Audi Workshop Service and Repair Manuals

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

Special tools and workshop equipment required

t	Drive flange installing tool -VW 391-

t	Multi-purpose tool -VW 771-

t	Puller hook -VW 771/3-

t	Punch -3026-

t	Counterhold tool -3028-

t	Drift sleeve -3143-

t	Sealing grease -G 052 128 A1-

t	Locking fluid -D 000 600-

t	2 x Hexagon bolts M 8 x 30

t	Hexagon bolt M 10 x 100 10.9

t  Torque wrench -V.A.G 1332-

t  Engine and gearbox jack -V.A.G 1383 A- with universal gearbox support -V.A.G 1359/2- Removing l  Rear final drive installed l  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” t  Distance from flange to pinion shaft = dimension “a” t  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” t  O-ring -1- must be installed when performing measurements. t  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.