SEAT Workshop Service and Repair Manuals

Dismantling and assembling differential Removal and fitting of the differential → Chapter.   WARNING When assembling the differential rings, the pinion shaft must be adjusted as well as the crown wheel → Chapter Check the tool and equipment equivalence table according to the applicability between Seat / VW / Audi / Skoda → Chapter

Special tools and workshop equipment required

t	Clutch press -VW 401-, see equivalent → Anchor

t	Clutch press -VW 402-, see equivalent → Anchor

t	Die -VW 407-

t	Compression column -VW 408 A-, see equivalent → Anchor

t	pressure disc -VW 447 H-, see equivalent → Anchor

t	Thrust pad -VW 447 i-

t	Mandrel -VW 295-

t	Thrust pieces for pinion shaft bearing -VW 470-

t	Tube -30 - 14-

t	Thrust blocks -2050-

t	Thrust pad -3005-

t	Tube -3296-

t	Torque wrench -V.A.G 1332-, see equivalent → Anchor.

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

t	Adapter -V.A.G 1582/1-

t	Adapter -V.A.G 1582/8-

t	-1-Interior extractor -Kukko 21/8-

t	-4-Support bracket -Kukko 22/2-

Pulling tapered roller bearing outer race (right-side) out of gearbox housing A  -  Counter-support, e.g. -Kukko 22/2- B  -  Internal puller, 56…70 mm, e.g. -Kukko 21/8- –  After removing, check shims for damage.

Driving outer race for tapered roller bearing (right-side) into gearbox housing

Pulling off inner race for tapered roller bearing (right-side) –  Before setting up the puller, place thrust plate -VW 447 H- on differential cage.

Pressing on tapered roller bearing inner race (left and right)   Note Use the same tools for pressing on tapered roller bearing inner race on left side and right side.   WARNING Wear protective gloves! –  Heat the inner race to approx. 100 °C, position and push to final position.

Pulling off inner race for tapered roller bearing (left-side) –  Before setting up the puller, place thrust plate -VW 447 H- on differential cage.

Pulling tapered roller bearing outer race (left-side) out of cover for final drive A  -  Counter-support, e.g. -Kukko 22/2- B  -  Internal puller, 56…70 mm, e.g. -Kukko 21/8- –  After removing, check shims for damage.

Pressing tapered roller bearing outer race (left-side) into cover for final drive.

Driving crown wheel off differential cage

Heat crown wheel to approx. 100 °C and install. –  When fitting crown wheel, use centralising pins -A- (shop-made tool) to locate.   WARNING Wear protective gloves! –  Allow to cool slightly before screwing in new securing bolts. Then tighten to specified torque.

Install differential bevel gears. –  Fit the complete assembly of thrust washers with gear oil. –  Insert sun wheels. –  Insert planet pinions offset 180° and rotate into position -arrow-. –  Drive differential pinion pin into final position and secure.