Audi Workshop Service and Repair Manuals

Renewing oil seal for final drive/gearbox housing

Special tools and workshop equipment required

t	Drip tray -V.A.G 1306-

t	Oil seal extractor lever -VW 681-

t	Thrust piece -T10139-

Requirements l  Gearbox removed l  Gearbox mounted on assembly stand → Chapter.   Caution Do not place gearbox down on the oil pan. Procedure   Note t  A defective oil seal allows gear oil to enter the torque converter bellhousing. t  General repair instructions → Chapter. t  Rules for cleanliness when working on the automatic gearbox → Chapter. –  Remove gearbox support (right-side) → Chapter. –  Place drip tray -V.A.G 1306- under the gearbox. –  Remove flange shaft (right-side) → Chapter.

–  Unscrew bolts on final drive cover in the sequence -11 ... 1- and remove cover together with outer race for tapered roller bearing and shim.   Note Thickness of shim has been measured to fit; the shim must not be replaced with another shim of different thickness.

–  Remove differential. –  Remove tapered roller bearing outer race -1- for differential and shim -2- (behind outer race) from gearbox housing by hand.   Note Thickness of shim has been measured to fit; the shim must not be replaced with another shim of different thickness.

–  Remove flange shaft (left-side) → Chapter. –  Pull out oil seal.   Note The oil seal extractor lever -VW 681- must be applied behind the two sealing lips of the oil seal. Do not apply the lever to the outer circumference of the seal, as this would damage the sealing surface in the gearbox housing. Guide the lever carefully when removing the seal. –  Examine oil seal seat in gearbox housing for damage; reface surface if necessary. –  Lightly lubricate outer circumference and sealing lip of oil seal with gear oil.   Note Push oil seal onto thrust piece with the protruding sealing lip on the oil seal facing towards the tool.

–  Drive in new oil seal as far as stop using thrust piece -T10139-.

–  Insert shim -2- and tapered roller bearing outer race -1- for differential onto stop in gearbox housing by hand.   Note Make sure that shim and outer race are kept straight when inserting.

–  Renew O-ring -arrow-. –  Install differential in gearbox housing. Note the following if the outer race for tapered roller bearing and the shim have dropped out of the final drive cover: –  Lubricate shim and outer race for tapered roller bearing with gear oil and insert in final drive cover as far as the stop.

–  Tighten bolts of cover for final drive as follows.

Stage	Tightening sequence
I	–  Tighten bolts -1- and -2- to 3 Nm.
II	–  Tighten bolts -1 ... 11- to 23 Nm in the sequence indicated.

–  Install flange shaft (left-side) → Chapter. –  Install flange shaft (right-side) → Chapter. –  Install gearbox support (right-side) → Chapter. –  Check oil level in front final drive → Chapter.