Check hydraulic valve clearance compensating elements

AR05.00-P-2010OLF

Check hydraulic valve clearance compensating elements

26.03.2014

ENGINE

651 in MODEL 222

2

Compensating element

3

Cam

4

Roller-type cam follower

5

Tool

 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

 

Remove/install

1

Check engine oil level, correct if necessary



AP18.00-P-1811MP


The oil level of the engine must lie between "Min" and "Max".
Engine damage can occur otherwise.

2

Start engine and bring to operating temperature

 Coolant temperature 60 to 80°C.

3

Remove cylinder head cover

AR01.20-P-5014OLF

4

Detach low-temperature circuit coolant line from engine charge air duct and place to one side

AR09.41-P-8623OLF



Check

5

Rotate engine at crankshaft using a counterholder in direction of engine rotation until the cam (3) on the compensating element (2) to be tested is on its base circle


The engine must not be turned back.
The timing chain can skip otherwise and cause engine damage.

 Counterholder

*651589074000

6

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

 Do not use a steel tool. Press compensating element (2) downwards using normal force of the hand.

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 in flow direction of oil if necessary.

If a compensating element (2) drops too strongly in comparison to the other compensating elements (2):



Remove/install hydraulic valve play compensation elements

AR05.00-P-2011OLF

7

Install in the reverse order