Takeuchi Hydraulic Excavator TB175W (No. 175400095~). Operator's Manual

TROUBLESHOOTING

If a Warning Lamp Flashes

Warning lamp

Lamp name

Procedure

Water

Water has accumulated in the water separator. Drain

separator

the water.

warning lamp

Refer to page 148 “Draining the Water Separator”.

Fuel level

The fuel level is low. Supply fuel.

warning lamp

Refer to page 45 “Fuel Filler Cap”.

Brake oil

The brake fluid pressure is low.

pressure

Consult a Takeuchi sales or service outlet.

warning lamp

W2J003

Third auxiliary

Pressure in the third auxiliary hudraulic lines is low.

hydraulics

Consult a Takeuchi sales or service outlet.

warning lamp

W2J004

(option)

161

TROUBLESHOOTING

Other Symptoms

For symptoms not included on the table below or if the problem persists after the proper

procedures have been taken, consult a Takeuchi sales or service outlet.

Symptom

Main cause

Procedure

Left and right operating

Insufficient grease on left and

Add grease.

levers and boom swing

right operating levers and

Refer to page 151.

pedal do not move

boom swing pedal

smoothly

Steering operation not

Defective steering unit

Contact a sales or service

possible

outlet.

Hoe attachment,

Safety lock lever is locked

Release the safety lock

auxiliary hydraulics,

lever.

slewing or traveling

Fuse is blown

Refer to page 57.

operation not possible

Replace the fuse.

Refer to page 158.

Digging force is

Insufficient hydraulic oil level

Replenish to the prescribed

insufficient

level.

Refer to page 118.

Hydraulic oil is not heated

Perform the warm-up

procedure.

Refer to page 76.

Air cleaner is clogged

Clean the air cleaner.

Refer to page 131.

Hydraulic oil is not of suitable

Replace the hydraulic oil.

type

Refer to page 142.

Traveling is not possible

Stones or foreign objects are

Remove the foreign object.

or not smooth

stuck

Brake pedal is locked

Release the brake pedal.

Refer to page 59.

Parking brake is activated

Turn off the parking brake

switch.

Refer to page 51.

Release the safety lock

lever.

Refer to page 57.

Machine does not travel

Stones or foreign objects are

Remove the foreign object.

straight forward

stuck

Air pressure in tires is uneven

Make the air pressure in the

different tires uniform

Slew speed cannot be

Fuse is blown

Replace the fuse.

shifted

Refer to page 158.

162

TROUBLESHOOTING

Other Symptoms

Symptom

Main cause

Procedure

Travel speed cannot be

Fuse is blown

Replace the fuse.

changed

Refer to page 158.

Slewing is not possible

Insufficient grease on slew

Add grease.

or not smooth

bearing

Refer to page 127.

Hydraulic oil

Insufficient hydraulic oil

Replenish to the prescribed

temperature is too high

level.

Refer to page 118.

Starter motor turns but

Insufficient fuel

Add fuel.

engine does not start

Refer to page 118.

Air in fuel system

Bleed the air.

Refer to page 157.

Water in fuel system

Drain the water.

Refer to page 148.

Engine exhaust is white

Excessive engine oil

Adjust to the prescribed

or bluish

level.

Refer to page 117.

Poor fuel

Replace the fuel.

Engine exhaust is

Air cleaner is clogged

Clean the air cleaner.

occasionally black

Refer to page 131.

Irregular noise is

Low quality fuel is being

Replace the fuel.

produced from the

used

engine (combustion or

Engine is overheating

If the Engine Overheats

mechanical noise)

Refer to page 155.

Damage in muffler

Replace the muffler.

(Request at a sales or

service outlet.)

163

TROUBLESHOOTING

To Lower the Boom

If the hoe attachment must be lowered to the

Procedure 2

ground while the engine is stopped, use the

If equipped with emergency shut-off valve

following procedures to do so.

WARNING

Do not approach in the area of the

ground where the hoe attachment is to

be lowered. You may be hit by dirt falling

out of the bucket or the hoe attachment

as it drops.

W2L008

Procedure 1

Perform the following procedure within 10

minuites after the engine is stopped.

1. Turn the starter switch key to the ON

position.

2. Release the safety lock lever.

3. Lower the boom by the operating lever.

4. Check for safety and machine stability.

W2L009

1. Check for safety in the working area and for

stability of the machine and lifted load.

2. Remove the cap (2).

3. Loosen the lock nut (3).

4. Tighten the stem (4) to lower the boom.

5. Check for stability of the hoe attachment

and load.

6. Loosen the stem (4) secure it with the lock

nut (3).

