Remove/install timing chain for Lanchester balancer · ar0320d1200ng · Mercedes-Benz WIS

AR03.20-D-1200NG

Remove/install timing chain for Lanchester balancer

11.9.08

ENGINES 271.951 in MODEL 906

Remove/install timing chain for Lanchester balancer

D03.20-1143-09

1 Timing chain

2 Lanchester balance shaft

3 Open end wrench

4 Screw

8 Pulley

9 Lanchester differential housing

11 Tensioning rail

5 Groove

6 Drive gear

7 Drive gear

D03.20-1133-04

16 Belt pulley with vibration damper

	Remove
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
1	Remove oil pan		AR01.45-D-7500NG
2	Turn crankshaft in direction of engine rotation until the piston on cylinder 1 stands at 90° before top dead center (OT)
3	Counterhold Lanchester balancer shaft (2) at hexagon using open end wrench (3) and loosen bolt (4)
4	Unscrew bolt (4)
5	Push tensioning rail (11) inwards and remove drive gear (7)	 Remove timing chain (1) from drive gear (7).
6	Disconnect timing chain (1)		AR03.20-D-1200-01NG
			*602589009800
			*602589023300
			*602589046300
			*602589046301
	Install
7	Draw in new timing chain		AR03.20-D-1200-03NG
			*602589009800
			*602589024000
8	Rivet new timing chain		AR03.20-D-1200-02NG
			*271589026300
			*602589003900
			*602589009800
			*BA03.20-N-1003-03A
9	Turn crankshaft in direction of engine rotation until the piston on cylinder 1 to top dead center	 The TDC marking on belt pulley with vibration damper (16) must be aligned with the positioning edge on the timing case cover (arrow).
10	Push tensioning rail (11) inwards, lay timing chain (1) on the drive gear (7), place drive gear (7) on the Lanchester balance shaft (2) and tighten screw/bolt (4)	 Tighten screw/bolt (4) only finger-tight. Grooves (5) at the drive gears (6, 7) must be horizontal must point in the direction of the guide pulley (8). Place timing chain again if necessary.
11	Turn crankshaft in direction of engine rotation until the piston on cylinder 1 stands at 90° after top dead center
12	Counterhold Lanchester balancer shaft (2) at hexagon using open end wrench (3) and tighten bolt (4)		*BA03.20-N-1001-03A
13	Installing oil pan		AR01.45-D-7500NG

 Lanchester balancer

Number	Designation			Engine 271


BA03.20-N-1001-03A	Bolt, drive gear to Lanchester balance shaft	Stage 1	Nm	40
		Stage 2	°	-
BA03.20-N-1003-03A	Timing chain river link bolt Lanchester balance shaft (reference value)		Nm	32