Diesel engine 12V 4000 G73, 16V 4000 G73. Manual - part 28

7.14.4 Centrifugal oil filter – Cleaning and filter-sleeve replacement

Preconditions

☑ Engine is stopped and starting disabled.

Special tools, Material, Spare parts

Designation / Use

Part No.

Qty.

Torque wrench 6-50 Nm

F30027336

1

Filter wrench

F30379104

1

Cold cleaner (Hakutex 60)

50602

1

Grease (Kluthe Hakuform 30-10/Emulgier)

X00029933

1

Filter sleeve

(→ Spare Parts Catalog)

Sealing ring

(→ Spare Parts Catalog)

Sealing ring

(→ Spare Parts Catalog)

Sealing ring

(→ Spare Parts Catalog)

WARNING

Hot oil.

Oil can contain combustion residues which are harmful to health.

Risk of injury and poisoning!

• Wear protective clothing, gloves, and goggles / safety mask.

• Avoid contact with skin.

• Do not inhale oil vapor.

WARNING

Compressed air

Risk of injury!

• Do not direct compressed-air jet at persons.

• Wear protective goggles / safety mask and ear protectors.

Cleaning centrifugal oil filter and

replacing filter sleeve, variant A

1.

Remove clamp (3).

2.

Release screw of cover (1) and take off

cover (2).

3.

Carefully lift rotor (6), allow oil to drain and

remove from housing.

4.

Holding the rotor (6) firmly, release rotor

cover nut (7).

5.

Take off rotor cover (8).

6.

Remove filter sleeve (10).

7.

Measure thickness of oil residues on filter

sleeve (10).

8.

If maximum layer thickness of oil residues

exceeds 45 mm, shorten maintenance in‐

terval.

9.

Disassemble rotor tube (11), conical

disk (12) and rotor base (14).

10.

Wash rotor cover (8), rotor tube (11), coni‐

cal disk (12) and rotor base (14) with clean‐

er. Do not use sharp objects for cleaning.

11.

Blow out with compressed air.

12.

Check sealing ring (13), fit new one if nec‐

essary.

13.

Assemble rotor tube (11), conical disk (12)

and rotor base (14) with sealing ring (13).

14.

Insert new filter sleeve (10) in rotor tube

(11) with the smooth paper surface facing

the wall.

15.

Check sealing ring (9), fit new one if neces‐

sary.

16.

Mount rotor cover (8) with sealing ring (9).

17.

Tighten rotor cover nut (7) with 35 Nm to

45 Nm.

18.

Place rotor (6) in housing (5) and check for

ease of movement.

19.

Check sealing ring (4), fit new one if neces‐

sary.

20.

Fit sealing ring (4) on housing (5).

21.

Fit cover (2).

22.

Tighten screw of cover (1) by hand.

23.

Install clamp (3) and use torque wrench to

tighten to the specified tightening torque

8 Nm +2 Nm.

24.

Tighten screw of cover (1) with torque

wrench to the specified tightening torque

5 Nm +2 Nm.

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Cleaning centrifugal oil filter and

replacing filter sleeve, variant B

1.

Release screw (1) and remove.

2.

Remove clamp (3) and take off cover (2).

3.

Carefully remove rotor (5) from housing.

4.

Holding the rotor (5) firmly with the filter

wrench, release knurled nut (7).

5.

Take off rotor cap (8).

6.

Remove filter sleeve (9), stiffener plate (10)

and sealing ring (11).

7.

Measure thickness of oil residues on filter

sleeve.

8.

If maximum layer thickness of oil residues

exceeds 30 mm, shorten maintenance in‐

terval.

9.

Take off standpipe (12) from lower rotor

section (13).

10.

Wash cover (2), rotor cap (8), stiffener plate

(10), standpipe (12), lower rotor section

(13) and nozzles (14) with cleaner and blow

out with compressed air. Do not use sharp

objects for cleaning.

11.

Check nozzles (14) for obstructions.

12.

Move standpipe (12) over rotor lower sec‐

tion (13).

13.

Insert new filter sleeve (9) with stiffener

plate (10) into rotor cap (8) with the with the

smooth paper surface of the filter sleeve (9)

facing the rotor cap (8).

14.

Check sealing ring (11), fit new one if nec‐

essary. Coat sealing ring with grease and

insert in the groove of the rotor cap (8).

15.

Place rotor cap (8) onto standpipe (12).

16.

Holding the rotor (5) firmly with the filter

wrench, tighten knurled nut (7).

17.

Lubricate bearings of rotor (5), insert in

housing (6) and check for ease of move‐

ment.

18.

Check sealing ring (4), fit new one if neces‐

sary. Fit sealing ring on housing (6).

19.

Fit cover (2).

20.

Tighten screw (1) by hand.

21.

Install clamp (3) and use torque wrench to

tighten to the specified tightening torque

6 Nm +1 Nm.

22.

Tighten screw (1) with torque wrench to the

specified tightening torque 6 Nm +1 Nm.

7.15 Coolant Circuit, General, High-Temperature Circuit

7.15.1 Engine coolant – Level check

Preconditions

☑ Engine is stopped and starting disabled.
☑ MTU Fluids and Lubricants Specifications (A001061/..) are available.

WARNING

Coolant is hot and under pressure.

Risk of injury and scalding!

• Let the engine cool down.

• Wear protective clothing, gloves, and goggles / safety mask.

Checking engine coolant level at filler neck:

1.

Turn breather valve on coolant expansion tank counterclockwise to the first stop and allow pressure to

escape.

2.

Continue to turn breather valve counterclockwise and remove.

3.

Check coolant level (coolant must be visible at the lower edge of the cast-in eye).

Checking engine coolant level at

remote cooler:

1.

Check coolant level (coolant must be visible

at marking plate).

2.

Top up coolant if necessary (→ Page 120).

3.

Check and clean breather valve.

4.

Place breather valve on filler neck and

close.

Checking engine coolant level via level sensor:

1.

Switch on engine control system and check readings on the display.

2.

Top up coolant if necessary (→ Page 120).

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