164

TROUBLESHOOTING

Towing

Knock plate (T) in the direction of the spring

WARNING

brake cylinder.

When towing, selecting the wrong wire

When next operated (releasing the parking

rope, inspecting improperly, or towing in

brake), the original position resumes.

the wrong way could lead to accidents

resulting in serious injury or death.

The wire rope breaking or coming

detached could be extremely dangerous.

Use a wire rope suited for the required

towing force.

Do not use a wire rope that is kinked,

twisted or otherwise damaged.

Do not apply strong loads abruptly to

W2A033

the wire rope.

Use safety gloves when handling the

Permissible forces:

wire rope.

25500 N (5730 lb) or less

Make sure there is an operator on the

machine being towed as well as on the

1. Attach the wire rope to the shackle (1).

machine that is towing.

2. Attach the wire rope to the object to be

Never tow on slopes.

towed.

Do not let anyone near the wire rope

3. Make the wire rope horizontal and line up

while towing.

straight with the travel frame.

4. Move the machine to tauten the wire

Towing the Machine

rope.

The machine is to be towed only when

5. Move the machine slowly and tow.

strictly necessary to remove it from danger.

In the interests of safety, towing operator is

reponsible for the following:

To ensure that a rigid towing rod and a

tow-truck with sufficient braking power are

used.

No servo-assisted steering - only manual

steering with great force.

W2E0151

Release the parking brake (if control oil

pressure fails):

165

SPECIFICATIONS

Main Specifications

TYPE

2-Piece Boom

Mono-Boom

MASS

Machine mass kg (lb.) (not including operator)

8140 (17950)

7845 (17300)

PERFORMANCE

Heaped

0.245

(8.65)

Bucket capacity m³(cu.ft.)

(standard bucket)

Struck

0.185

(6.53)

Slow speed

4.3 to 8.0 (4.3 to 8.0)*

Slew speed min^-1

(rpm)

Normal speed

10.9

(10.9)

Creep

0 to 4.5 (0 to 2.8)

Forward

Site

0 to 9.0 (0 to 5.6)

Road

0 to 30 (0 to 18.6)

Travel speed km/h (mph)

Creep

0 to 4.5 (0 to 2.8)

Reverse

Site

0 to 9.0 (0 to 5.6)

Road

0 to 30 (0 to 18.6)

Gradeability (degrees)

Sound-power level

L WA 99

Noise level

dB(A)

Sound-pressure level

L pA 77

ENGINE

Manufacturer and model

Yanmar 4TNV98T-ZSTBW

Rated output

kW / min^-1 (hp / rpm)

53.6 / 2200 (71.9 / 2200)

Displacement

mI (cu.in.)

3318 (202.5)

Starter

V - kW

12 - 3.0

Alternator

V - kW

12 - 0.96

Battery

V - A·h

12 - 90

: The maximum set speed in slow speed can be adjustable. Upon shipment, it is set to 8.0

min^-1 (8.0 rpm).

168

SPECIFICATIONS

Machine Dimensions

Units: mm (inches)

2-Peice Boom

Mono-Boom

6260 (246.4)

6320 (248.8)

2110 (83.1)

2925 (115.2) / 2970 (116.9) *

1720 (67.8)

1715 (67.5)

2100 (82.7)

2330 (91.7)

2300 (90.6)

515 (20.2)

335 (13.2)

2505 (98.6)

2620 (103.2)

1955 (77)

2060 (81.1)

2385 (93.8)

2495 (98.3)

690 (27.1)

730 (28.8)

1815 (171.5)

600 (23.6)

4380 (172.5)

4445 (174.9)

2895 (114.1)

2645 (104.2)

80°

50°

* : When equipped with Roof guard.

171

SPECIFICATIONS

Lifting Capacities

Rated lift capacity chart

The loads in the charts do not exceed 87% of hydraulic lift capacity or 75% of tipping

load.

Rated lift capacities limited by rated hydraulic lift capacity are identified by an asterisk(*)

The mass of slings and any auxiliary lifting devices shall be deducted from the rated load to

determine the net load that may be lifted.

The load point is the bucket hinge pin, and the bucket posture is with the standard bucket

completely retracted under the arm.

Units: daN (lbs.)

Load hooking system

A load hooking system with all of the following capacities must be provided and used.

1. A system which can withstand a weight of two times the rated lift capacity no matter at what

position the load is applied.

2. A system in which there is no risk of the lifted load falling from the hooking device, for example

one equipped with a hook slippage prevention device.

3. A system in which there is no risk of the hooking system slipping from the hoe

attachment.

Load safety device

In addition, the following load safety devices must be installed. (For details, contact a designated

service outlet.)

