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

ENGINES 132.910 in MODEL 451.3/4 

Fig 1: Identifying Expansion Clip And Cover

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Crankshaft Belt Pulley, Center Bolt And Timing Case Cover

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Timing Case Cover, Camshaft Adjuster And Camshaft Sprocket

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove cylinder head cover		AR01.20-P-5014MCU
2	Detach right rear wheel		AR40.10-P-1100MCU
3	Remove expansion clips (1) and remove cover (2)
	Checking
4	Turn crankshaft on center bolt (4) of crankshaft belt pulley (3) in direction of engine rotation until marking (arrow A) is visible	The crankshaft must not be turned back, otherwise timing chain can skip and this can result in engine damage.
5	Transfer marking (arrow A) on crankshaft belt pulley (3) onto the front side of the crankshaft belt pulley (3) (arrow B) using a suitable colored pencil
6	Rotate crankshaft in direction of engine rotation until marking (arrow B) corresponds with marking "10" (arrow C) on timing case cover (5)	The marking "10" (arrow C) represents 10° BTDC.
7	Lower vehicle with vehicle lift
8	Check adjustment of camshaft	Check whether marking (arrow E) on camshaft adjuster (6) and marking (arrow D) on camshaft sprocket (7) stand opposite each other at the height of the upper edge of the timing case cover (5) If the marking (arrow E) on the camshaft adjuster (6) and marking (arrow D) on the camshaft sprocket (7) are not visible, turn crankshaft one more turn. If marking (arrow D) and marking (arrow E) are not flush: ↓ Set basic position of camshafts	AR05.20-P-6020MCU
9	Install in the reverse order