Replace timing chain - AR05.10-P-7601MCU

ENGINE 132.910 in MODEL 451.3/4 

Fig 1: Identifying Timing Chain Related Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Check basic position of camshafts		AR05.20-P-6010MCU
2	Remove timing case cover		AR01.40-P-8000MCU
3	Turn back ratchet (9) on chain tensioner (8) using a suitable screwdriver and lock chain tensioner (8) via the bore (arrow A)	In order to lock the chain tensioner (8), place a pin with a diameter of 1.5 mm into the bore (arrow A) in the chain tensioner (8). : Attach adapter to crankshaft, remove retaining lock on starter ring gear and turn engine in direction of engine rotation through about two revolutions until the markings on the crankshaft sprocket and on the cylinder crankcase stand opposite each other. Then check whether the marking (arrow B) on the camshaft sprocket (2) and the marking (arrow C) on the camshaft adjuster (3) stand opposite each other; remove timing chain (1) if necessary and mount again anew. Attach/disassemble retaining lock for engine	AR03.30-P-1600-06MCE
			Fig 2
			Fig 3
4	Unscrew bolts (5) and remove slide rail (6)	: Check slide rail (6) for wear; replace if necessary.	*BA05.10-P-1002-01P
			*BA05.10-P-1003-01P
5	Unscrew bolt (4) and remove tensioning rail (7)	: Check tensioning rail (7) for wear; replace if necessary.	*BA05.10-P-1001-01P
6	Take off timing chain (1)	: Before mounting the timing chain (1), check whether the marking (arrow B) on the camshaft sprocket (2) and the marking (arrow C) on the camshaft adjuster (3) are standing opposite each other. The intake camshaft and exhaust camshaft must be turned appropriately otherwise.
7	Install in the reverse order

TIMING CHAIN DRIVE

Number	Designation		Engine 132.9
BA05.10-P-1001-01P	Bolt, timing chain tensioning rail to cylinder head	Nm	23
BA05.10-P-1002-01P	Bolt, timing chain slide rail to cylinder head	Nm	10
BA05.10-P-1003-01P	Bolt, timing chain slide rail to crankcase	Nm	10

Fig 2: Identifying Retaining Lock (451 589 01 40 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Adapter (451 589 01 63 00)

Courtesy of MERCEDES-BENZ USA