Servicing cover for centre differential, removing and installing centre differential — AUDI

Audi
Audi A4
2001
Audi A4 Cabriolet
2003
Power transmission
5-speed manual gearbox 01A, four-wheel drive
Edition
12.2008
Servicing cover for centre differential, removing and installing centre differential
Special tools and workshop equipment required
Thrust plate
VW 401
Thrust plate
VW 402
Press tool
VW 407
Press tool
VW 412
Tube
VW 416 B
Tube
VW 421
Guide pin
VW 439
Tube
VW 519
Oil seal extractor lever
VW 681
Press tool
40 - 21
Tube
2040
Thrust piece
3002
VW 771/15
from
multi-purpose tool set
VW 771
1
Internal puller 23.5…30 mm
, e.g.
Kukko21/4
3
Splitter 12...115 mm
, e.g.
Kukko17/2
Gearbox cover
Spring
Front needle bearing
Pulling out
Fig.
Installation position
Fig.
Pressing in
Fig.
Centre differential
Do not dismantle
Press out after removing flange shaft (rear)
Fig.
Renew if damaged
Pressing in
Fig.
Rear needle bearing
Pulling out
Fig.
Installation position
Fig.
Pressing in
Fig.
Ball bearing
For centre differential
Pressing off
Fig.
Pressing on
Fig.
Circlip
Circlip
Remove and install together with flange shaft
Fig.
Ball bearing
For flange shaft (rear)
Pressing out
Fig.
Pressing in
Fig.
Cover
For centre differential
Circlip
Sealing cap
Removing
Fig.
O-ring
Always renew
Grease when installing
TORX bolt
22 Nm
Oil seal
Pull out with
oil seal extractor lever
VW 681
Driving in
Fig.
Damper weight
Circlip
TORX bolt
35 Nm
Self-locking
Always renew
Flange shaft (rear)
Removing and installing
Fig.
Removing sealing cap
Remove circlip
A
.
Screw an M8 bolt into thread of sealing cap
B
.
Pull out sealing cap
B
using bolt.
Removing and installing flange shaft (rear)
Bend open circlip and pull out flange shaft.
When inserting flange shaft, fit circlip at the same time.
The circlip must be seated in the base of the groove.
Pressing out centre differential
Position
thrust piece
3002
directly on centre differential through opening
arrow
.
Pressing ball bearing off centre differential
A
Splitter 22...115 mm
, e.g.
Kukko 17/2
Pressing ball bearing onto centre differential
Press ball bearing on as far as stop.
Pressing out ball bearing for flange shaft (rear)
Remove circlip before pressing out bearing.
Pressing in ball bearing for flange shaft (rear)
Fit circlip after pressing in bearing.
Pulling out needle bearing
A
Internal puller 23.5...30 mm
, e.g.
Kukko 21/4
Both needle bearings in the centre differential are removed with the same puller.
Installation position of front needle bearing
Dimension
a
= 32.5 mm
Installation position of rear needle bearing
Dimension
a
= 14 mm
Pressing in needle bearing
Both needle bearings in the centre differential are pressed in with the same special tool.
Pressing in centre differential
Driving in oil seal
Lightly oil outer circumference of oil seal.
Installation position: 2 mm below surface of cover
Pack space between sealing lip and dust lip half-full with
sealing grease
G 052 128 A1
.