Renewing oil seal for propshaft flange on rear final drive (rear final drive installed) — AUDI

Audi
Audi A4
2001
Audi A4 Cabriolet
2003
Audi A6
2005
Audi A8
2003
Power transmission
Rear final drive 01R
Edition
02.2010
Renewing oil seal for propshaft flange on rear final drive (rear final drive installed)
Special tools and workshop equipment required
Drive flange installing tool
VW 391
Multi-purpose tool
VW 771
Puller hook
VW 771/3
Punch
3026
Counterhold tool
3028
Drift sleeve
3143
Sealing grease
G 052 128 A1
Locking fluid
D 000 600
2 x Hexagon bolts M 8 x 30
Hexagon bolt M 10 x 100 10.9
Torque wrench
V.A.G 1332
Engine and gearbox jack
V.A.G 1383 A
with
universal gearbox support
V.A.G 1359/2
Removing
Rear final drive installed
Refer to general repair instructions
Chapter
.
Remove rear section of exhaust system
Rep. Gr.
26
.
Detach propshaft from rear final drive and tie up
Chapter
.
Position
engine and gearbox jack
V.A.G 1383 A
with
universal gearbox support
V.A.G 1359/2
under rear final drive.
If fitted, unscrew securing bolt for final drive support
arrow A
.
Remove securing bolts
arrows B
.
Carefully lower rear final drive until flange for propshaft is accessible.
Determining dimension
“a”
and dimension
“b”
Distance from flange to pinion shaft = dimension
“a”
Distance from flange to pinion shaft securing nut = dimension
“b”
Note measurements.
Mark position of securing nut relative to pinion shaft with paint
arrow
.
Bolt on
counterhold tool
3028
.
Unscrew securing nut for pinion shaft completely. Count the number of turns required and make a note of this number.
Re-install the originally fitted hexagon nut to secure the flange to the pinion shaft. Otherwise it will not be possible to re-install components in their original position.
Screw
2 hexagon bolts M 8 x 30
A
into flange.
Place
drip tray
V.A.G 1306
underneath.
Pull off flange with
drive flange installing tool
VW 391
.
Pull out oil seal.
Installing
Perform installation in reverse sequence of removal. Note the following:
Always renew O-ring behind flange.
Lubricate O-ring with gear oil before installing.
Lightly lubricate outer circumference and sealing lips of oil seal with gear oil.
Pack space between sealing lip and dust lip half-full with
sealing grease
G 052 128 A1
.
Drive in new seal onto stop (take care to keep seal straight).
Drive on propshaft flange until securing nut can be fitted onto pinion shaft.
The threads on the pinion shaft and securing nut must be cleaned so they are free of grease residue, and then coated thinly with
locking fluid
D 000 600
.
Install the originally fitted hexagon nut and tighten to the previously marked position
arrow
by turning the same number of turns as noted on removal.
Checking dimension
“a”
and dimension
“b”
O-ring
1
must be installed when performing measurements.
The hexagon nut must be exactly at the previously marked position.
The measurements must be the same as noted previously
Fig.
, within a tolerance of ± 0.3 mm.
Secure hexagon nut.
Installation instructions for final drive support
Fit bolts
A
and
B
and tighten lightly to start with (final drive support must be in full contact with final drive).
First tighten bolt
A
, then bolts
B
. Tightening torque
Item
and
Item
.
Install propshaft on rear final drive
Anchor
.
Check oil level in rear final drive
Chapter
.
Install rear section of exhaust system and perform stress-free alignment
Rep. Gr.
26
.