ar0500d2010us

Inspect hydraulic valve clearance compensating elements

Type ar · topic 05.00 · version 0100 · 2007-09-13

Applies to: ENGINE 272.979 in MODEL 906

Where it sits

Function group 1 Engine › 05 Engine timing › 05.00 General — Series 906

EinPAS 15 Engine › 15.17 Engine timing › 15.17.30 Valve train — Series 906

Also applies to engines/gearboxes: 272 979

AR05.00-D-2010US

Inspect hydraulic valve clearance compensating elements

29.8.07

ENGINE 272.979 in MODEL 906

Inspect hydraulic valve clearance compensating elements

D05.00-1115-11

1 Drift

	Checking
1	Check engine oil level, correct if necessary	 Check the engine oil level two minutes after switching off the engine.
		 The engine oil level must not be above the maximum mark. This can lead to engine damage. The fill level markings on the oil dipstick are designed for an engine oil temperature of about 80 °C. Do not top up with any more oil for engine oil temperatures below this when filling the prescribed oil quantity.
 Danger!	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
2	Bring the engine to normal operating temperature and switch it off	 Coolant temperature 60 to 80 °C.
3	Remove the right cylinder head cover		AR01.20-D-5012US
4	Remove left cylinder head cover		AR01.20-D-5013US
5	Turn the engine at the vibration damper of the crankshaft in the direction of engine rotation until the cam of the camshaft of the compensation element to be checked is on the base circle	 Compensation elements not lying on the base circle of the cam must be replaced.
6	Press the compensation element by pushing down (arrow) the roller-type cam follower using a suitable drift (1)	 Never use a steel tool to avoid damaging the surfaces.
		 The compensating element should be pressed together very slowly with the normal force of the hand. Do not apply strong pressure.
		 If a compensation element moves down too much as compared to the others, install a new valve clearance compensating element. See 
		Remove, install hydraulic valve clearance compensating elements	AR05.00-D-2011US
		 If several compensation elements move down, check the oil duct and the oil feed bores for contamination, and clean them if required.
7	Install in the reverse order

Referenced documents

ar0120d5012us Remove/install right cylinder head cover
ar0120d5013us Remove/install left cylinder head cover
ar0500d2011us Remove, install hydraulic valve clearance compensating elements
as0000z000501a 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.