Remove/install cylinder head cover · ar0120s5014e · Mercedes-Benz WIS

AR01.20-S-5014E

Remove/install cylinder head cover

06.03.2020

Model

447 with engine 651

Modification notes

13.11.2014	Method extended	Operation step 6
13.11.2014	Method completely revised	Operation steps 1 to 16	AR01.00-S-2411-01E

1	Hose
2	Cylinder head cover
B6/23	Camshaft Hall sensor

S01.20-4533-06

 Danger	Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.	No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. Wear protective clothing when handling fuel.	AS47.00-Z-0001-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
 	Remove/install
1	Remove air-water duct		AR83.25-S-1410E
2	Remove cable duct at the cylinder head cover (2)		AR01.00-S-2411-01E
3	Remove injectors		AR07.16-S-1000E
		 Seal openings using rags.
4	Remove hose (1)
5	Disconnect electrical connection for camshaft Hall sensor (B623, )
6	Remove electrical wiring harness for camshaft Hall sensor (B6/23)
7	Remove cylinder head cover (2) screw/bolts	 Screw/bolts remain on the cylinder head cover (2).
		 Screw/bolt, cylinder head cover to cylinder head	*BA01.20-N-1001-01M
8	Remove cylinder head cover (2)	 Installation: Clean sealing surfaces and replace gasket.
		Assembly cleaner	*BR00.45-Z-1028-04A
9	Modify camshaft Hall sensor (B6/23)	Only when replacing the cylinder head cover (2).
			AR15.10-S-2000E
10	Install in the reverse order
	Check
 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
11	Check for leak tightness with engine running	 Visual inspection only.

 Crankcase ventilation, cylinder head cover

Number	Designation		Engine 651 in model 447
BA01.20-N-1001-01M	Screw/bolt, cylinder head cover to cylinder head	Nm	9

Repair materials

Number	Designation	Order number
BR00.45-Z-1028-04A	Assembly cleaner	A 000 986 56 01

Referenced documents

ah5400p000101a Information on preventing damage to electronic components due to electrostatic discharge
ar0100s241101e Detach cable duct on engine wiring harness and fasten.
ar0716s1000e Remove/install injectors
ar1510s2000e Remove/install camshaft Hall sensor
ar8325s1410e Remove/install air/water duct
as0000z000501a 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.
as4700z000101a Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.