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

MAINTENANCE

General

Cautions on Maintenance

Do not perform inspection and maintenance
procedures not prescribed in this manual.
Have inspection and maintenance
procedures not prescribed in this manual
performed by a Takeuchi sales or service
outlet.

Always keep the machine clean.

Always keep the machine clean, and wash
it before performing inspection and
maintenance.

When washing the machine with water,
stop the engine and cover the electrical
system with plastic to protect it from water.
Exposing the electrical system to water is
dangerous and could result in short-
circuits or malfunction. Do not wash the
battery, sensors, connectors or the inside
of the cab with water or steam.

Fuel, lubricant and grease

For fuels, lubricant and grease, follow the
instructions on the “Fuel and Lubricant
Chart”.

Use pure fuels, lubricants and greases
which do not contain water, and be careful
to keep dirt out when changing or
replenishing fuel, lubricant or grease.

Store fuels, lubricants and greases in the
prescribed places and in such a way that
no water or dirt can get in them.

Cautions on fueling

If the port includes a strainer, do not
remove the strainer when fueling.

After fueling, be sure to securely tighten
the cap, etc.

Do not add more than the prescribed
amount of fuel.

Maintenance Description

For long-term use of the machine under good
conditions, perform the inspection and
maintenance procedures properly and safely
as recommended in this manual.

The inspection and maintenance items are
divided according to the machine’s total
operating time (inspection and maintenance
to be performed every 10 hours (walk-around
and daily inspection), every 50 hours, every
250 hours, etc.). Refer to the hour meter to
determine when it is time to perform
inspection and maintenance. Items for which
it is not possible to determine the inspection
and maintenance interval are included under
“When Required”.

When operating the machine in extremely
harsh environments (with high dust levels or
high temperatures), inspection and
maintenance should be performed earlier
than the times indicated on the Maintenance
Chart.

MAINTENANCE

Disposing of wastes

Collect spent fluids from the machine in
containers. Disposing of wastes
irresponsibly damages the environment.

Dispose of oil, fuel, cooling water, coolant,
filters, batteries and other harmful
substances as prescribed by law.

Check after maintenance

Gradually increase the engine speed from
a low idle to maximum speed and check
that there is no oil or water leaking from
serviced parts.

Operate all the operating levers and check
that the machine is operating properly.

Cautions on handling of battery cables

Disconnect the battery cables (+,-) before
working on the electrical system or doing
any welding.
Remove the negative (-) battery cable first.
When reconnecting the battery, connect
the negative (-) battery cable last.

Do not disconnect the battery cables while
the engine is running. Doing so could
damage the electronic circuitry of the
alternator and other parts.

Do not clean parts with fuel.
Do not use fuel to clean parts. Use a non-
combustible cleaning agent.

Keep dirt out.
When mounting and removing parts, do so
in a place where there is no dust, clean the
working area and the part, and keep dirt out.

Clean mounting surfaces.
When mounting and removing parts, be sure
that the surfaces of contact of the parts are
clean. If the sealing grooves of the surface
of contact are damaged, consult a Takeuchi
sales or service outlet.

Seals and split pins

Replace removed seals and split pins with
new ones.

When mounting, be careful not to damage
or twist the seal.

Sealing tape

When wrapping sealing tape around
plugs, etc., remove any old sealing tape
from the threads and clean the threads.

Wrap the sealing tape tight, leaving 1 or 2
threads at the tip free.

E4G001

Sealing tape

Leave 1 or 2 threads free

General

MAINTENANCE

Fuel and Lubricant Chart

Use different fuels, lubricants and greases according to the temperature, referring to the
chart below.

Change the lubricant earlier than as shown in the table if it is extremely dirty or its
performance has deteriorated severely.

Whenever possible, use the same brand of lubricant as before. If changing with a different
brand, replace the entire quantity – do not mix different brands.

: If the percentage of the traveling time within the total operating time is high, replace the

gear oil earlier than the specified time.

** : For water, use tap water (soft). Do not use well or river water.

When the ambient temperature drops below 0

C, supply coolant (antifreeze). Follow the

coolant manufacturer’s instructions to determine the mixture ratio.

