Remove/install poly-V belt for fan drive

AR13.21-W-2015S

Remove/install poly-V belt for fan drive

31.03.2016

Engine

457.9 in model 949

Modification notes

31.03.2016

Tightening torque altered: fan clutch on belt pulley

Operation step 11

Shown on model 949 with code H03 (Air conditioning in front end)

1

Belt pulley (fan)

2

Poly-V belt (in fan)

3

Tensioning device

4

Guide pulley

5

Belt pulley

 Danger !

Risk of injury caused by pinching or crushing when working on springs or spring bodies that are under tension

Use only approved tensioning devices; additionally screen off hazardous area if necessary. Check special tools for damage and proper operation (visual inspection). Wear protective gloves.

AS00.00-Z-0001-01A



Remove

1

Open engine hood and raise to vertical position

AR88.40-W-1000R

2

Detach left and right charge air hoses at the charge air cooler

3

Remove left and right screw/bolts on radiator support and press radiator towards front

4

Remove fan clutch with fan on fan belt pulley (1)

 Block belt pulley fan (1) using the relevant tool.

5

Swivel (arrow A) tensioner pulley for clamping device (3) downwards and hold or block with suitable pin

6

Remove poly-V belt (2) from belt pulley (1) and belt pulley (5)

7

Press fan towards the front and connect; take out poly-V belt (2)



Check

8

Check all belt pulleys, deflecting and tensioner pulleys for damage and smooth operation, replace if necessary

Remove/install belt pulley/vibration damper

AR03.30-W-1600S

Remove/install poly-V-belt single tensioning device for fan drive

AR13.25-W-4010S

9

Check condition of poly-V belt (2); replace if necessary



Damage profiles for a poly-V belt

AP13.22-D-1351-01A



Install

10

Put poly-V belt (2) onto the belt pulley (1); put on belt pulley (5) and guide pulley (4)

AR13.22-W-3902-02C

 Observe poly-V belt routing diagram.

11

Attach fan clutch with fan to belt pulley (1)

 Block belt pulley fan (1) using the relevant tool.

 Fan clutch to belt pulley

*BA20.40-N-1010-01L

12

Position poly-V belt (2) on tensioner pulley for tensioning device (3) and pivot back tensioning device (3)

 Ensure that poly-V belt (2) is seated correctly.

13

Push radiator towards the back and fit it at the radiator mount on the left and right

14

Check right and left charge air hoses for damage and replace if necessary

15

Attach left and right charge air hoses at the charge air cooler

 Clamp, charge air hose to charge air housing/charge air pipe and charge air cooler

*BA09.41-N-1001-01K

16

Close engine hood

AR88.40-W-1000R

 Charge air pipe/charge air cooling

Number

Designation

Engine 457.91/97/98

BA09.41-N-1001-01K

Clamp, charge air hose to charge air housing/charge air pipe and charge air cooler

Nm

7,5

 Fan, fan clutch

Number

Designation

ENGINE 457.9 except CODE MZ3,MZ5

ENGINE 457.9 with CODE MZ3

BA20.40-N-1010-01L

Fan clutch to belt pulley

M8

Nm

30

30

M10

Nm

50

50