Check hydraulic valve clearance compensating elements - AR05.00-P-2010AMG

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ENGINES 156

Fig 1: Hydraulic Valve Clearance Compensating Elements

Courtesy of MERCEDES-BENZ USA

	Checking
	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
	Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
1	Check engine oil level, correct if necessary
2	Start engine, bring to normal operating temperature and switch off	Coolant temperature 60 to 80°C.
3	Remove partition wall between wheel wells	Model 251 only	AR62.30-P-2400RT
4	Remove spark plugs	Only if it is not possible to crank engine due to high compression.
		Model 164, 251	AR15.12-P-1010GZS
		Model 204, 212	AR15.12-P-1010CMG
		Model 209, 211, 219	AR15.12-P-1010TMG
		Model 216, 221	AR15.12-P-1010SMG
		Model 230	AR15.12-P-1010RMG
5	Rotate engine at crankshaft center bolt in direction of rotation of the engine to a 40° crankshaft angle after top dead center (TDC)	Rotate engine at crankshaft in running direction until scribe mark 40° on pulley/vibration damper corresponds with scribe mark on timing case.
6	Remove cylinder head covers	Model 164, 251	AR01.20-P-5014GZS
		Model 204, 212	AR01.20-P-5014CMG
		Model 209, 211, 219	AR01.20-P-5014TMG
		Model 216, 221	AR01.20-P-5014SMG
		Model 230	AR01.20-P-5014RMG
7	Press down the compensating element with a 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 compensating element drops too strongly: ↓
		Replace compensation element	AR05.00-P-2011AMG
		If several compensation elements are defective, check pressure oil supply to the cylinder head.
8	Install in the reverse order
9	Conduct engine test run and check engine for leaks