*** : Serial No. 17514412 ~

Service Data

Part

Type

Type by temperature

-22 -4 14 32 50 68 86

104

-30 -20 -10 0

10 20 30 40

Replacement
interval

Capacity

Lit. (US. qt.)

Engine
oil pan

Diesel
engine oil
API-CD

After first 50 hrs.
Every 250 hrs.

Upper limit:
10.2 (10.8)

Lower limit:
5.7 (6)

System:
132
(34.9 US.gal.)

Tank:
68 (18 US.gal.)

Hydraulic
tank

Antiwear
hydraulic oil
(Option:
Biodegradable
oil)

Every 2000 hrs.

Use a clean, Quality fuel for good performance and optimum engine life.

To prevent fuel flow problems in cold weather, use diesel fuel with a pour point of
at least -12

C (10

F) below the lowest expected ambient temperature.

Minimum cetane number is 45. Low temperature or high altitude operation may
require the use of fuel with a higher cetane number.

Fuel tank

Diesel fuel

120
(31.7 US.gal.)

Engine
cooling
system

Coolant
(water +
coolant)**

Every 1000 hrs.

9.5 (10)
11.2 (11.8)***

SAE 5W-20
SAE 10W-30
SAE 15W-40

Travel
reduction
gear

Gear oil
API-GL-4

SAE 90

After first 250 hrs.*
Every 1000 hrs.

Slew
bearing

Working
equipment

Levers

Lithium
based
grease
EP-2
NLGI No. 2

Every 50 hrs.

Daily or every
10 hrs.

When required

As
required

1.5 (1.6)

ISO VG32

ISO VG46

ISO VG68

50% coolant mixture

30% coolant mixture

MAINTENANCE

Expendables

Replace expendables such as filters and elements periodically, referring to the table below.

Service Data

Item

Part name

Part No.

Replacement interval

Hydraulic oil return
filter

Element

After first 50 hrs.
Every 500 hrs.

15511-02600

Fuel filter

Every 500 hrs.

Cartridge

119802-55800

After first 50 hrs.
Every 250 hrs.

129150-35152

Engine oil filter

Cartridge

Every 1000 hrs. or
after 6 cleanings
(whichever comes
first)

Air cleaner

Outer Element

129062-12560

Air breather filter

Every 1000 hrs.

Element

15520-00902

Water separator filter

Cartridge

129901-55850

Every 1000 hrs. or
after 3 cleanings of
the outer element
(whichever comes
first)

Inner Element

119005-12571

Replace the hydraulic oil regularly!

Replacement Interval (Hours)

Item

Hydraulic Oil Filter Element

1st time

2nd time

100

Periodically

600

200

When the breaker operating ratio is 100%
Refer to page 193 “Hydraulic Breaker”.

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
hydraulic systems. In order to improve the
service life of the hydraulic systems, be
sure to replace the hydraulic oil and return
filter element according to the following
chart of the replacement interval.

Clean the suction strainer when changing
the return filter element.

100

MAINTENANCE

Tools

Service Data

Spanner

16901-00041

Hex. wrench

16906-00250

2.5mm

Hex. wrench

16906-00500

5mm

Hex. wrench

16906-00600

6mm

Hex. wrench

16906-00800

8mm

Hex. wrench

16906-01000

10mm

Hex. wrench

16906-01200

12mm

Tool case

16914-00001

Case

16919-00001

Grease gun

16910-60600

600cc

Drain connector 15545-12601

No.

Part name

Part No.

Remarks

Part name

No.

Part No.

Remarks

Spanner

19100-47081

10-12

Spanner

19100-47082

14-17

Screwdriver

19100-06112

(+) (–)

Filter wrench 19100-65081

Hammer

16903-00330

3/4

Monkey wrench 16904-00250

250mm

Pliers

16905-00200

200mm

Spanner

16900-01013

10-13

Spanner

16900-01922

19-22

Spanner

16900-02427

24-27

Spanner

16900-02730

27-30

Spanner

16900-03236

32-36

101

MAINTENANCE

Service Data

Tightening Torques

Nuts and Bolts (for ISO strength category 10.9)
Tighten nuts and bolts at the torques shown on the table below, unless otherwise specified in
the text.

Tightening torques when mounting plastic covers differ from the values on the table below.
Consult a Takeuchi sales or service outlet. Tightening too strongly will break the cover.

