Remove/install cylinder head cover

AR01.20-S-5014EA

Remove/install cylinder head cover

06.03.2020

Engine

654.9 in model 447

1

Cylinder head cover

2

Bracket

1.1

Heat shield

22

Screw

23

Cap

24

Vent hose

3

Screw

4

Screw

5

Screw

6

Screw

7

Screw

8

Screw

9

Screw

10

Screw

11

Screw

12

Screw

13

Screw

14

Screw

15

Screw

16

Screw

17

Screw

18

Screw

19

Screw

20

Screw

1

Cylinder head cover

21

Sealing rings

 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

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

Notes on threaded connections fastened using a tightening angle-based tightening process

AH00.00-P-0020-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Remove fuel injectors.

AR07.16-S-1020EA

 Installation: Only install upper engine cover after the leak test.

2

Remove rail.

AR07.03-S-1010EA

3

Remove low-pressure exhaust gas recirculation valve at exhaust gas recirculation cooler and place to one side with lines connected.

AR14.20-S-7683EA

4

Remove position sensor of camshaft.

If cylinder head cover (1) will be replaced.

AR07.04-S-0058E

5

Remove holder (2).

 Bolt, bracket for low pressure exhaust gas recirculation cooler to cylinder head cover/low pressure exhaust gas recirculation cooler

*BA14.20-N-1015-01EA

6

Remove screws of boost pressure regulator at exhaust gas turbocharger.

 Installation: Replace screw/bolts.

 Do not perform any further disassembly operations.

 Screw, boost pressure regulator to high-pressure exhaust gas turbocharger

*BA09.40-N-1010-02EA

7

Remove screws (22) between heat shield (1.1) of cylinder head cover (1) and exhaust manifold seal.

8

Remove screws (3 to 20) in reverse numerical sequence.

 Bolts (3 to 20) remain in cylinder head cover (1).

 Installation: Tighten bolts (3 to 20) in numerical order.

 Screw/bolt, cylinder head cover to cylinder head

*BA01.20-N-1001-03EA

9

Remove the cylinder head cover (1).

10

Remove seals (21).

 Installation: Install new seals (21).

11

Degrease sealing surfaces on the cylinder head, rear cap, and cylinder head cover (1) with a lint-free dry cloth.

 Installation: Apply sealant (arrows A) to contact area between cylinder head and rear cover at cylinder head.

Assembly cleaner

*BR00.45-Z-1028-04A

Sealant, Loctite 5970, 50 ml

*BR00.45-Z-1013-01A

12

Unscrew cap (23).

If cylinder head cover (1) will be replaced.

13

Remove vent hose (24).

If cylinder head cover (1) will be replaced.

14

Install in the reverse order.



Check

15

Check engine oil level with instrument cluster.

If necessary,



Correct engine oil level .

 Engine oil

*BF18.00-N-1001-01EA

 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

16

Perform engine test run and check engine in the area of the cylinder head cover (1) for leak tightness.

17

Install upper engine cover.

AR01.10-S-2405EA

 Cylinder head cover

Number

Designation

Engine 654.9 in model 447

BA01.20-N-1001-03EA

Screw/bolt, cylinder head cover to cylinder head

Nm

8

 Turbocharger

Number

Designation

Engine 654.9 in model 447

BA09.40-N-1010-02EA

Screw, boost pressure regulator to high-pressure exhaust gas turbocharger

Stage 1

Nm

8

Stage 2

°

20

 Exhaust gas recirculation

Number

Designation

Engine 654.9 in model 447

BA14.20-N-1015-01EA

Bolt, bracket for low pressure exhaust gas recirculation cooler to cylinder head cover/low pressure exhaust gas recirculation cooler

Stage 1

Nm

8

Stage 2

°

30

 Filling capacities for engine lubrication system

Number

Designation

Engine 654.9 in model 447

BF18.00-N-1001-01EA

Engine oil

Oil fill capacity

Liter

9

Sheet

BB00.40-P-0228-51A

Sheet

BB00.40-P-0229-31A

Sheet

BB00.40-P-0229-51A

Sheet

BB00.40-P-0229-52A

Sheet

BB00.40-P-0229-71A

Repair materials

Number

Designation

Order number

BR00.45-Z-1013-01A

Sealant, Loctite 5970, 50 ml

A 003 989 98 20 10

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01