Takeuchi compact excavator TB108 (Serial No. 10820001~). Operators Manual

MAINTENANCE

Long-term Storage

Procedures for storage

During storage

If the machine is to be stored for 30 days or

more, store it indoors. If it must be stored

WARNING

outdoors, stop it on wood laid out on a flat

¡Do not operate the engine in an

surface and place a waterproof cover over it

enclosed area without adequate

so that it stays dry.

ventilation.

1. Clean the machine.

¡If natural ventilation is poor, install

2. Inspect for oil leakage, water leakage and

ventilators, fans, exhaust extension

loose nuts and bolts.

pipes or other artificial venting devices.

3. Add fuel and replace the hydraulic oil and

oil.

1. To prevent rusting, operate the machine

4. To prevent rusting and freezing, replace

once a month so that the oil is fully

the engine coolant with long-life coolant

circulated.

(LLC).

2. Inspect the battery and recharge it if

Refer to page 114 “Cleaning the Engine

necessary.

Cooling System”.

Have the battery charged by a Takeuchi

5. Use the grease gun to supply grease to

sales or service outlet.

the grease nipples.

6. Fully contract the bucket and arm cylinders

Starting the machine after storage

and ground the bucket and dozer blade.

7. Apply rust-prevention oil to the hydraulic

IMPORTANT: If the “Procedures for

cylinder rods.

storage” have not been performed and

8. Disconnect the cable from the battery’s “-”

the machine has been stored for a long

terminal and cover the battery to prevent

period of time, consult a Takeuchi sales

freezing.

or service outlet before reusing the

machine.

1. Wipe off the rust-prevention oil that was

applied to the hydraulic oil cylinders’ piston

rods.

2. Add fuel, oil and grease to all parts.

124

TROUBLESHOOTING

Symptoms that are not Malfunctions

The following symptoms are not malfunctions:

E4J001

¡ When the arm reaches the vertical position

while contracting it while the engine is

running at low speed, the contracting

speed slows down momentarily.

E4J002

¡When the bucket teeth reach the

horizontal position while the engine is

running at low speed, the speed of bucket

movement slows down momentarily.

¡ The slew motor produces noise at the

beginning and end of the slewing

operation.

¡ The travel motor produces noise when

stopped suddenly during high speed

travel.

¡The control valve produces noise if

excessive force is applied to the working

equipment and when the stroke end is

reached.

¡Performance decreases when an

attachment weighing more than a

standard arm or bucket is mounted.

126

TROUBLESHOOTING

If the Engine Overheats

Procedure

WARNING

1. Park the machine in a safe place.

2. With the engine hood closed, inspect

¡ Do not open the engine hood when

whether steam is coming from the engine

there is steam coming from the engine

room.

room. The steam or hot water may

3. If there is steam, stop the engine

spurt out, resulting in burns.

immediately and contact a Takeuchi sales

¡ Do not remove the radiator cap or drain

or service outlet for repairs.

plugs when the coolant is hot. Stop the

If there is no steam, run the engine at low

engine, let the engine and radiator cool

idle and let the water temperature

and loosen the radiator cap or drain

decrease.

plugs slowly.

4. Once the water temperature gauge drops

¡ Stop the engine and allow the machine

to the green zone, stop the engine.

to cool down before performing

5. Once the engine is cool, perform the

inspection and maintenance.

following inspections and procedures:

¡ Fan belt slack

Adjust.

The following symptoms indicate overheating:

Refer to page 104.

HOURS

¡ Coolant level

Add.

1/10

Refer to page 97.

¡ Water leakage

Repair.

¡ Radiator fins

Clean.

°C

Refer to page 112.

¡ Sediment in cooling system

Clean.

Refer to page 114.

B5J0011

If the problem persists after the above

procedures are taken, contact a Takeuchi

¡ The water temperature gauge is in the red

sales or service outlet for repairs.

zone.

¡The engine slows down and the force

decreases.

¡ Steam comes from the engine room.

127

TROUBLESHOOTING

If the Battery Goes Dead

The following symptoms indicate that the

Connecting the jumper cables

battery is dead:

¡ The starter motor does not turn or turns

IMPORTANT: Set the starter keys of both

weakly, and the engine does not start.

the rescue vehicle and problem vehicle

¡ The horn is weak.

to the OFF position.

Procedure

Rescue vehicle battery Problem vehicle battery

Use jumper cables and start the engine using

the rescue vehicle’s battery.

