Removing/installing poly-V-belt tensioning device · ar1325w3200b · Mercedes-Benz WIS

AR13.25-W-3200B

Removing/installing poly-V-belt tensioning device

2.2.09

ENGINE 541.9 in MODEL 950, 952, 953, 954

ENGINE 542.9 in MODEL 950, 952, 954

Removing/installing poly-V-belt tensioning device

W13.25-1006-11

Shown on code (ML3) High-speed fan drive with belt drive, with removed fan

1 Alternator poly-V-belt

2 Poly-V-belt tensioning device for high-speed fan drive (only on code (ML3) high-speed fan drive with belt drive)

3 Poly-V-belt for fan (only on code (ML3) high-speed fan drive with belt drive)

4 Cap

5 Hexagon socket bolt

6 Poly-V-belt tensioning device for alternator

7 Bolt

Modification notes

15.3.05

Detach coolant expansion tank on radiator and place aside - added.

Step 3

 	Removing/installing
 Danger!	Risk of injury caused by being caught or pinched as cab is tilted	Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure with the safety strut.	AS60.80-Z-0001-01A
1	Tilt cab
	Notes on tilting the cab		AH60.80-N-0003-01A
2	Remove soundproofing on the right side of the engine
3	Remove coolant expansion tank on radiator on and place aside	 Do not disconnect coolant lines.
4	Remove red charge air hose		*BA09.41-N-1006-01C
 Danger!	Risk of injury caused by pinching or crushing when working on springs or spring bodies that are under load	Only use approved tensioning devices; shield off hazard area if necessary. Inspect special tools for damage and proper operation (visual inspection). Wear protective gloves.	AS00.00-Z-0001-01A
5	Slacken poly-V-belt of fan (3) and take it off the belt pulley of the coolant pump.	 Only on vehicles with code (ML3) high-speed fan drive with belt drive.
		 Installation: Inspect condition of poly-V-belt of fan (3), replace if necessary.
	Damage patterns for a poly-V-belt		AP13.22-D-1351-01A
6	Remove soundproofing below the radiator.
 Danger!	Risk of injury caused by pinching or crushing when working on springs or spring bodies that are under load	Only use approved tensioning devices; shield off hazard area if necessary. Inspect special tools for damage and proper operation (visual inspection). Wear protective gloves.	AS00.00-Z-0001-01A
7	Slacken Alternator poly-V-belt (1) and remove from the tensioning pulley of the poly-V-belt tensioning device of generator (6)	 Installation: Inspect condition of Alternator poly-V-belt (1), replace if necessary.
		Observe poly-V-belt routing plan.	AR13.22-W-3902-02A
	Damage patterns for a poly-V-belt		AP13.22-D-1351-01A
8	Remove cap (4) and unscrew hexagon socket head screw (5)		*BA13.25-N-1001-01D
9	Unscrew bolt (7) at tensioning element of poly-V-belt tensioning device of generator (6)		*BA13.25-N-1003-01D
10	Remove poly-V-belt tensioning device of generator (6) from support
11	Install in reverse order

 Charge air pipe/charge air cooling

Number	Designation		Engine 541.9	Engine 542.9


BA09.41-N-1006-01C	Clamp for charge air hose on charge air housing/charge air pipe and charge air cooler	Nm	7.5	7.5

 Belt tensioning device

Number	Designation			Engine 541.9, 542.9 without code ML3	Engine 541.9, 542.9 with Code ML3


BA13.25-N-1001-01D	Bolt for poly-V-belt tensioning device on carrier	M10	Nm	50	50
		M18	Nm	105	105
BA13.25-N-1003-01D	Bolt for tensioning element on tensioning device		Nm	35	35

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