Remove/install belt pulley/vibration damper

AR03.30-W-1600A

1.10.09

ENGINE 904.9 in MODEL 374, 375, 673, 674, 676, 958, 970, 972, 975, 976

ENGINE 906.9 in MODEL 374, 958, 970, 972, 974, 975, 976

ENGINE 906.9 in MODEL 374, 375, 950, 952, 953, 954, 958

W03.30-1062-06

Shown on engine 906.9 in model 970 with code (H03) Air conditioning in front end

1 Intermediate piece

2 Belt pulley/vibration damper

3 Poly-V belt tensioning device

4 Breaker bar and socket

5 Poly-V belt

6 Pulley

7 Bolts

8  Drifts/centering drift

L Shank length

Arrow: Pivot direction

Modification notes

24.8.09

Work procedure completely modified

 	Remove/install
1	Remove fan	Engine 904.9, Engine 906.9 in model 374.4, 958.0, 970, 972, 974, 975, 976	AR20.40-W-5614C
		Engine 906.9 in model 374.5, 375.3, 950, 952, 953, 954, 958.2	AR20.40-W-5614JB
2	Push poly-V belt tensioning device (3) into pivoting direction (arrow) with breaker bar and socket (4) and remove poly-V-belt (5) from guide pulley (6)	 Installation: Inspect condition of poly-V belt (5), replace if necessary.
		Damage profiles for poly-V belt (5)	AP13.22-D-1351-01A
		Observe poly-V belt (5) routing diagram.	AR13.22-W-3902-02B
3	Attach turning device for engine	 Block cranking/blocking device by inserting the pin.	AR03.30-W-1600-03J
			*BA01.60-N-1002-01A
			*BA01.60-N-1003-01A
			*904589046300
4	Remove intermediate piece (1)		*BA03.30-N-1003-01C
5	Remove two opposing bolts (7)		*BA03.30-N-1002-01C
		 Screwdriver bit (M141.5)	*904589001000
		 Screwdriver bit (M161.5)	*904589011000
6	Screw drifts/centering drift (8) into the threaded holes	 Drift (M161.5)	*403589026300
		 Centering drift (M141.5)	*904589026300
7	Unscrew remaining bolts (7)		*BA03.30-N-1002-01C
		 Screwdriver bit (M141.5)	*904589001000
		 Screwdriver bit (M161.5)	*904589011000
8	Remove belt pulley/vibration damper (2) over the drifts/centering drift (8)
9	Measure shank length (L) of bolts (7)	 Installation: If the maximum shank length (L) is exceeded, replace bolt (7) in question.
		Bolt M141.5	*BE03.30-N-1001-02B
		Bolt M161.5	*BE03.30-N-1002-02B
10	Install in the reverse order

Belt pulley/vibration damper

Number	Designation			Engine 900.9, 902.9, 904.9, 906.9


BE03.30-N-1001-02B	Bolt, vibration damper to crankshaft	Thread	M	141.5
		Length of shank when new	mm	60.0
		Permissible shank length	mm	61.0
BE03.30-N-1002-02B	Bolt, vibration damper to crankshaft	Thread	M	161.5
		Length of shank when new	mm	61.0
		Permissible shank length	mm	61.8

 Timing case

Number	Designation		Engine 900.9, 902.9, 904.9, 906.9


BA01.60-N-1002-01A	Inspection hole closure cover on timing case	Nm	25
BA01.60-N-1003-01A	Bolt, turning device to timing case	Nm	25

 Flywheel, driven plate, vibration damper, starter ring gear

Number	Designation				Engine 904.9, Engine 902.9, 906.9 without code MS8


BA03.30-N-1002-01C	Bolt, vibration damper to crankshaft	M16	Stage 1	Nm	50
			Stage 2	Nm	200
			Stage 3	°	90
		M14	Stage 1	Nm	50
			Stage 2	Nm	125
			Stage 3	°	90
BA03.30-N-1003-01C	Bolt, intermediate piece for vibration damper			Nm	60

904 589 01 10 00

Drift

Screwdriver bit

Centering drift

904 589 00 10 00

403 589 02 63 00

904 589 02 63 00

Cranking device

904 589 04 63 00