WARNING

¡Use jumper cables only in the

To engine block

recommended manner. Improper use

E4J005

of jumper cables can result in battery

explosion or unexpected machine

1. Connect the clip of jumper cable (R) to

motion.

the problem vehicle’s “+” terminal.

• Do not let the problem vehicle and

2. Connect the other clip of jumper cable (R)

rescue vehicle touch each other.

to the rescue vehicle’s “+” terminal.

• Do not let the “+” and “-” clips of the

3. Connect the clip of jumper cable (B) to

jumper cables touch each other.

the rescue vehicle’s “-” terminal.

• Connect the jumper cables to the “+”

4. Connect the other clip of jumper cable (B)

terminals first, and disconnect them

to the problem vehicle’s engine block.

from the “-” terminals (ground) first.

Connect the clip as far from the battery as

• Connect the final clip of the jumper

possible.

cable to a point as far away from the

battery as possible.

Starting the engine

¡ Use safety glasses when using jumper

1. Check that the clips are securely

cables to start the machine.

connected to the terminals.

2. Start the rescue vehicle’s engine and run

IMPORTANT: Use jumper cables and

it at high speed.

clips of a size suited to the battery’s

3. Start the problem vehicle’s engine.

capacity. Do not used damaged or

corroded jumper cables and clips.

IMPORTANT: The rescue vehicle’s

battery must have the same capacity as

the problem vehicle’s battery.

IMPORTANT: Connect the clips securely.

128

TROUBLESHOOTING

If the Battery Goes Dead

After the Fuel Runs Out

Disconnecting the jumper cables

Bleeding the Air from the Fuel

Once the engine starts, disconnect the

System

jumper cables following the connection

procedure in reverse order.

1. Add fuel.

2. Open the water separator and fuel filter

cocks.

Rescue vehicle battery Problem vehicle battery

PREHEAT

^OFF ON

START

From engine block

E4J006

1. Disconnect the clip of jumper cable (B)

E4D002

from the problem vehicle’s engine block.

2. Disconnect the other clip of jumper cable

3. Turn the starter key to the ON position and

(B) from the rescue vehicle’s “-” terminal.

hold it there for about 20 seconds.

3. Disconnect the clip of jumper cable (R)

The automatic air bleeder bleeds the air

from the rescue vehicle’s “+” terminal.

from the fuel system.

4. Disconnect the other clip of jumper cable

4. Start the engine and inspect for fuel

(R) from the problem vehicle’s “+” terminal.

leakage.

Recharging

Supplement: Air in the fuel system can

Have a Takeuchi sales or service outlet

make it difficult to start the engine and cause

recharge batteries that have gone dead.

engine problems. Also bleed the air when

the fuel tank is emptied.

129

TROUBLESHOOTING

If a Fuse Blows

If a light does not turn on or the electric

Fuse Layout and Circuits Protected

system does not operate, a fuse may be

Capacity

Protected circuit

blown. Inspect the fuses.

10A

Horn

10A

Water temperature gauge

Inspecting and Replacing the

10A

Boom light

Fuse

30A

Stop solenoid

WARNING

If the fuse blows as soon as it is replaced,

there is a problem with the electric

system. Continued use may lead to fire.

Consult a Takeuchi sales or service

outlet.

1. Turn the starter key to the OFF position to

stop the engine.

Inspecting the Fusible Link

B5J004

B5J005

2. Open the fuse box (1) and inspect for any

blown fuses.

If the electric power is not switched on after

turning the starter switch to the ON position,

the cartridge type fusible link (2) might be

blown open. Open the engine hood and

Blown

Normal

inspect. If the fusible link is blown, please

contact a Takeuchi sales or service.

Supplement: A fusible link is a large piece

of fuse wiring which is mounted in a circuit

which carries a large electrical current. Link

E4J007

a regular fuse, the fusible link protects the

3. If a fuse is blown, replace it with a fuse of

electrical parts and wiring from damage due

the same capacity.

to abnormally large currents.

130

TROUBLESHOOTING

If a Warning Lamp is illuminated

If a warning lamp is illuminated during operation, park the machine in a safe place and perform

the procedures described below.

Warning lamp

Lamp name

Procedure

Battery charge

There is a problem with the fan belt or alternator.

warning lamp

Inspect the fan belt for slack or breakage and adjust as

necessary. If the lamp continues illuminating after

maintenance, there is a problem with the alternator.

Consult a Takeuchi sales or service outlet.

OSOB080

Refer to page 104 “Inspecting and Adjusting the Fan

Belt”.

