SEAT Workshop Service and Repair Manuals

Differential: dismantling and assembling

Special tools and workshop equipment required

t	-T20022- Kit

t	Pressure tool -T20047-

t	Plunger -T20052-

t	-U-40100- Kit

t	-U-40200 A- Kit

t	-U-40300- Kit

t	Plunger -T20027-

t	-T20140- Kit

t	Plunger -T20152-

To avoid premature wear and noise, the roller bearings on a shaft should be replaced at the same time

1 -	Torque converter casing

q	Dismantling and fitting → Chapter

q	Oil pipe: removing and installing → Fig.

2 -	Thrust washer

q	For satellite

3 -

Satellite

q	Fitting → Fig.

4 -	Thrust washer

q	For the planet gear

5 -	Planet gear

q	Fitting → Fig.

6 -	Threaded component

7 -	Support sleeve

q	To hold the satellite shaft

q	Extract and replace with a punch

8 -	Satellite shaft

q	Extract by striking with a punch

q	On fitting, do not damage the thrust washers

9 -	Outer ring of roller bearing

q	Remove → Fig.

q	Fit into the differential housing → Fig.

10 -	Inner ring of roller bearing

q	Remove → Fig.

q	Fit into the gearbox casing → Fig.

11 -	Gearbox casing

q	Differential: removing and installing → Chapter

12 -

Bolt

q

80 Nm

13 -	Differential casing

14 -

Crown

q	Number of teeth → Chapter, Code letters, group numbers, ratios, equipment

15 -	Speedometer drive sprocket

q	Fit the projections of the drive sprocket into the groove in the differential casing, flat side facing outwards

16 -	Inner ring of roller bearing

q	Remove → Fig.

q	Fit → Fig.

17 -	Outer ring of roller bearing

q	Remove → Fig.

q	Fit → Fig.

18 -

Shim

q	Determine thickness → Chapter

Removing and fitting the oil pipe -1- –  Remove the bolts -arrows- from the oil pipe clamps. –  Remove the oil pipe from the torque converter casing. –  On fitting, press the oil pipe into the torque converter box by hand as far as it will go.

Fitting planet gears –  Lubricate the satellite thrust washers and the satellites and fit them. –  Fit the satellites and insert the satellite shaft by tapping. –  Fit a new support sleeve. –  Lubricate the planet gear thrust washers and fit them. –  Fit the threaded component to the planet gears. –  Fit the satellite gears at 180° and rock them -arrow-.

Removing the inner ring of the roller bearing –  Fit tool -U-40300/11- to the base and remove the inner ring of the roller bearing with extractor -U-40100/1-.

Fitting the inner ring of the roller bearing into the gearbox casing –  Use tool -T20047- with tool -T20152- to fit the inner ring of the roller bearing. –  Bolt up tool -T20047- until the inner ring of the roller bearing is fitted.

Removing the outer ring of the roller bearing –  Fit tool -U-40300/13- to the shaft, fit tool -U-40100/1- on it and remove the outer ring of the roller bearing.

Fitting the outer ring of the roller bearing into the differential casing –  Use tool -T20152- with tool -T20027- to fit the outer ring.

Removing the inner ring of the roller bearing –  Locate tool -U-40300/13- on the differential. –  Place extractor -U-40100/1- on tool -U-40300/13-. Remove the bearing.   Note! If the bearing cage breaks on extraction, use tool -T20022- with claws -T20022/48- to remove the internal bearing ring

Inserting the inner ring of the roller bearing by pressure –  Fit the inner ring of the roller bearing into the differential casing with tools -T20052- and -T20024-.

Fitting the outer ring of the roller bearing into the torque converter housing –  Remove the outer ring of the small roller bearing with tool -T20140- Procedure for extracting the outer ring → , General instructions for gearbox repairs.

Press fitting the outer ring of the roller bearing into the torque converter housing