Remove/install camshafts - AR05.20-P-6992MCU

ENGINE 132.910 in MODEL 451.3/4 

Fig 1: Identifying Camshafts Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	The intake camshaft (1) and exhaust camshaft (2) can be removed separately
1	Check basic position of intake camshaft (1) and exhaust camshaft (2) and mark position of camshaft adjuster (3) relative to timing chain (4)		AR05.20-P-6010MCU
2	Remove camshaft sprocket (5) on exhaust camshaft (2)	Only the exhaust camshaft (2) is removed and adjusting of the basic setting is not required; fix camshaft sprocket (5) with cable tie to timing chain (4).	AR05.20-P-6040MCU
3	Remove bearing bridge (6)	Observe loosening and tightening sequence otherwise the bearing bridge (6) can be damaged.	AR05.20-P-6992-04MCU
			*BA05.20-P-1001-01M
	Exhaust camshaft (2)
4	Remove camshaft bearing cap (7) for exhaust camshaft (2)	Observe loosening and tightening sequence otherwise the exhaust camshaft (2) can be damaged. : Insert camshaft sprocket (5) into timing chain (4), position on exhaust camshaft (2) and check whether the marking (arrow C) on camshaft sprocket (5) and marking (arrow D) on camshaft adjuster (3) are standing opposite to each other at the height of the upper edge of the timing case cover (9). Ensure that the crankshaft is not turned.	AR05.20-P-6992-04MCU
			*BA05.20-P-1002-01M
5	Detach and remove exhaust camshaft (2) from the bearing seat by turning at hexagon (arrow A)
	Intake camshaft (1)
6	Remove camshaft bearing cap (8) for intake camshaft (1)	Observe loosening and tightening sequence otherwise the intake camshaft (1) can be damaged.	AR05.20-P-6992-04MCU
			*BA05.20-P-1002-01M
7	Detach and remove intake camshaft (1) from the bearing seat by turning at hexagon (arrow A)
8	Lift timing chain (4) and remove intake camshaft (1)	: Insert intake camshaft (1) in the timing chain (4) using the camshaft adjuster (3) in such a way that the marking (arrow D) on the camshaft adjuster (3) is at the upper edge of the timing case cover (9). Ensure that the crankshaft is not turned.
9	Remove camshaft adjuster (3) on inlet camshaft (1)	When replacing the intake camshaft (1).	AR05.20-P-7201MCU
	Checking
10	Check cam on intake camshaft (1) or exhaust camshaft (2) for wear; replace intake camshaft (1) or exhaust camshaft (2) if necessary
11	Install in the reverse order

CAMSHAFT

Number	Designation		ENGINE 132.9
BA05.20-P-1001-01M	Bolt, camshaft bearing bridge to cylinder head	Nm	20
BA05.20-P-1002-01M	Bolt connecting camshaft bearing cap to cylinder head	Nm	11