(1) An overload warning device.

(2) A boom lowering control device.

WARNING

DO NOT attempt to lift or hold any load that is greater than these rated values at their

specified load radii and height.

All rated lift capacities are based on the machine being level and on a firm supporting

surface. For safe working loads, the user is expected to make due allowance for the

particular job conditions such as soft or uneven ground, non-level condition, side

loads, hazardous conditions, experience of personnel, etc. The operator and other

personnel should fully acquaint themselves with the operator’s manual furnished

by the manufacturer before operating this machine, and rules for safe operation of

equipment shall be adhered to at all times.

Do not travel while lifting a load; It is very dangerous.

177

Over Rear; Dozer Blade Down

Over Rear; Dozer Blade Up

m ft

5096*

8.0

(26.2)

8.0

(26.2)

(11456*)

7.0

(23.0)

7.0

(23.0)

6.0

(19.7)

6.0

(19.7)

1866*

1760

(4194*)

(3957)

5.0

(16.4)

5.0

(16.4)

1647*

1771*

1184

1771*

1645*

(3702*)

(3981*)

(2662)

(3981*)

(3697*)

4.0

(13.1)

4.0

(13.1)

1521*

1681*

1922*

816

1177

1755

(3419*)

(3778*)

(4322*)

(1834)

(2646)

(3946)

3.0

(9.8)

3.0

(9.8)

1541*

1813*

2246*

809

1136

1663

(3464*)

(4075*)

(5050*)

(1820)

(2554)

(3739)

2.0

(6.6)

2.0

(6.6)

1581*

1964*

2607*

642

786

1079

1542

1335*

(3555*)

(4414*)

(5860*)

(1443)(1766)

(2426)

(3467)

(3001*)

1.0

(3.3)

1.0

(3.3)

1577*

2046*

2800*

761

1026

1442

(3544*)

(4600*)

(6295*)

(1711)

(2307)

(3241)

1453*

1986*

2722*

2525*

747

994

1390

2157

(3266*)

(4465*)

(6119*)

(5676*)

(1680)

(2234)

(3125)

(4848)

-1.0

(-3.3)

-1.0

(-3.3)

1719*

2371*

3256*

2286*

988

1383

2175

2286*

(3865*)

(5330*)

(7320*)

(5139*)

(2221)

(3108)

(4889)

(5139*)

-2.0

(-6.6)

-2.0

(-6.6)

1069*

1703*

2271*

1020

1414

2233

(2403*)

(3828*)

(5105*)

(2294)

(3180)

(5021)

-3.0

(-9.8)

-3.0

(-9.8)

-4.0

(-13.1)

-4.0

(-13.1)

7.0

6.0

5.0

4.0

3.0

2.0

1.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

(23.0)

(19.7)

(16.4)

(13.1)

(9.8)

(6.6)

(3.3)

(23.0)

(19.7)

(16.4)

(13.1)

(9.8)

(6.6)

(3.3)

units : daN (lbs.)

m ft

5096*

8.0

(26.2)

8.0

(26.2)

(11456*)

7.0

(23.0)

7.0

(23.0)

6.0

(19.7)

6.0

(19.7)

1866*

1543

(4194*)

(3470)

5.0

(16.4)

5.0

(16.4)

1540

1771*

1026

1575

(3463)

(3981*)

1645*

(2307)

(3540)

1645*

(3697*)

4.0

(13.1)

4.0

(13.1)

1084

1533

1922*

692

1019

1538

(2436)

(3447)

(4322*)

(1555)

(2291)

(3458)

3.0

(9.8)

3.0

(9.8)

1077

1490

2178

686

978

1448

(2421)

(3349)

(4897)

(1541)

(2200)

(3254)

2.0

(6.6)

2.0

(6.6)

1052

1430

2049

662

922

1328

873

533

(2365)

(3215)

(4606)

(1488)

(2073)

(2986)

(1962)

(1198)

1.0

(3.3)

1.0

(3.3)

1027

1375

1941

637

870

1229

(2308)

(3090)

(4364)

(1433)

(1956)

(2763)

1012

1340

1886

2525*

624

838

1178

1828

(2276)

(3013)

(4240)

(5676*)

(1402)

(1883)

(2648)

(4110)

-1.0

(-3.3)

-1.0

(-3.3)

1334

1878

3024

2286*

832

1171

1846

2286*

(2999)

(4222)

(6798)

(5139*)

(1870)

(2632)

(4150)

(5139*)

-2.0

(-6.6)

-2.0

(-6.6)

1069*

1703*

2271*

864

1202

1903

(2403*)

(3828*)

(5105*)

(1942)

(2703)

(4279)

-3.0

(-9.8)

-3.0

(-9.8)

-4.0

(-13.1)

-4.0

(-13.1)

7.0

6.0

5.0

4.0

3.0

2.0

1.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

(23.0)

(19.7)

(16.4)

(13.1)

(9.8)

(6.6)

(3.3)

(23.0)

(19.7)

(16.4)

(13.1)

(9.8)

(6.6)

(3.3)

units : daN (lbs.)

