Remove/install chain tensioner

AR05.10-P-7800MTA

Remove/install chain tensioner

11.11.13

ENGINE

133 in MODEL 117, 156, 176

1

Chain tensioner

 

Remove/install

1

Remove engine compartment paneling

AR61.20-P-1105NKB

2

Remove cap for chain tensioner (1) on timing case cover

 Installation: Replace cap.

3

Remove chain tensioner (1)

 Screw/bolt, chain tensioner to bracket

*BA05.10-P-1001-01F



Check

4

Check chain tensioner (1) and replace if necessary

 The chain tensioner (1) may only now be reset and reused if it did not have any noticeable problems during previous use and all components of the chain drive do not show any signs of damage or no components of the chain drive were replaced.

 The chain tensioner (1) is pretensioned by an internal spring and moves out autonomously when being removed. If the chain tensioner (1) does not move out autonomously, it must be replaced.

5

Check bracket for chain tensioner (1) for damage and replace if necessary

 Screw/bolt, chain tensioner holder to crankcase

*BA05.10-P-1003-01F

6

Install in the reverse order

 Danger !

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

7

Carry out an engine test run and check engine for leaktightness

 Timing chain, chain tensioner

Number

Designation

ENGINE 133

BA05.10-P-1001-01F

Screw/bolt, chain tensioner to bracket

Nm

40

 Timing chain, chain tensioner

Number

Designation

ENGINE 133

BA05.10-P-1003-01F

Screw/bolt, chain tensioner holder to crankcase

Nm

20