SEAT Workshop Service and Repair Manuals

Dismantling and assembling differential

Special tools and workshop equipment required

t	Tightening plate -VW 402-

t	Die -VW 408 A-

t	Die -VW 412-

t	Thrust plate -40-105-

t	Thrust plate -3005-

t	Only gearboxes with right stub shaft

t	pressure tool -VW 473-

t  Only gearboxes with right flange shaft

t  Tube element -VW 415 A-

t	Tube -3259-

t	Tube -3296-

t	Tube -3345-

t	Roller bearing bush extractor -V.A.G 1582-

t	Adapter -V.A.G 1582/6A-

t	Inside extractor -1 - Kukko 21/7-

t	Extractor -2 - Kukko 18/1-

t	Splitter -3 - Kukko 17/1-

t	Counter-support -4 - Kukko 22/2-

Pulling tapered roller bearing outer race out of clutch housing A -  Counter-support, e.g. -Kukko 22/2- B -  Internal puller 46...58 mm, e.g. -Kukko 21/7-   Note After pulling out, renew washer.

Pressing tapered roller bearing outer race into clutch housing –  First insert washer.   Note Observe installation position of washer. Shoulder on inner diameter faces seal.

Removing the inner ring of the roller bearing –  Before setting up pulling device, set thrust plate -40-105- on differential housing.

Pressing on tapered roller bearing inner race

Removing the inner ring of the roller bearing A -  Puller, e.g. -Kukko 18/1- B -  Splitter 12...75 mm, e.g. -Kukko 17/1-

Gearbox with right stub shaft: Drive in the inner ring and conical roller bearing unit –  Set smaller outer diameter of press tool -VW 473- on tapered roller bearing inner race. Cage with tapered rollers must be easy to turn during pressing.

Gearbox with right flange shaft: Inserting the inner ring of the roller bearing by pressure Cage with tapered rollers must be easy to turn during pressing.

Pulling outer race for tapered roller bearing out of gearbox housing A -  Counter-support, e.g. -Kukko 22/2- B -  Internal puller 46...58 mm, e.g. -Kukko 21/7-

Fitting the outer ring of the roller bearing into the gearbox casing –  Support gearbox housing with tube -3345- directly below bearing mounting.

Removing and installing spring pin for differential pinion pin Detaching –  Cover tapered roller bearing inner race to prevent possible damage and ingress of metal particles. –  Remove the tension sleeve using a chisel, apply pressure to the groove for this purpose. Installation –  Drive into differential cage to stop.

Installing differential bevel gears –  Lubricate one piece thrust washer with gear oil and install. –  Install both sun wheels and secure (e.g. with flange shaft). –  Insert planet pinions offset 180° and pivot into position. –  Press in differential pinion pin -arrow A- to first planet pinion. –  Place threaded pieces -arrow B- in sun gears. Installation position: rebate faces differential box gear train. –  Drive differential pinion pin into final position and secure with spring pin.