Over Rear; Dozer Blade Down

Over Rear; Dozer Blade Up

1355*

m ft

1355*

m ft

(3047*)

6.0

(19.7)

6.0

(19.7)

5.0

(16.4)

5.0

(16.4)

4.0

(13.1)

4.0

(13.1)

1340*

1241

(3013*)

(2791)

3.0

(9.8)

3.0

(9.8)

1454*

1436*

1226

1436*

(3268*)

(3229*)

(2757)

(3229*)

2.0

(6.6)

2.0

(6.6)

1699*

1984*

2730*

1189

1710

2707

1261*

(3820*)

(4460*)

(6138*)

876

(2674)

(3844)

(6085)

(2834*)

(1969)

1.0

(3.3)

1.0

(3.3)

1964*

2532*

3948*

1147

1623

2513

(4415*)

(5693*)

(8876*)

(2579)

(3649)

(5649)

2138*

2881*

4481*

2717*

1993*

1115

1563

2418

2717*

1993*

(4807*)

(6477*)

(10073*)

(6107*)

(4481*)

(2508)

(3515)

(5437)

(6107*)

(4481*)

-1.0

(-3.3)

-1.0

(-3.3)

2079*

2929*

4450*

4578*

3385*

1107

1541

2398

4578*

3385*

(4674*)

(6585*)

(10003*)

(10291*)

(7611*)

(2489)

(3464)

(5390)

(10291*)

(7611*)

-2.0

(-6.6)

-2.0

(-6.6)

2488*

3856*

6930*

5199*

1563

2430

5005

5199*

(5593*)

(8669*)

(15580*)

(11689*)

(3514)

(5463)

(11251)

(11689*)

-3.0

(-9.8)

-3.0

(-9.8)

6.0

5.0

4.0

3.0

2.0

1.0

6.0

5.0

4.0

3.0

2.0

1.0

(19.7)

(16.4)

(13.1)

(9.8)

(6.6)

(3.3)

(19.7)

(16.4)

(13.1)

(9.8)

(6.6)

(3.3)

units : daN (lbs.)

Over Front

Over Side

1355*

m ft

(3047*)

6.0

(19.7)

6.0

(19.7)

5.0

(16.4)

5.0

(16.4)

4.0

(13.1)

4.0

(13.1)

1340*

1084

(3013*)

(2438)

3.0

(9.8)

3.0

(9.8)

1454*

1436*

1070

1436*

(3268*)

(3229*)

(2405)

(3229*)

2.0

(6.6)

2.0

(6.6)

1538

1984*

2730*

1033

1496

2731

1143

(3457)

(4460*)

(6138*)

751

(2322)

(3363)

(5330)

(2570)

(1688)

1.0

(3.3)

1.0

(3.3)

1493

2124

3381

991

1410

2180

(3357)

(4774)

(7600)

(2229)

(3170)

(4902)

1460

2060

3276

2717*

1993*

960

1351

2088

2717*

1993*

(3282)

(4631)

(7365)

(6107*)

(4481*)

(2158)

(3038)

(4694)

(6107*)

(4481*)

-1.0

(-3.3)

-1.0

(-3.3)

1451

2036

3253

4578*

3385*

952

1329

2068

4181

3385*

(3262)

(4577)

(7313)

(10291*)

(7611*)

(2139)

(2989)

(4648)

(9399)

(7611*)

-2.0

(-6.6)

-2.0

(-6.6)

2060

3289

6930*

5199*

1351

2099

4272

5199*

(4630)

(7394)

(15580*)

(11689*)

(3037)

(4720)

(9604)

(11689*)

-3.0

(-9.8)

-3.0

(-9.8)

6.0

5.0

4.0

3.0

2.0

1.0

6.0

5.0

4.0

3.0

2.0

1.0

(19.7)

(16.4)

(13.1)

(9.8)

(6.6)

(3.3)

(19.7)

(16.4)

(13.1)

(9.8)

(6.6)

(3.3)

units : daN (lbs.)

OPTIONS

General Precautions

Precautions on Safety

WARNING

Heed the following when removing or installing an attachment or option:

Consult with a Takeuchi before installing optional attachments.

