Audi Workshop Service and Repair Manuals

Renewing oil seal for flange shaft (left-side)   Note A defective oil seal allows gear oil to enter the torque converter bellhousing. Special tools and workshop equipment required

t  Used oil collection and extraction unit -V.A.G 1782-

t  Oil seal extractor lever -VW 681-

t  Thrust piece -T10139- Procedure l  Gearbox must be removed and secured to engine/gearbox support → Chapter.   Note t  Rules for cleanliness when working on the automatic gearbox → Chapter. t  General repair instructions → Chapter.   Caution Risk of damage to the gearbox. The gearbox must not be placed down on the ATF cooler or ATF oil pan. –  Place used oil collection and extraction unit -V.A.G 1782- below gearbox. –  Remove flange shaft (right-side) → Chapter.

–  Unscrew bolts on cover for front final drive in the reverse sequence to the tightening sequence shown. –  Remove cover for front final drive together with outer race for tapered roller bearing and shim.   Note The thickness of the 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 The thickness of the 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 must be applied behind the two sealing lips of the oil seal. Do not position at outer circumference of oil seal as the contact surface in the gearbox housing could be damaged. 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.

–  Insert shim -2- and tapered roller bearing outer race -1- for differential onto stop in gearbox housing by hand.

–  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 front final drive cover: –  Lubricate shim and outer race for tapered roller bearing with gear oil and insert in front final drive cover as far as the stop.

–  Tighten bolts for front final drive cover → Fig.. –  Install flange shaft (left-side) → Chapter. –  Install flange shaft (right-side) → Chapter. –  Fill up gear oil in gearbox after repairs → Chapter.