When replacing nuts and bolts, replace them with nuts and bolts of the same size and
standards.

Tighten nuts and bolts alternately (top, bottom, left then right) or in 2 or 3 times so that they
are tightened uniformly.

E4G003

Thread

Head width

(b)

Size (a) X Pitch

Torque

General Connection Points

N·m

ft-lb

Coarse

Fine

M6 X 1.0

9.8

0.5

7.2

0.4

12, 13

M8 X 1.25

22.6

1.1

16.6

0.8

14, 17

M10 X 1.5

47.1

2.4

34.7

1.7

17, 19

M12 X 1.75

83.4

4.1

61.5

3.0

19, 22

M14 X 2.0

134.4

6.7

99.1

4.9

22, 24

M16 X 2.0

207.9

10.4

153.3

7.7

27, 30

M20 X 2.5

410.9

20.5

303.1

15.1

12, 13

M8 X 1.0

24.5

1.2

18.1

0.9

14, 17

M10 X 1.25

2.5

36.9

1.8

17, 19

M12 X 1.5

87.3

4.3

64.4

3.2

19, 22

M14 X 1.5

135.3

6.8

99.8

5.0

22, 24

M16 X 1.5

220.6

162.7

8.1

27, 30

M20 X 1.5

452.1

22.6

333.4

16.6

102

MAINTENANCE

Important Parts

For safe use, the machine must be serviced periodically. To increase safety, periodically
replace the parts listed in the following table of important parts.
Serious injury or a fire could result if they deteriorate or are damaged.

Table of Important Parts

Above important parts are vulnerable to aging and wear or deterioration and it is difficult to
determine the degree to which they have deteriorated on the occasion of periodic service. To
maintain their proper function at all times, therefore, replace them with new ones after using
them for a specific period of time even if no abnormality is found with the parts. If you find
abnormalities in these parts before their scheduled replacement time is reached, repair or
replace them immediately. If a hose clamp is deformed or cracked, replace it immediately.
When replacing the important parts, please contact a Takeuchi sales or service outlet.

Also check the hydraulic hoses other than the above important parts. If any abnormality is
found in them, retighten them or replace them immediately.
When replacing the hydraulic hoses, replace the O-rings and seals at the same time.

Check the fuel and hydraulic hoses according to the periodic schedule described below.
Refer to “Maintenance”.

Type of inspection

Inspection item

Daily inspection

Leakages from joints, hydraulic or fuel hoses.

Monthly inspection Leakages from joints, hydraulic or fuel hoses.

Damaged hydraulic or fuel hoses(cracks, wear and tear).

Annual inspection Leakages from joints, hydraulic or fuel hoses.

Deteriorated, twisted, damaged hydraulic or fuel hoses (cracks, wear
and tear) or hoses in contact with other parts of the machine.

Unit

Important parts to be replaced periodically

Replacement Interval

Fuel hoses
Packing in fuel filler cap
Engine oil filter hoses
Heater hoses
Air conditioner hoses
Hydraulic hoses ( Pump - delivery )
Hydraulic hoses ( Pump - suction )
Hydraulic hoses ( Slew motor )
Hydraulic hoses ( Travel motor )
Hydraulic hoses ( Boom cylinder lines )
Hydraulic hoses ( Boom adjustment cylinder lines )
Hydraulic hoses ( Arm cylinder lines)
Hydraulic hoses ( Bucket cylinder lines )
Hydraulic hoses ( Swing cylinder )
Hydraulic hoses ( Blade cylinder )
Hydraulic hoses ( Tension cylinder )
Hydraulic hoses ( Pilot valve )
Hydraulic hoses ( Auxiliary lines )
Seat belt

Working

equipment

Engine connection

Machine

body

Every 2 years

Every 3 years

Hydraulic

system

Fuel system

Heater & AC systems

103

MAINTENANCE

Maintenance Chart

Maintenance Items

See page

Walk-Around Inspection

Inspecting by opening the engine hood and covers

105

Inspecting by walking around the machine

106

Inspecting while sitting in the operator’s seat

106

Daily Inspection (Every 10 Hours)