Do not use attachments that have not been approved by Takeuchi. Doing so may

compromise safety or adversely affect the machine’s operation or service life.

Takeuchi will not be held responsible for any injuries, accidents or damage to products

caused by the use of a non-approved attachment.

Choose a flat, hard surface to perform the operations. Also make sure there is enough

light and good ventilation.

Clean the area, remove any articles that may get in the way or be dangerous, and

remove any spilt oil or grease.

When performing lifting operations, determine a person to lead the operations and

always follow that person’s instructions.

• Follow the leader’s instructions on operating methods and procedures.

• Determine a signal leader and heed this person’s signals.

When removing or installing the hoe attachment, place it in a stable position so that

it does not tip over.

Due to the risk of loads falling and/or hitting people, do not allow unauthorized

personnel in the work area.

Use the crane to carry heavy objects (25 kg (55 lb.) or greater).

When removing heavy parts, be sure to prop them up before removing them. When

lifting them with a crane, be careful to balance them properly.

Operating with loads suspended with the crane is dangerous. Place loads on a stand

and check for safety.

When attaching the boom or arm, failure to follow proper procedures could result in

serious damage. Consult with a Takeuchi dealer beforehand.

Precautions on Installing Attachments

After replacing optional attachments or other special attachments, test-run them, then inspect

the hydraulic oil level and add oil if necessary.

In addition, consult with a Takeuchi dealer for details of removal and installation procedures.

184

OPTIONS

General Precautions

Precautions on Operating Attachments

WARNING

Long attachments reduce machine stability. When traveling down steep slopes or

slewing on slopes, the machine may loose its balance and tip over.

The following operations are particularly dangerous. Do not perform them.

Traveling down slopes

Traveling across slopes

Slewing on slopes

with the attachment lifted

W2L006

W2L004

W2L005

When heavy attachments are installed, the overslew (the distance from where the

operation to stop slewing is performed until slewing stops completely) increases and

mistakes in judgment may result in the attachment hitting surrounding objects. Allow

for plenty of room between the attachment and obstacles.

In addition, the natural drop (the gradual dropping of the attachment under its own

weight when it is stopped in midair) also increases when heavy attachments are

installed.

The machine can tip over more easily in the lateral direction than in the longitudinal

direction.

• Do not slew (swing) sideways with excessive weight at the front. In particular do not

slew sideways on slopes.

• The front is heavier for machines equipped with breakers, crushers or telescopic

arms than for machines equipped with the standard bucket. Do not operate such

machines sideways, especially with the digging arm (boom) downhill.

When a long arm or a telescopic arm is installed, the operating range suddenly

increases and mistakes in judgment may result in the attachment hitting surrounding

objects. Allow for plenty of room between the attachment and obstacles.

185

OPTIONS

Biodegradable Oil

Biodegradable oil

Biodegradable oil is a new type of hydraulic oil that is decomposed into carbon dioxide and

water by microorganisms in the soil and water. It is highly safe for living organisms and offers

advantages in terms of environmental protection.

Recommended biodegradable oil: Mobile EAL Envirosyn 46H (an ester synthetic oil).

When replacing the hydraulic oil with biodegradable oil, use the above or an equivalent oil.

Note that other oils, even other brands of ester synthetic oils, may damage O-rings, packings

and seals. Takeuchi products shipped with the optional biodegradable oil are shipped with

the above brand of oil.

When switching from a mineral oil to a biodegradable oil, the parking brake torque decreases

by about 30%.

Replacing the hydraulic oil with biodegradable oil

Mixing mineral oil with biodegradable oil will result in a decrease of the hydraulic oil’s performance

as well as a decrease in biodegradability and safety. The hydraulic oil system must be flushed

as described below before supplying the biodegradable oil. This operation is dangerous and

requires experience. Have it performed by a Takeuchi sales or service outlet.

Flushing

To be performed by a Takeuchi sales or service outlet

1. Drain the hydraulic oil (mineral oil) from the hydraulic tank and clean the inside of the tank

and suction strainer.

(Refer to the section on replacing the hydraulic oil and cleaning the

suction strainer.)

2. Remove the cylinder hoses and drain the hydraulic oil (mineral oil) from inside the

cylinders.

3. Supply new biodegradable oil to the hydraulic tank.

4. Bleed the air from the hydraulic pump, control valve, slew motor and cylinders.

5. Operate the hydraulic devices for 30 minutes.

6. Drain the biodegradable oil from the tank and cylinders.

7. Replace the hydraulic oil return filter with a new filter.

8. Repeat steps 3 and 4.

9. Operate the hydraulic devices for 30 minutes.

10. Drain the biodegradable oil from the tank and cylinders.

11. Repeat steps 3 and 4.

12. Operate the hydraulic devices for 1 hour.

13. Drain the biodegradable oil from the tank and cylinders.

14. Replace the return filter with a new filter.

15. Repeat steps 3 and 4.

16. Operate the hydraulic devices, then check for oil leakage.

There is no need to flush the hydraulic oil system when switching from biodegradable to

mineral hydraulic oil.

