Check hydraulic valve clearance compensating elements

AR05.00-S-2010EA

Check hydraulic valve clearance compensating elements

28.06.2019

Engine

654.9 in model 447

2

Compensating element

3

Cam

4

Roller-type cam follower

5

Plastic drift

 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

 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

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A



Remove

1

Check engine oil level electronically with instrument cluster.

If necessary,



Correct engine oil level .



Low SPAsh multigrade service engine oils (specification 229.71)

BB00.40-P-0229-71A

2

Start engine, bring to operating temperature and then switch off.

3

Remove cylinder head cover.

AR01.20-S-5014EA

4

Remove resonator box.

AR09.20-S-0010EA



Check

5

Turn engine at crankshaft in the direction of engine rotation until the cam (3) on the compensating element (2) to be checked is on its base circle.


Do not turn engine against direction of engine rotation.
The timing chain can skip otherwise and cause engine damage.

 Counterholder

*654589004000

6

Manually press down compensating element (2) via roller-type rocker arm (4) using a suitable plastic drift (5).

 Press compensating element (2) downwards using normal force of the hand.

If several compensating elements (2) drop,



Check oil ducts and oil feed bores of the compensating elements (2) for contamination.

If a compensating element (2) drops more in comparison to the other compensating elements (2)



Replace compensating element (2).

AR05.00-S-2011EA



Install

7

Install resonator box.

AR09.20-S-0010EA

8

Install cylinder head cover.

AR01.20-S-5014EA