Inspecting and replenishing the coolant

107

Inspecting and replenishing the engine oil

108

Inspecting the water separator

108

Inspecting the fuel level

109

Inspecting the hydraulic oil level and replenishing

109

Lubricating the working equipment

111

After First 50 Hours (New Machines Only)

Replacing the hydraulic oil return filter

112

Replacing the engine oil and oil filter

113

Inspecting and adjusting the fan belt

114

Every 50 Hours

Inspecting the crawler tension

115

Lubricating the slew bearing

116

Inspecting the battery fluid level and replenishing

117

Draining the fuel tank

118

After First 250 Hours (New Machines Only)

Replacing the travel motor gear oil*

119

Every 250 Hours

Replacing the engine oil and oil filter

120

Inspecting and adjusting the fan belt

120

Cleaning the air cleaner

120

Cleaning the radiator fins and oil cooler fins

121

* If the percentage of the traveling time within the total operating time is high, replace the

gear oil earlier than the specified time.

104

MAINTENANCE

Maintenance Chart

Maintenance Items

See page

Every 500 Hours

Replacing the hydraulic oil return filter

122

Replacing the fuel filter

122

Replacing the water separator filter

123

Every 1000 Hours

Cleaning the engine cooling system

124

Replacing the air cleaner elements

125

Replacing the travel motor gear oil

126

Replacing the air breather filter

126

Inspecting and adjusting the engine valve clearance

126

Retightening the engine cylinder head bolts

126

Inspecting the engine fuel injection pressure and spray condition

126

Every 2000 Hours

Replacing the hydraulic oil and cleaning the suction strainer

127

Inspecting the engine fuel injection timing

129

Inspecting the engine fuel injection valve

129

When Required

Replacing the bucket teeth and the side cutters

130

Adjusting the gap between the bucket and arm

132

Inspecting and replenishing the windshield washer fluid

133

Draining the water separator

133

Replacing the bucket

134

Lubricating the levers

136

Inspecting the rubber crawlers

137

Replacing the rubber crawlers

138

105

MAINTENANCE

Walk-Around Inspection

Inspecting by Opening the
Engine Hood and Covers

1. Check for any twigs, leaves, oil or other

combustible materials around the engine
and battery.

2. Check for oil or engine coolant water

leakage around the engine.

3. Check for oil leakage from the hydraulic

tank, hydraulic devices, hoses and
connections.

Perform the following inspections once every day before starting the engine the first time.

WARNING

Before operating, perform the walk-around inspections and make repairs
immediately should any irregularities be found.

Be sure to secure the engine hood or cover when opening it. Do not open the engine
hood or cover on slopes or in strong wind.

Before starting the engine, look around the machine and lower body, clean any combustible
materials off high temperature parts of the engine, and inspect for such irregularities as oil
leakage, water leakage and looseness of nuts and bolts.

7 6

L3G003

106

MAINTENANCE

Walk-Around Inspection

Inspecting While Sitting in the
Operator’s Seat

13. Check the windshield for dirt or damage.
14. Check the seat and seat belt for dirt or

damage.
Check the operator’s seat for dirt, oil or
other combustible materials.

15. Check the monitor, instruments and

switches for dirt or damage.

Inspecting by Walking Around
the Machine

4. Check lights for dirt, damage and burnt

out bulbs.

5. Check attachments and hoses for

damage.

6. Check the bucket, bucket teeth and side

cutter for wear, damage and looseness.

7. Check the hook, slip stopper and hook

mount of buckets with hooks for damage.
(Option)

8. Check the handrail and step for damage

and loose bolts.

9. Check the crawler, carrier roller, track

roller, idler and sprocket for damage, wear
and loose bolts.

10. Check for oil leakage from the travel

motor.

11. Check the canopy, cab and guard for

damage and loose nuts and bolts.
Check the rear view mirror and room
mirror for dirt, damage, and angle
adjustment.

12. Check the labels for dirt and damage.

107

MAINTENANCE

Daily Inspection (Every 10 Hours)

Perform the following inspections once every day before starting the engine the first time.

WARNING

Before operating, perform the Daily inspections and make repairs immediately should
any irregularities be found.

Be sure to secure the engine hood or cover when opening it. Do not open the engine
hood or cover on slopes or in strong wind.

