Audi Workshop Service and Repair Manuals

Servicing bearings for spur gear and centre differential

Special tools and workshop equipment required

t	Thrust plate -VW 401-

t	Thrust plate -VW 402-

t	Press tool -VW 408 A-

t	Press tool -VW 412-

t	Thrust plate -VW 447 H-

t	Thrust pad -VW 511-

t	Support -40 - 103-

t	Thrust plate -40 - 105-

t	Thrust plate -3005-

t	Sleeve -3144-

t	Tube -3296-

t	Assembly tool -3301-

t  Assembly tool -3347-

t  Thrust piece -3412-

t  -1-Internal puller -Kukko 21/7- t  -3-Splitter -Kukko 17/2- t  -4-Counter-support -Kukko 22/2-

t  Three-arm puller -Kukko 45-2-

1 -	Output shaft

2 -	Gearbox cover

3 -	Tapered roller bearing outer race

q	Removing and installing → Item

4 -	Tapered roller bearing inner race

q	Goes towards gearbox cover

q	Pressing off → Fig.

q	Pressing on → Fig.

5 -	Needle bearing

q	Bearing for spur gear on output shaft

6 -

Spur gear

q	Drive gear for side shaft (spur gearing)

7 -	Tapered roller bearing inner race

q	Goes towards bearing plate

q	Pressing off → Fig.

q	Pressing on → Fig.

8 -	Tapered roller bearing outer race

q	Pressing out → Fig.

q	Pressing in → Fig.

9 -

Shim

q	Adjusts preload of tapered roller bearings for spur gear → Item

q	Determining thickness → Chapter

10 -	Bearing plate

11 -	Spacer sleeve

12 -

Shim

q	Sets position of centre differential

q	Determining thickness → Chapter

13 -	Ball bearing, small

q	For centre differential

q	Pulling out → Fig.

q	Pressing in → Fig.

14 -	Centre differential

q	Can only be serviced by manufacturer

15 -	Ball bearing, large

q	For centre differential

q	Pulling off → Fig.

q	Pressing on → Fig.

Pressing tapered roller bearing inner race off spur gear A -  Splitter 22...115 mm, e.g. -Kukko 17/2-   Note t  The method of pressing off the tapered roller bearing inner races for the spur gear is the same for both bearings. t  The tapered roller bearing inner and outer races are paired. Do not interchange.

Pressing tapered roller bearing inner race onto spur gear (gearbox cover side)

Pressing tapered roller bearing inner race onto spur gear (bearing plate side)

Pressing tapered roller bearing outer race out of bearing plate

Pressing tapered roller bearing outer race -A- into bearing plate

Pulling small ball bearing -C- out of centre differential A -  Counter-support, e.g. -Kukko 22/2- B -  Internal puller 37 ... 46 mm, e.g. -Kukko 21/6-

Pressing small ball bearing -A- into centre differential

Pulling large ball bearing -B- off centre differential –  Insert smaller diameter of thrust plate -VW 447 H- in centre differential –  Then apply thrust plate -40 - 105-. A -  Three-arm puller, e.g. -Kukko 45-2-

Pressing large ball bearing -A- onto centre differential