Remove/install timing case cover

AR01.40-D-8000SD

Remove/install timing case cover

24.2.11

 

Remove/install

1

Disconnect battery ground line

AR54.10-D-0003SD

2

Remove coolant pump (3)

AR20.10-D-1271SD

3

Remove chain tensioner

AR05.10-D-7800SD

4

Remove cylinder head front cover (1)

AR01.30-D-5700SD

5

Remove poly-V belt tensioning device (6)

AR13.25-S-3200SD

6

Remove coolant hose on oil-water heat exchanger

 Do not remove oil-water heat exchanger.

AR18.30-D-3481SD

7

Remove power steering pump (5)

 Do not disconnect hydraulic lines. Place power steering pump (5) to one side and secure with cable ties.

AR46.30-S-0500SD

8

Remove alternator (G2/2) or alternator with LIN bus (G2/7)

AR15.40-D-5032SD

9

Detach refrigerant compressor (A9)

Only on vehicles with code (HH9) Regulated air conditioning (Tempmatic)

AR83.55-D-5300D

 Do not disconnect refrigerant lines.

10

Remove belt pulley with vibration damper (8)

 Installation: Prior to installation of the belt pulley with vibration damper (8), replace the front crankshaft radial sealing ring. See: 

AR03.30-D-1600SD

Replace front crankshaft radial sealing ring

AR03.20-S-3000S

11

Unscrew screw cap (2)

 Only when replacing the oil filter element.

 Installation: Replace oil filter element and sealing rings.



*BA18.20-N-1001-01O

Socket wrench bit

*103589020900

12

Remove oil pan (7)

AR01.45-D-7500SD

13

Unscrew the bolts on the timing case cover (4)

 Installation: Pay attention to the varying bolt lengths and bolt diameters according to the bolt diagram.

AR01.40-S-8000-01SD



*BA01.30-N-1003-01K



*BA01.40-N-1001-01Q

14

Remove timing case cover (4)

 Installation: Clean the sealing surfaces on the crankcase and timing case cover (4). The sealing surfaces must be free of oil and grease. Ensure that no sealant gets into the oil ducts.

Loctite 5970 sealant

*BR00.45-Z-1013-01A



Notes on sealant path for timing case cover

AH01.40-P-1000-01SD

15

Inspect the oil pressure relief valve and the screw plugs for damage, replace if necessary

 Installation: When replacing the timing case cover (4) the oil pressure relief valve and all detachable parts must be modified following visual inspection, replace if necessary.



*BA01.40-N-1004-01Q

16

Install in the reverse order

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

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

AS00.00-Z-0005-01A

17

Conduct engine test run and check engine for leaks around the timing case cover (4)

Number

Designation

Engine
646 in model 906

BA01.30-N-1003-01K

Bolt, cylinder head to timing case cover

M8

Nm

20

Number

Designation

Engine 646.984/
985/986/
989/990
in model 906

BA01.40-N-1001-01Q

Bolt, timing case cover to cylinder crankcase

M8

Nm

20

BA01.40-N-1004-01Q

Bolt plug at timing case

M101

Nm

9

M221.5

Nm

45

Number

Designation

Engine
646.984/
985/986/
989/990

BA18.20-N-1001-01O

Threaded cap on oil filter

Nm

25

Number

Designation

Order number

BR00.45-Z-1013-01A

Loctite 5970 sealant

A 003 989 98 20