Remove/install poly-V belt guide pulley · ar1321s3350sd · Mercedes-Benz WIS

Designation

Engine 646 in model 636, 639

Engine 646 in model 906

BA13.25-N-1002-01P

Bolt of guide pulley to coolant pump

BA13.25-N-1004-01P

Bolt, guide pulley to timing case cover

AR13.21-S-3350SD

Remove/install poly-V belt guide pulley

16.6.10

ENGINES 646 in MODEL 636, 639

ENGINES 646.984 /985 /986 /989 /990 in MODEL 906

S13.21-4500-06

Shown on engine 646.984

1 Cover

2 Bolts

3 Guide pulleys

 	Remove/install
1	Remove poly-V belt	Model 636, 639	AR13.22-S-1202S
		Model 906	AR13.22-D-1202SD
2	Remove cover (1)
3	Remove bolts (2)		*BA13.25-N-1002-01P
			*BA13.25-N-1004-01P
4	Remove guide pulleys (3) with spacers	 Installation: Check guide pulleys (3); replace if necessary.
5	Install in the reverse order

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