Replenishing
1. Remove the reserve tank’s cap (2).
2. Supply coolant up to the upper limit (H) of

the reserve tank (1).
If the reserve tank is empty, inspect for
fluid leakage, then inspect the radiator (3)
coolant level. If it is low, supply water to
the radiator (3) first, then to the reserve
tank.

3. Install the cap (2).

Inspecting and Replenishing the
Coolant

WARNING

Do not remove the radiator cap or drain
plugs when the coolant is hot. Stop the
engine, let the engine and radiator cool
and loosen the radiator cap or drain plugs
slowly.

Inspection

1. Open the engine hood and left side cover.
2. Inspect the quantity of coolant in the

reserve tank (1).
The level should be between the upper
limit (H) and lower limit (L).
If it is below the lower limit (L), replenish.

FULL

L3G004

LOW

108

MAINTENANCE

Daily Inspection (Every 10 Hours)

Inspecting the Water Separator

1. Turn the starter switch to the ON position.
2. Inspect the water separator warning lamp

(6).

3. If an alarm is sounded or a warning lamp

starts flashing, drain the water.
Refer to page 133 “Draining the Water
Separator”.

Inspecting and Replenishing the
Engine Oil

WARNING

Stop the engine and allow the machine
to cool down before performing
maintenance.

Never jump off the machine. Use the
steps and handrails when climbing on
and off the machine, and always
support your body at three points with
your hands and feet.

Inspection

1. Open the engine hood.
2. Pull out the dipstick (1) and wipe off the

oil with a rag.

3. Fully reinsert the dipstick (1), then pull it

back out.

4. Check the oil on the dipstick (1).

The level should be between the upper
limit (H) and lower limit (L).
If it is below the lower limit (L), replenish.

Replenishing
1. Remove the oil supply cap (2).
2. Supply oil up to the upper limit (H) of the

dipstick (1).
Problems could arise if the oil level is either
too low or too high.

3. Tighten the oil supply cap (2).
4. Start the engine, run it at low idle for about

3 minutes, then stop it.

5. After about 10 minutes, inspect the oil

level.

L3G005

L3G027

109

MAINTENANCE

Daily Inspection (Every 10 Hours)

Inspecting the Fuel Level

WARNING

Never jump off the machine. Use the
steps and handrails when climbing on
and off the machine, and always
support your body at three points with
your hands and feet.

Do not smoke or permit open flames
while fueling or near fueling
operations.

Stop the engine in a well-ventilated
place when supplying fuel.

Clean up spilled fuel immediately.

Do not fill the fuel tank to capacity.
Allow room for expansion.

Tighten the fuel filler cap securely.

1. Check the fuel level using the fuel gauge

(1).
F: full
E: empty

2. If the level is low, supply fuel from the fuel

port (2) while watching the fuel gauge (1).
Refer to page 42 “Fuel Filler Cap”.

Inspecting the Hydraulic Oil Level
and Replenishing

WARNING

Never jump off the machine. Use the
steps and handrails when climbing on
and off the machine, and always
support your body at three points with
your hands and feet.

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

button to relieve tank pressure.

Inspection
The oil level changes according to the oil
temperature. Inspect the oil level in the
hydraulic oil level inspection posture shown
in the diagram.

Hydraulic oil level inspection posture

1. Start the engine and run it at low speed.
2. Fully retract the arm and bucket cylinders

and ground the bucket.

3. Ground the dozer blade, then stop the

engine.

4. Inspect the oil level using the sight gauge

(6).

When the oil temperature is about 20

(68

F):

The level should be halfway between the
upper limit (H) and lower limit (L).
If it is below the lower limit (L), replenish.

L3G006

L3G007

110

MAINTENANCE

Daily Inspection (Every 10 Hours)

3
1

L3G008

When the oil temperature is about 50 to
80

C (122 to 176

F):

The level should be near the upper limit
(H).

Replenishing

1. Remove cap nut (2).
2. Press button (3) and bleed the air from

the tank.

3. Tighten securely by hand with cap nut (2).
4. Remove the plug (10).
5. Supply hydraulic oil up to the middle of

the sight gauge (6).

6. Tighten the plug (10).

Takeuchi Hydraulic Excavator TB175 (No. 17512105~). Operator's Manual (2007) - page 7