Check hydraulic valve clearance compensating elements

AR05.00-S-2010EF

Check hydraulic valve clearance compensating elements

5.2.15

MODEL

447 with ENGINE 622

2

Compensating element

4

Roller-type cam follower

5

Tool



Check

1

Check engine oil level, corrected as required



Low SPAsh multigrade service engine oils (specification 228.51)

BB00.40-P-0228-51A



Low SPAsh multigrade service engine oils (specification 229.31)

BB00.40-P-0229-31A


The oil level must not lie above the maximum marking.
This can lead to engine damage otherwise.



Remove

 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

2

Start engine and bring to operating temperature

 Coolant temperature about 80°C.

3

Remove cylinder head cover

AR01.20-S-5014EF



Check

4

Press down on every compensating element (2) over roller cam follower (4) by hand using the appropriate tool (5)


Do not use a steel tool; press down compensating element (2) with normal force of the hand.
Prevent damage.

Lower a number of compensating elements (2):



Check oil ducts and oil feed bores for the compensating elements (2) for fouling; blow through oil ducts with compressed air in flow direction of oil if necessary.

If one compensating element (2) drops much more than other compensating elements (2), replace compensating element (2) in question:



Remove/install hydraulic valve clearance compensating elements

AR05.00-S-2011EF



Install

5

Install cylinder head cover

AR01.20-S-5014EF