Engine oil

Inspect the engine oil level. If the lamp is illuminating

pressure

even though the level is normal or if it continues

warning lamp

illuminating after oil is added, consult a Takeuchi sales

or service outlet.

Refer to page 98 “Inspecting and Replenishing the

Engine Oil”.

OSOB070

131

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

Hoe attachment,

¡ Safety lock lever is raised

¡ Lower the safety lock lever.

slewing or traveling

Refer to page 43.

operation not possible

Digging force is

¡ Insufficient hydraulic oil level

¡ Replenish to the prescribed

insufficient

level.

Refer to page 100.

¡ Hydraulic oil is not heated

¡ Perform the warm-up

procedure.

Refer to page 58.

¡ Air cleaner is clogged

¡ Clean the air cleaner.

Refer to page 111.

¡ Hydraulic oil is not of

¡ Replace the hydraulic oil.

suitable type

Refer to page 117.

Traveling is not

¡ Stones or foreign objects are

¡ Remove the foreign object.

possible or not smooth

stuck

Machine does not travel

¡ Stones or foreign objects are

¡ Remove the foreign object.

straight forward

stuck

¡ Faulty crawler tension

¡ Adjust the crawler to the

adjustment

prescribed tension.

Refer to page 105.

Slewing is not possible

¡ Insufficient grease on slew

¡Add grease.

or not smooth

bearing

Refer to page 106.

132

TROUBLESHOOTING

Other Symptoms

Symptom

Main cause

Procedure

Hydraulic oil

¡ Insufficient hydraulic oil

¡ Replenish to the prescribed

temperature is too high

level.

Refer to page 100.

Starter motor turns but

¡ Insufficient fuel

¡ Add fuel.

engine does not start

Refer to page 99.

¡ Air in fuel system

¡ Bleed the air.

Refer to page 129.

¡ Water in fuel system

¡ Drain the water.

Refer to page 108.

Crawlers slip off

¡ Crawlers are too loose

¡ Adjust the tension.

Refer to page 105.

Engine exhaust is white

¡ Excessive engine oil

¡ Adjust to the prescribed

or bluish

level.

Refer to page 98.

¡ Insufficient fuel

¡ Replace the fuel.

Engine exhaust is

¡ Air cleaner is clogged

¡ Clean the air cleaner.

occasionally black

Refer to page 111.

Irregular noise is

¡ Low quality fuel is being

¡ Replace the fuel.

produced from the

used

¡ If the Engine Overheats

engine (combustion or

¡ Engine is overheating

Refer to page 127.

mechanical noise)

¡ Replace the muffler.

¡ Damage in muffler

(Request at a sales or

service outlet.)

133

TROUBLESHOOTING

Towing

WARNING

When towing, selecting the wrong wire

rope, inspecting improperly, or towing in

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

the wire rope.

¡ Use safety gloves when handling the

wire rope.

¡ Make sure there is an operator on the

machine being towed as well as on the

machine that is towing.

¡ Never tow on slopes.

¡ Do not let anyone near the wire rope

while towing.

Towing the Machine

Use the procedure described below to tow

heavy objects or the machine itself if it should

get stuck in the mud and not be able to get

out on its own.

N0A006

1. Fasten the wire rope to the frame.

2. Place splints or other objects between the

wire rope and frame to prevent the

machine and wire rope from getting

damaged.

3. Move the machine to tauten the wire rope.

4. Move the machine slowly and tow.

134

SPECIFICATIONS

Main Specifications

TYPE

With CANOPY

CANOPY Less

MASS

Machine mass kg (lb.)

With rubber crawlers

855 (1880)

810 (1790)

(not including operator)

PERFORMANCE

Bucket capacity m³(cu.ft.)

Heaped

0.018

(0.64)

(standard bucket)

Struck

0.013

(0.46)

Slew speed min^-1 (rpm)

9.3

(9.3)

1st

2.0

(1.24)

Travel speed km/h (mph)

Rubber crawler

2nd

3.9

(2.42)

Gradeability (degrees)

Ground pressure

With rubber crawlers

25.1

(3.64)

23.8

(3.46)

kPa (psi)

Sound-power level

LWA 91

Noise level

dB(A)

Sound-pressure level

pA 80

ENGINE

Manufacturer and model

Yanmar 2TNV70-PTB diesel engine

Rated output

kW / min^-1 (hp / rpm)

7.1 / 2400 (9.6 / 2400)

Displacement

mI (cu.in.)

