Check basic position of camshafts - AR05.20-P-6010MC

ENGINE 275 in MODEL 215, 216, 220, 221, 230 

Fig 1: Identifying Cylinder Head Cover, Fan Shroud, Camshaft Bearing Cap And Belt Pulley/Vibration Damper (Shown On Model 220)

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove cylinder head covers (1)		AR01.20-P-5014H
2.1	Remove fan shroud (2).	Model 215.376, 220.176, 230 without code (P99) Special model "AMG Black Series"	AR20.40-P-6800AC
		Model 215.379, 220.179	AR20.40-P-6800IM
		Model 216, 221 except 216.379, 221.179	AR20.40-P-6800SZ
		Model 216.379, 221.179	AR20.40-P-6800SXM
2.2	Remove fan unit	Model 230 with code (P99) Special model "AMG Black Series"	AR20.40-P-5050RBS
	Checking
3	Position engine to a 30° crank angle after ignition TDC of cylinder 1	Rotate engine at crankshaft in direction of engine rotation until marking for a 30° crank angle on the belt pulley/vibration damper (12) coincides with marking on the timing case cover (arrow). The engine must not be turned back, otherwise the timing chain can skip and this can result in engine damage.
4	Check basic position of camshafts	The basic position of the camshafts is only correct if both holding devices (3) can be mounted free of tension on left and right cylinder head. The scribe marks (A) of the camshaft bearing caps (4) must align with scribe marks (B) on camshafts (5).
		Retainer (left camshaft)	*285589004000
		Retainer (right camshaft) If this is not possible: ↓	*137589014000
		Set basic position of camshafts.	AR05.20-P-6020M
5	Install in the reverse order

Fig 2: Identifying Holding Device (137 589 01 40 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Holding Device (285 589 00 40 00)

Courtesy of MERCEDES-BENZ USA