Remove/install hydraulic valve clearance compensating elements

AR05.00-P-2011OM

Remove/install hydraulic valve clearance compensating elements

03.02.2020

Engine

642 in model 164, 203, 204, 209, 211, 219.322, 251

Modification notes

26.08.2019

Reference document AR05.20-P-6992TQ added.

Operation step 1.

26.08.2019

Reference document AR05.20-P-6992TI added.

Operation step 1.

1

Compensating element

2

Clamp

3

Roller-type cam follower

 Warning

Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.

No parts of the body or limbs should be within the operating area of mechanical components when moving components.

AS00.00-Z-0009-01A

 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

 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 avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Remove camshafts.

Engine 642 in model 219.322

AR05.20-P-6992TQ

Engine 642 in model 211

AR05.20-P-6992TI

Engine 642 in model 203, 209

AR05.20-P-6992PI

Engine 642 in model 164, 204, 251

AR05.20-P-6992OM

2

Release compensating element (1) from the roller-type rocker arm (3).

 Pry off clamp (2) by hand.

3

Remove roller-type rocker arm (3).

4

Remove compensating element (1).


The slide surfaces of the compensating element (1) and the roller cam follower (3) would magnetize themselves.
This can cause minute iron chips to accumulate, which can damage compensating element (1) and the cam.

 Installation: Re-install compensating elements (1) at the same place if they have not been replaced.

5

Install in the reverse order.

 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

6

Perform engine test run and check engine for leak tightness.