569 (34.7)

Starter

V - kW

12 - 1.0

Alternator

V - kW

12 - 0.18

Battery

V - Ah

12 - 34

137

SPECIFICATIONS

Machine Dimensions

Units: mm (inches)

Standard Arm

Long Arm

2710 (106.7)

2740 (107.9)

740 (29.1)

←

2110 (83.1) / 2195 (86.5)*

←

800 (31.5)

←

385 (15.2)

←

900 (35.4)

←

1220 (48.1)

←

900 (35.4)

←

180 (7.1)

←

160 (6.3)

←

790 (31)

825 (32.5)

440 (17.3)

←

340 (13.4)

←

900 (35.4)

←

1920 (75.6)

1955 (77)

740 (29)

←

200 (7.9)

←

90°

←

90°

←

1375 (54.1)

←

680 (26.8)

←

680 (26.8)

←

1080 (42.6)

1125 (44.3)

880 (34.6)

915 (36.1)

* Option: With Lift Eyes

139

SPECIFICATIONS

Operating Range

Units: mm (inches)

Item

Standard Arm

Long Arm

Max. digging radius

2825 (111.3)

2970 (116.9)

Max. ground digging radius

2730 (107.6)

2880 (113.4)

Max. digging depth

1530 (60.3)

1680 (66.1)

Max. vertical digging depth

1220 (48)

1370 (53.9)

Max. digging height

2860 (112.5)

2975 (117.1)

Max. dumping height

2030 (79.9)

2145 (84.4)

Min. dumping height

900 (35.4)

760 (29.9)

Max. vertical digging radius

1890 (74.3)

1915 (75.4)

Max. raising height

155 (6.1)

←

Max. lowering depth

120 (4.7)

←

141

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.

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.

143

OPTIONS

General Precautions

Precautions on Safety

WARNING

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

¡ Consult with a Takeuchi dealer before installing optional attachments.

¡ Do not use attachments that have not been approved by Takeuchi or a Takeuchi

dealer. 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.

150

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

OE3A2531

OE3A271

OE3A331

¡ 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.

151

OPTIONS

Canopy (When equipped with Lift eyes)

Lifting the Machine

Lifting posture

WARNING

¡ Know and use correct crane signals.

¡ Inspect the lifting equipment daily for

Lift Eye

damaged or missing parts.

¡ Keep all other persons out of the area

when lifting. Do not move the machine

over the heads of ther persons.

¡Do not lift the machine with an

operator(s) on it.

¡When lifting, use a wire rope with

sufficient strength with respect to the

machine’s weight.

¡ Do not lift with the machine in a posture

other than the one described in the

B5L004E

procedure below. Doing so is

dangerous as it may result in the

1. Park the machine on a level surface.

machine losing its balance.

2. Set the slew lock lever to the locked

position.

IMPORTANT: This lifting method applies

3. Fully extend the bucket, arm and boom

to machines with standard specifications.

cylinders.

4. Raise the dozer blade.

5. Set the safety lock lever securely to the

locked position.

6. Stop the engine and remove the starter

key.

7. Fix the sling to the lift eyes.

Lifting

1. Lift slowly until the machine just leaves

the ground.

2. Stop lifting until the machine is stable.

3. Lift slowly.

B5L003

When lifting this machine with a crane, use

a two leg sling with a 60 degree sling angle.

Each leg of the sling must have a minimum

length of 450mm(17.7 in.).

152

OPTIONS

Hydraulic Breaker

For handling of the breaker, read the

Precautions on Operating

hydraulic breaker’s manual, provided

separately.

WARNING

75%

Do not use a breaker with the crawler

width narrowed!

B5L001

¡ Run the engine with 75% the maximum

speed.

Pressing force

¡ Always operate the machine with the

crawler width at the maximum to

increase machine stability. The smaller

the crawler width, the greater the

possibility the machine can tip over.

IMPORTANT: When mounting devices,

¡ Pound with the chisel perpendicular to the

select devices suited for this machine.

surface you are pounding.

For advice on selecting device, contact a

¡ When pounding, press the chisel properly

Takeuchi sales or service outlet.

against the object to be broken so as to

avoid pounding the air.

¡ 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

seconds on the same surface.

153

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 pound with the cylinder fully

hydraulic systems. In order to improve

extended or contracted (at the stroke end).

the service life of the hydraulic systems,

Leave a margin of at least 5 cm.

be sure to replace the hydraulic oil and

return filter element after the number of

hours shown on the diagram below.

• Clean the suction strainer when

changing the return filter element.

Replacement Interval (Hours)

Item

Hydraulic Oil

Filter Element

1st time

¡ Do not pound with the arm perpendicular

2nd time

100

to the ground surface.