187

OPTIONS

Second Auxiliary Hydraulics

c. Stop the engine and wait for more than

Second Auxiliary Hydraulic Lines

5 minutes until bubbles escape from the

hydraulic oil in the tank.

WARNING

Oil may spurt out if caps or filters are

IMPORTANT: Follow the procedures for

removed or pipes disconnected before

purging air as instructed by the attachment

releasing the pressure in the hydraulic

manufacturer if specified to do so.

system.

When disconnecting hoses, release the

6. Check for leaks.

internal pressure before removing.

These lines deliver the hydraulic oil necessary

for operating a hydraulic attachment.

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 (c) and (d).

4. Open the stop valves.

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.

188

OPTIONS

Second Auxiliary Hydraulics

Second Auxiliary Hydraulic Switch

(Proportional control)

W2B019

Move this switch to control

the flow of the oil

in the second auxiliary hydraulic lines.

(C)

Hydraulic oil flows to left auxiliary

line(c)

(D)

Hydraulic oil flows

to right auxiliary

line(d)

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 (c) and

(d).

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. Stop the engine.

2. Turn the starter switch to the ON

position.

3. Fully lower the safety lock lever.

4. Within 10 minutes after the engine comes

to a complete stop, move the 2nd auxiliary

hydraulic switch to the right and left several

times.

5. Raise the safety lock lever to the lock

position.

189

OPTIONS

Third Auxiliary Hydraulics

IMPORTANT: Follow the procedures for

Third Auxiliary Hydraulic Lines

purging air as instructed by the attachment

manufacturer if specified to do so.

WARNING

Oil may spurt out if caps or filters are

5. Check for leaks.

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 quick attachment.

Connecting the Hydraulic Circuits

To connect the attachment hydraulic lines,

use the following procedures:

1. Release the pressure remaining in the

lines.

Refer to

“Releasing the residual

pressure”.

2. Remove the plugs.

3. Connect the attachment hydraulic lines to

ports (e) and (f).

4. 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.

190

OPTIONS

Third Auxiliary Hydraulics

Third Auxiliary Hydraulic Switch

Third Auxiliary Hydraulics Warning

and Button

Lamp

W2B020

L7L010

Press those switch and button to control the

This lamp illuminates and an alarm sounds

flow of the oil in the third auxiliary hydraulic

when the third auxiliary hydraulic pressure

lines.

drops abnormally while the engine is

When the safety lock lever is released after

running.

the engine is started, hydraulic oil constantly

flows in pipe (e). When button (1) and switch

(2) are pressed simultaneously, the oil flow

switches to pipe (f). When this happens,

the pressure of pipe (e) drops, an alarm is

sounded and the warning lamp lights. For

safety, only operates when both button (1)

and switch (2) are pressed.

Disconnecting the hydraulic circuits

1. Release the pressure remaining in the

lines.

Refer to

“Releasing the residual

pressure”.

2. Disconnect the lines from ports (e) and

(f).

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. Stop the engine.

(The residual pressure is released from the

(e) port line.)

191

OPTIONS

Fourth Auxiliary Hydraulics

IMPORTANT: Follow the procedures for

Fourth Auxiliary Hydraulic Lines

purging air as instructed by the attachment

manufacturer if specified to do so.

WARNING

Oil may spurt out if caps or filters are

5. Check for leaks.

removed or pipes disconnected before

releasing the pressure in the hydraulic

system.

When disconnecting hoses, release the

Selector Button (2 or 4 Aux.)

internal pressure before removing.

These lines deliver the hydraulic oil necessary

for operating a hydraulic attachment.

L7L020

This button changes from the fourth auxiliary

hydraulics operation to the second auxiliary

hydraulics operation.

Press this button to change over to operation

Connecting the Hydraulic Circuits

of the second auxiliary hydraulics. The second

To connect the attachment hydraulic lines,

auxiliary hydraulics operation indicator lamp

use the following procedures :

will light. One more press of this button will

1. Release the pressure remaining in the

result in a return to fourth auxiliary hydraulics

lines.

operation. Actual operation is performed with

Refer to

“Releasing the residual

the second / fourth auxiliary hydraulic switch

pressure”.

(slider switch).

2. Remove the plugs.

3. Connect the attachment hydraulic lines to

ports (g) and (h).

