Removing and installing prop shaft — AUDI

Special tools, testers and auxiliary equipment required

Assembly tool 3298

Observe notes=> Page
39-76
.

Removing

Remove cross member, if fitted, underneath exhaust system.
Remove rear section of exhaust system as from clamp(s):

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4-cylinder Engine (5-valve), Mechanical Components
Removing and installing exhaust system parts

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Removing and installing exhaust system

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Removing and installing exhaust system

=> 6-cylinder Engine (5-valve), Mechanical Components; Repair Group 26; Removing and installing exhaust system parts
6-cylinder Engine (5-valve), Mechanical Components
Removing and installing exhaust system parts

Removing

Remove heat shield above propshaft.

Remove heat shield for propshaft from cover for Torsen differential -arrows-.

Check for presence of a factory mark (coloured dot -arrows-) at the prop shaft and at the rear axle drive flange/prop shaft. If there is no mark, make a coloured mark on rear axle drive -B- to indicate the position of prop shaft flange -A-.

Note:

This marking is only required if same propshaft is to be re-installed later.

Release fastening bolts for prop shaft flange.

Cut out the assembly device 3298, as illustrated in Fig.
Remove the three upper securing bolts from each constant velocity joint on the propshaft.
Loosen securing bolts of centre propshaft mounting slightly.

Engage assembly device 3298 and tighten plastic nuts.

Note:

Never fit assembly appliance onto balance plates.

Remove securing bolts of flange to gearbox and to rear final drive as well as securing bolts of centre propshaft mounting.
Slide propshaft together towards rear final drive. The constant velocity joints move along their axes.

Guide out propshaft with assembly appliance past gearbox flange.

Note:

Only transport and store propshaft when extended.

Installing

Installation is carried out in the reverse order, when doing this note the following:

Notes:

It is essential that the locking fluid remaining in the threads in the flange shafts on the gearbox and rear final drive is cleaned out after removing the propshaft. Otherwise there is a danger that the new bolts will seize when they are screwed in and then shear if they have to removed later.
The threaded holes can be cleaned with a thread tap.
Renew gaskets on flange shafts (detach protective foil and stick gasket onto flange shaft). The adhesive surface must be free of grease.

To prevent imbalance, install flanges of prop shaft -A- and rear final drive -B- in such a way that the factory markings (or coloured markings made on removal) are in a line -arrows-.
If a new propshaft is installed and if the factory colour marking on the flange of the rear final drive is no longer visible the radial run-out on the propshaft flange must be measured => Page
39-86
and the colour marking on the propshaft placed in line with the new marking on the flange.
After removing the propshaft from the rear final drive, the additional balance disc (thicker washer) that may be located between the lock plate and the bolt head must not be reinstalled.
Replace prop shaft bolts (self-locking).

Adjust propshaft after installing => Page
39-88
.
Stress free alignment of exhaust system

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4-cylinder Engine (5-valve), Mechanics
Removing and installing exhaust system parts, Stress-free alignment of exhaust system

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Tightening torques

Component · Nm
Propshaft to gearbox / (Drive flange) · 55
Prop shaft to final drive / (input flange) · 55
Propshaft centre mounting to body · 23
Heat shield for propshaft to gearbox · 23
Cross member to body · 25
Nuts for clamp · 40