SEAT Workshop Service and Repair Manuals > Leon Mk1 > Manual gearbox 020 5-speed | Final drive, differential, differential lock | Differential crown: removing and installing

Differential crown: removing and installing

Special tools and workshop equipment required

t	Electric blower -SAT 1416-

t	Digital thermometer -SAT 4002-

t	Gearbox repair set -U-40200-

Removing

Note!

t	Protect the roller bearings from damage and metal filings

t	Before and after drilling the rivets, thoroughly clean the differential casing

–	Drill the rivet heads from the bevelled side, with a Ø 12 mm drill bit.

–	Remove the rivets from their holes with a drift.

–	Heat the differential crown with the -SAT 1416- electric lower to 120 °C. Check the temperature with a digital thermometer -SAT 4002-.

–	Place the differential casing in a press and seaparate the crown from the case. Use tool -U-40200/18-, locating the bevelled side facing the differential casing.

Before fitting the differential crown, consult the section Code letters, assignement of groups, ratios, filling amounts → Chapter

–	Clean the contact surfaces of the crown wheel and differential casing thoroughly. Use a wire brush and a scraper. Do not use emery cloth or sandpaper. The contact surfaces must be totally clean and freee from oil and grease.

Note!

t	To fit the crown correctly onto the differential casing work rapidly without interruptions fitting it to the limit

t	If both components lock or jam on fitting, stop the assembly process

Assembly position:

Groove -A- must be facing the part of the differential casing that is bolted.

–	Heat the differential crown with the -SAT 1416- electric lower to120 °C. Check the temperature with a digital thermometer -SAT 4002-.

–	Fit the differential crown onto the differential casing in the correct assembly position . Use bolts -A- from the repair kit to guide the crown during assembly on the differential casing.

–	Bolt both elements with the bolts from the repair set and tighten to 65 Nm torque. → Parts Catalogue.

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