Audi Workshop Service and Repair Manuals

Removing and installing centre differential housing and centre differential - bolted propshaft Special tools and workshop equipment required

t  Used oil collection and extraction unit -V.A.G 1782- t  For sealant, refer to → Electronic parts catalogue

Removing with gearbox in vehicle The centre differential housing can also be removed when the gearbox is in the vehicle. –  Make preparations according to specific model → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.39. Removing with gearbox removed –  Secure gearbox to engine and gearbox support -VAS 6095- → Chapter. Continued for gearbox removed or installed

–  Place used oil collection and extraction unit -V.A.G 1782- below gearbox. –  Remove bolts -1 … 4- and carefully detach centre differential housing; gear oil (MTF) will drain off.

Caution Risk of damage to the centre differential. t  Pull the centre differential housing slowly and carefully towards the rear off the gearbox. The centre differential may otherwise fall out of the gearbox. t  A centre differential which has fallen to the ground can no longer be installed. –  Remove spring -3-, shim(s) -4- and dished spring -5-. –  Detach centre differential -2- towards rear.

If bearing plate -1- remains behind in centre differential housing, proceed as follows:   Caution Risk of damage to the sealing surface of the centre differential housing. Tap the housing in several places with a hammer. –  Grip one of the side ribs on bearing plate -1- with pliers and pull off in direction of -arrow A-. –  While doing so, carefully tap alternate sides of housing -arrows B- with a rubber-headed hammer. Installing Installation is carried out in reverse sequence; note the following: l  Tightening torques → Chapter „Exploded view - centre differential housing - bolted propshaft“   Note Renew the bolts for the centre differential housing. –  Thoroughly clean both housing joint surfaces; they must be free from oil and grease.

–  Apply bead of sealant -arrow 1- evenly and not too thick on housing joint surface; for sealant refer to → Electronic parts catalogue. –  To avoid contact corrosion, apply a ring of sealant around each bolt hole -arrow 2-. –  Lightly lubricate fitting surfaces for bearing plate with gear oil (MTF).

–  Check that spacer sleeve -2- and shim -1- are fitted on output shaft.

–  Lightly lubricate surfaces of both races on outside of bearing plate with a small quantity of gear oil (MTF). –  Insert bearing plate. l  Installation position: shoulder of bearing plate -arrow A- must engage in recess on intermediate gearbox housing -arrow B-.

–  Fit centre differential -2- onto gearbox -1-. –  Insert spring -3- in centre differential. –  Apply a small quantity of grease to dished spring -5- and shim(s) -4- and secure in place in centre differential housing -6-. l  Installation position of dished spring: convex side (which curves outwards) faces flange shaft.

–  Press centre differential housing fully onto intermediate gearbox housing, keeping it centred, and hold in place. –  Tighten bolts for centre differential housing → Fig..