fast-forwarding or rewinding, lightly
touch the unlocked key. This frees the
locked key and normal playing resumes.

(9) Tuner switch (Manual tuning)
Pressing the shaped TUNER button raises
the receiving frequency. Pressing the
shaped TUNER button lowers the receiving
frequency similarly. Pressing either of these
buttons continuously shifts the receiving
frequency continuously.

(10) SEEK switch
Pressing the “SEEK” button shifts the
receiving frequency in the higher or lower
frequency direction before automatically
stopping at a position where a station is
picked up.

(11) LOUD switch
This button is used to operate the system at
a lower sound volume but with enhanced
bass and treble sound. (“LOUD” indication
appears on the display.)

(12) Band select switch
Pressing the “BAND” button changes over
between FM1, FM2 and AM (MW) bands.
The display indicates the receiving band
name and frequency.

(13) Metal switch
Press the “MTL” (5) button before playing a
metal or CrO

tape.

The “MTL” indication appears on the display.

(14) Preset switch keys
One station each in the FM1, FM2 and
AM(MW) bands, respectively, can be preset
for each of these preset keys.
When listening to a preset station, select
either of the AM, FM1,FM2 bands using the
band select switch, then simply press the
number key corresponding to the preset
selected station.
The system can memorize 6 stations in AM
band and 12 stations in FM bands (FM1: 6
stations and FM2: 6 stations).

Manual Memory
Use manual tuning button or seek tuning
button to choose a radio station if a
broadcasting station is wanted to be
recorded. For 2 seconds press 1–6 preset
key when the indication of frequency has
already shown and the frequency is
recorded. Flash stops and channel starts
functioning.

If the main power supply is interrupted,
such as when exchanging machine
battery, all presettings will be erased.
Repeat the presetting procedure in
such case.

MTL LOUD ST

FM1
FM2

METAL

DC12V/24V

AUTO REVERSE CASSETTE STEREO RECEIVER

KRH–M867

L2C005

CONTROLS

Accessories

(15) DISP(Time/Frequency) button
This system is equipped with a clock which
can show the accurate time. Even if the radio
is off, the clock still shows the time.

(16) PS/AS switch
Push this button 2 sec below will
automatically operates to show the
memorized station from 1 to 6. The signal
scaning start by pushing this button
momentarily. When a station is received the
scaning automatically stops there for 5
seconds FLASHLY and then resumes
scaning. As soon as the desired station is
found, press the this button again.

If you will auto memory push this button over
5 sec so initiates a scan of the band. Station
frequencies are either stored in order of low
of frequency for FM, or in sequence for AM,
starting from preset channel 1. If all of the
preset channels have not been filled up after
one scan, the remaining preset channels are
left unchanged, and channel 1 is recalled.
Channel 8 flashes during A.

Set the time

After pressing DISP button, press tuner
button or to correct the time. Press tuner
button

to set the “hour” and tuner button

for setting the “minute”. Set the time when

the time is shown.

VOL

PS/AS

BASS

LOUD

DISP

BAND

SEEK

TRE

LOUD

DISP

SEEK

TRE

L2C006

Before Starting Operation ......................... 64

Starting and Stopping the Engine ............. 65

Machine Operation ..................................... 68

Operating Procedures ............................... 78

Parking the Machine .................................. 86

Handling in Cold Weather .......................... 87

Handling Rubber Crawlers ........................ 88

OPERATION

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