Ribbed belt drive for vane pump, alternator and viscous fan; V-belt drive for coolant pump — AUDI

AJL ANB APU
Note:

Mark the direction of rotation with chalk or felt pen before removing the ribbed belt. If the belt rotates in the wrong direction when it is refitted, this can cause breakage. Ensure that the belt is properly seated on the pulleys when installing.

10 Nm.
Fan wheel
For viscous fan
Removing and installing
=>Page
13-28

25 Nm.
Pulley
For coolant pump
V-belt version
Installation position: flat section of pulley towards coolant pump

Ribbed V-belt
Removing and installing
=>Page
13-22
Check for wear

Bolt (special type)

=> Parts List

Tighten bolt with strength rating 8.8 and tighten to 10 Nm + 90°
Bolt with strength rating 10.9: tighten to 40 Nm.

Vibration damper
With pulley for ribbed belt
May only be installed in one position => Fig.
13-16

25 Nm.
Tensioning element for ribbed belt
Swivel with open-ended spanner to slacken ribbed belt => Page
13-22

Pulley
For viscous fan
Removing and installing
=>Page
13-28

Circlip
For viscous fan bearing
Removing and installing
=>Page
13-33

10 Nm.
Mounting
For viscous fan
Removing and installing
=>Page
13-33

Hammer head bolt
Insert before installing retainer for alternator, vane pump and viscous fan

40 Nm
25 Nm

Alternator
Removing:

Disconnect battery earth strap
Slacken ribbed belt and remove from alternator => Page
13-22
.
Remove air duct hose to throttle valve connection.
If necessary, unscrew viscous fan and put into radiator cowl.
Slacken mountings, top and bottom
Pivot alternator slightly to one side and pull out bottom bolt
Remove electrical wires from alternator.
Remove alternator

Installing:

To facilitate attachment of the alternator slightly drive back thread bush for securing bolt at retainer.

40 Nm
40 Nm
Strut
To cylinder block

25 Nm
Support
For intake manifold

20 Nm
40 Nm
25 Nm
Bolts have different lengths. Allocation and tightening sequence => Page
13-42

25 Nm

Retainer
For alternator, vane pump and viscous fan
Removing and installing
=>Page
13-38

Vane pump
For power steering
Removing and installing:

=> Running gear, FWD and 4WD; Repair group 48; Power steering/oil circuit for 4 cyl. petrol and diesel engine; Removing and installing vane pump.
Running gear, FWD and 4WD
Power steering/oil circuit for 4 cyl. petrol and diesel engine
Removing and installing vane pump.

25 Nm
Coolant pump
With thermostat
Removing and installing
=> Page
19-15

Pulley
For vane pump
Ribbed belt version
Installation position: Open side faces to front of vehicle

Pulley
For vane pump
V-belt version

25 Nm
V-belt
For coolant pump
Removing and installing
=>Page
13-25

Viscous coupling
Removing and installing
=>Page
13-28

Fig. 1
Installing vibration damper

Lock carrier in service position =>Page
13-1
.
Ribbed belt must be removed =>Page
13-22
.

Only use original bolts to install the vibration damper:

=> Parts List

Can only be installed in one position. The hole -arrow- in the vibration damper must fit over the projection on the toothed belt sprocket.

Tighten the bolts of the vibration damper as follows.
Tighten bolt with bolt strength rating 8.8 and tighten to 10 Nm + 90°
Bolt with strength rating 10.9: tighten to 40 Nm