Remove/install cylinder head cover

AR01.20-G-5014DD

Remove/install cylinder head cover

22.08.2019

Engine

900.91/92 in model 000.001

Engine

902.91/93 in model 000.001

Engine

904.94/95/96/97 in model 000.001

Engine

906.93/94/95/96/98/99 in model 000.001

Engine

924.91/93/94 in model 000.001

Engine

925.9 in model 000.001

Engine

926.91/92/93/95/97/98 in model 000.001

1

Cylinder head cover

3

Vent hose

5

Engine cover

2

Bolts

4

Vent line

6

Seal

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

 Caution

Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil

Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.

AS18.00-Z-0001-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-N-5000-01H

 

Remove/install

1

Remove engine cover (5).

 Installation: Only re-install the engine cover (5) after the leak test.

2

Remove vent hose (3) from the bleed line (4).

3

Check vent hose (3) for damage.

If the vent hose is damaged,



Replace vent hose (3).

4

Remove the cylinder head cover (1).

 Installation: Clean the sealing surfaces of cylinder head cover (1) and the cylinder head. Replace sealing washers on screw/bolts (2) and seal (6).

 Screw/bolt, cylinder head cover to cylinder head

*BA01.20-N-1001-01J

5

Install in the reverse order



Check

6

Start engine and perform an engine test run.

 See information from body manufacturer. Allow the engine to run at a higher engine speed.

7

Switch off engine and check in the area of the cylinder head cover (1) for leak tightness.

 Perform visual inspection.

 Crankcase ventilation, cylinder head cover

Number

Designation

Engine 900.9, 902.9, 904.9, 906.9

Engine 924.9, 925.9, 926.9 in model 000.001

BA01.20-N-1001-01J

Screw/bolt, cylinder head cover to cylinder head

Nm

30

30