4. 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.

192

OPTIONS

Fourth Auxiliary Hydraulics

b. Move the second / fourth auxiliary

Second / Fourth Auxiliary

hydraulic switch to the right and left

Hydraulic Switch

several times.

5. Raise the safety lock lever to the lock

position.

Selector Button (2-Piece boom)

Move this switch to control the flow of the oil

WARNING

in the fourth auxiliary hydraulic lines.

Pressing (switching ON or OFF) the

selector button while the boom swing

(G)

Hydraulic oil flows to left auxiliary line(g)

pedal is depressed is dangerous, since the

(H)

Hydraulic oil flows to right auxiliary line(h)

attachment will move unexpectedly.

Always set the boom swing pedal back to

When the safety lock lever is set to the lock

the neutral position before operating the

position, this control is locked.

selector button.

Disconnecting the hydraulic circuits

1. Release the pressure remaining in the

lines.

Refer to

“Releasing the residual

pressure”.

2. Disconnect the lines from ports (g) and (h).

3. Install the plugs.

Releasing the residual pressure

W3L010

After using the auxilliary hydraulic circuits,

This button changes from the boom

pressure remains in the circuits. This is called

swing operation to the intermediate boom

the residual pressure. Release this residual

operation.

pressure before disconnecting the lines.

While the button is pressed and held in,

1. Stop the engine.

operation changes from the boom swing

2. Turn the starter switch to the ON

operation to the intermediate boom operation

position.

and the intermediate boom operation indicator

3. Fully lower the safety lock lever.

lamp lights. When the finger is released from

4. Within 10 minutes after the engine comes

the button, operation switches back to

to a complete stop, move the second /

boom swing operation. Actual operation is

fourth auxiliary hydraulic switch to the right

performed with the boom swing pedal.

and left several times.

Operation of the first auxiliary hydraulic switch

a. Press the selector button (2nd or 4th

push button: left side (A’) only.

Aux.) to change over to operation of the

second auxiliary hydraulics.

193

OPTIONS

Hydraulic Breaker

For handling of the breaker, read the hydraulic

breaker’s manual, provided separately.

IMPORTANT: When mounting devices,

select devices suited for this machine.

For advice on selecting device, contact a

Takeuchi sales or service outlet.

Do not pry with the chisel, and do not pry

while pounding.

Do not move the chisel while pounding.

Do not pound continuously for over 30

Precautions on Operating

seconds on the same surface.

Run the engine with 75% the maximum

Do not pound with the cylinder fully

speed.

extended or contracted (at the stroke end).

Leave a margin of at least 5 cm.

Pressing force

Pound with the chisel perpendicular to the

surface you are pounding.

Do not pound with the arm perpendicular

When pounding, press the chisel properly

to the ground surface.

against the object to be broken so as to

avoid pounding the air.

194

OPTIONS

Hydraulic Breaker

Replace the hydraulic oil

regularly!

When using a hydraulic breaker, the oil

deteriorates quicker than during normal

digging. Be sure to replace the hydraulic oil

and return filter element.

Failure to replace these in time can lead

to damage to the machine and breaker’s

Do not drop the breaker itself on the object

hydraulic systems. In order to improve the

to be broken in order to break it.

service life of the hydraulic systems, be

Do not move objects to be broken or rocks

sure to replace the hydraulic oil and return

with the breaker itself.

filter element after the number of hours

Slew occasionally to cool the engine.

shown on the diagram below.

If a hydraulic hose is vibrating abnormally,

Clean the suction strainer when changing

nitrogen gas may be leaking from the

the return filter element.

accumulator. Have an inspection as soon

as possible.

Replacement Interval (Hours)

Item

Hydraulic Oil

Filter Element

1st time

2nd time

100

Periodically

600

200

When the breaker operating ratio is 100%

2000

Replacement interval

for hydraulic oil

1500

1000

Replacement

interval for filter element

500

100

Breaker operating ratio (%)

N0G036

195

OPTIONS

Load Safety Device

The load safety devices include an emergency

Intermediate Boom (2-Piece boom)

shut-off valve and an overload warning

device. The emergency shut-off valve stops

the boom, intermediate boom or arm part

way through a fall. The overload warning

device sounds an alarm when an excessive

load is applied.

Emergency shut-off valve

If the emergency shut-off valve (1), (2) or (3)

When the hose of the boom, intermediate

is activated, immediately set the operating

boom or arm cylinders are ruptured and the

levers or swing pedal to the neutral position.

boom, intermediate boom or arm falls, the

Do not move the operating levers or swing

emergency shut-off valve is activated and

pedal to the boom, intermediate boom or arm

stops the boom, intermediate boom or arm

lowering side. Contact a Takeuchi dealer for

part way through the fall.

maintenance.

