Audi Workshop Service and Repair Manuals

Removing and installing flexible coupling (rear)

Special tools and workshop equipment required

t	Torque wrench -V.A.G 1331-

t	Torque wrench -V.A.G 1332-

t	Engine and gearbox jack -V.A.G 1383 A- with universal gearbox support -V.A.G 1359/2-

Removing   Note t  Repairs on the propshaft should be carried out on a two pillar hoist. t  Before removing, mark the positions of all parts in relation to each other. Reinstall in the same position to avoid excessive imbalance, resulting in bearing damage and rumbling noise. t  Do not bend propshaft; only store and transport fully extended.

–  Separate exhaust system at clamp -arrows- and remove rear section of exhaust system → Rep. Gr.26.

–  Loosen bolts -arrows- on centre bearing of propshaft approx. 2 turns.

–  Check whether there is a factory marking (coloured dot) on the flexible coupling and on the flange for the propshaft on the rear final drive -arrows-. –  If not, mark position of flexible coupling and flange for propshaft on rear final drive in relation to each other -arrows-.

–  Unbolt rear propshaft tube with flexible coupling and vibration damper from final drive -arrows-. –  Carefully detach rear propshaft tube from centring pin of propshaft flange on rear final drive.   Note

t  Do not tilt propshaft when removing; pull off centring pin horizontally. Make sure that the seal in the centring sleeve -arrow- does not become damaged. t  The flexible coupling and vibration damper cannot be separated from each other.

–  Support the propshaft. –  Secure propshaft against falling using belt from universal gearbox support -V.A.G 1359/2-. –  Mark position of flexible coupling (rear) and flange of rear propshaft tube in relation to each other. –  Unbolt flexible coupling from propshaft tube -arrows-. Installing Installation is carried out in reverse sequence; note the following:   Note

t  The seals in flanges of the propshaft -arrow- must not be damaged when removing and installing. t  Renew propshaft if damaged. t  Do not tilt rear propshaft tube; push on horizontally onto centring pin. t  All parts of the propshaft marked in relation to each other must be reinstalled in the same position. t  Tightening torques → Chapter.

Installation position of flexible coupling with vibration damper: t  The shoulder on the outer circumference -arrows- must point away from the propshaft tube. t  Three projecting sleeves on the flange for propshaft on rear final drive and propshaft flange engage in mounting holes of flexible coupling.

–  Attach propshaft to rear final drive so that the markings -arrows- align. –  Installing centre bearing stress-free → Anchor. –  Install exhaust system and perform stress-free alignment → Rep. Gr.26.   Note t  If droning noises occur during driving, note the following:

t  Remove balancing nut and balancing washer -arrows-. t  Then, if necessary, unscrew propshaft with flexible coupling from flange for propshaft on rear final drive, rotate one hole further and screw in again. t  If the droning noises can still be heard, the propshaft must again be rotated and screwed back on.