Periodically

600

200

When the breaker operating ratio is 100%

2000

Replacement interval

for hydraulic oil

1500

1000

¡ Do not drop the breaker itself on the object

Replacement

to be broken in order to break it.

interval for filter element

500

¡ Do not move objects to be broken or rocks

with the breaker itself.

¡ Slew occasionally to cool the engine.

100

¡ If a hydraulic hose is vibrating abnormally,

Breaker operating ratio (%)

N0G036

nitrogen gas may be leaking from the

accumulator. Have an inspection as soon

as possible.

154

OPTIONS

3-Holes Bucket

A B

Replacing the Bucket Teeth

Replace the bucket teeth when the tooth

points are worn, before the adapter is

damaged.

WARNING

OL1L170

¡Before performing maintenance or

repairs under the machine, set all

working equipment against the ground

or in the lowermost position.

¡ To prevent unexpected movement,

securely block the working elements

when repairing or replacing the bucket

teeth.

OL1L180

¡ Wear required appropriate equipment

such as safety glasses when using

The digging capacity increases when the

hammers, as metal fragments or other

bucket’s link arm installation position is

objects can fly and cause serious

switched from (A) to (B). However, this

personal injury.

shortens the bucket stroke.

¡ Do not allow unauthorized personnel

• Struck capacity (SAE) : 0.017 m³ (0.59 ft³)

in the work area.

• Rated capacity (SAE) : 0.021 m³ (0.73 ft³)

Removal

1. Clean the bucket and park the machine in

a flat, safe place where the ground is hard.

Changing the Link Arm

Installation Position

Refer to page 119 “Replacing the Bucket” in

the manual.

2. Set the bottom surface of the bucket flat

and lower it on a block so that the locking

pin (1) can be knocked out.

155

OPTIONS

3-Holes Bucket

3. Remove the key, then check that the

Installation

bucket is stable.

OL1L220

1. Clean the adapter nose (3).

OL1L200

If there is gravel or mud on the adapter

4. Place a rod against the locking pin (1) and

nose, the tooth point will not go in all the

knock the locking pin out by hammering

way and the pin cannot be driven in.

against the rod.

The rod should be round and thinner than

the locking pin.

OL1L230

2. Put the tooth point (2) in the adapter nose

(3).

OL1L210

Push in firmly until the tooth point (2)

5. Remove the tooth point (2).

touches the tip of the adapter nose (3).

Some tooth points (2) are of the type that

are removed by turning (twisting) them

are installed by turning (twisting) them

counterclockwise.

clockwise.

The same procedure can be used to

remove the other tooth points.

OL1L240

3. Insert the locking pin (1), making sure it is

in the right direction.

156

OPTIONS

Travel Alarm

An alarm is sounded when the machine

Fuse Layout and Circuits Protected

travels and stops when traveling is stopped.

Capacity

Protected circuit

If the alarm does not sound when the

machine travels, the fuse may be blown.

10A

Horn

Inspect the fuse.

10A

Water temperature gauge

10A

Boom light, Travel alarm

WARNING

30A

Stop solenoid

If the fuse which has just been replaced

should blow again, there is a problem in

the electrical system. This could cause

fires. Contact a Takeuchi sales or service

outlet.

B5J004

Blown

Normal

E4J007

1. Park the machine in a safe place.

2. Set the starter switch to OFF.

3. Open the fuse holder and inspect for blown

fuses.

4. If a fuse is blown, replace it with a spare

fuse of the same capacity.

158

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 page 117 “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 pump and cylinders and pressurize the hydraulic tank.

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.

159

OPTIONS

Seat Belt

Releasing the seat belt

CAUTION

Always fasten the seat belt securely

before starting the engine.

Fastening the seat belt

1. Adjust the seat to the optimum position

for operating, raise your torso, and sit back

firmly into the seat.

C4C012

1. To remove the seat belt, simply press the

button (D) located on the buckle. Once the

belt has been removed, reinsert the

tongue plate into the buckle so that seat

90°

belt remains in full view.

C4C010

2. Pull on adjuster (A) in the manner shown

in the diagram to adjust the seat belt to

the desired length.

C4C011

3. Make sure that the belt is not twisted and

then insert the tongue plate (B) into the

buckle (C) of the seat belt until you hear a

clicking sound as it locks in place.

4. Pull the belt until you can feel the pressure

on your pelvis with the belt firmly in place.

160

Takeuchi compact excavator TB108 (Serial No. 10820001~). Operators Manual - page 4