If the engine can be started, the boom,

WARNING

intermediate boom or arm can be lowered

If the boom, intermediate boom or arm

with the operating lever or swing pedal.

drops and the emergency shut-off valves

Check for safety, then slowly lower the boom,

are activated, immediately move away

intermediate boom or arm.

from the suspended object.

If the engine cannot be started, the boom,

intermediate boom or arm can be lowered

Boom

using the procedure described below.

W2L008

Arm

1. Check for safety in the working area and for

stability of the machine and lifted load.

2. Remove the cap (4).

3. Loosen the lock nut (5).

4. Tighten the stem (6) to lower the boom.

5. Check for stability of the hoe attachment

and load.

6. Loosen the stem (6) secure it with the lock

nut (5).

196

OPTIONS

Load Safety Device

Overload Warning Device

If a weight greater than the machine is

designed to lift is lifted, the overload warning

device is activated and a horn is sounded

(when the overload warning switch is turned

on).

WARNING

Continuing to apply the load after the

overload warning horn sounds could

result in the machine tipping over or the

emergency shut-off valve being activated.

If the horn sounds, stop operating the

machine and lighten the load.

L3L0061

Overload warning switch (2)

O position

OFF

I position

When the emergency shut-off valve is

activated, the overload warning horn stops.

(This is because the pressure sensor can no

longer detect hydraulic pressure.)

197

OPTIONS

Fuel Supply Pump

This device automatically supplies fuel to the

fuel tank and stops automatically when the

fuel tank is full.

DANGER

Do not use the fuel supply pump for

gasoline or hydraulic oil. Doing so could

result in explosion or damage.

Only use the fuel supply pump for diesel

fuel.

L3L013

1. Open the front cover.

2. Insert the pump’s nozzle (1) in the fuel

supply tank.

3. Press the switch (2).

The pump stops automatically once the

fuel tank is full.

198

OPTIONS

Outrigger

WARNING

Provide firm uniform supporting surface

for outrigger pads.

W2L0022

Depress the axle lock switch to change into

the outrigger operation.

LOCK

Outrigger operation

(The suspension lock is

engaged)

Neutral

Dozer blade operation

(The suspension lock is

disengaged)

............ Dozer blade operation

AUTO

(When the suspension lock is

disengaged)

W2B031

The outrigger operation is

done by the blade

lever.

(A)

Outriggers Raise

(B)

Outriggers Lower

199

OPTIONS

Air Conditioner

CAUTIONS ON USE

Do not overcool

For health purposes, the air inside the cab

Ventilate periodically

should be kept at a temperature at which

When using the air conditioner over an

you feel a little cool when entering the cab

extended period of time, open the windows

from outside (a difference of 5 to 6°C (41 to

about once each hour to let in fresh air.

43°F)). Be careful to adjust the temperature

Your eyes may become irritated if you

properly.

smoke while using the air conditioner. If

this happens, open the windows to let

in fresh air. Cigarette smoke particularly

Do not turn the air conditioner on

irritates the eyes when using the air

until the engine is started

conditioner because the humidity in the

To avoid placing an excessive load on the

cabin drops and the eyes’ membranes

compressor, wait until the engine is started

tend to become dry.

and is running smoothly before turning on

If the outside air is dirty, set the air

the air conditioner.

conditioner to the recirculation mode.

Let hot air out first

Always maintain good visibility

If the excavator has been parked in the sun,

Working with the windows dirty or fogged

open the windows or door to let the hot air out

restricts visibility and is dangerous. Always

of the cab before using the air conditioner.

clean dirt and moisture off the windows

before working.

The windows tends to get foggy when the

humidity is high. If this happens, turn on the

Caution on refrigerant (gas)

air conditioner and use outside air and the

defroster to get rid of the fog.

Exposure of the eyes or hands to the cooler’s

If the air conditioner is set to high when

refrigerant could result in blindness or

using the defroster, the difference between

frostbite. Never touch the refrigerant or loosen

the external and internal temperatures

the parts of the cooling circuit.

increases, and fog may form on the

Should the refrigerant gas leak, keep flames

outside of the windows. If this happens,

away.

either turn the air conditioner off or turn

the temperature control dial clockwise to

increase the internal temperature.

Mist may blow out of the air outlets. This

is not a malfunction. When moist air

passes through the air conditioner unit’s

evaporator, water particles in the air freeze

and are emitted as mist.

200

Takeuchi Hydraulic Excavator TB175W (No. 175400095~). Operator's Manual - page 5