Audi Workshop Service and Repair Manuals

Servicing suspension strut Special tools and workshop equipment required

t  Spring compressor -V.A.G 1752/1- t  Strut holder -V.A.G 1752/2- t  Spring retainer -V.A.G 1752/4- t  Spring retainer -V.A.G 1752/6-

t  Shock absorber set -T10001/3- t  Shock absorber set -T10001/4- t  Shock absorber set -T10001/7- t  Shock absorber set -T10001/11-

Exploded view

1 -	Flange nut

q

50 Nm

q	Always renew

2 -	Shock absorber mounting

3 -

Washer

4 -	Mounting bracket

q	Installation position → Anchor

5 -	Coil spring

q	Removing → Fig. and → Fig.

q	Installing → Fig.

q	Note different running gear versions; see vehicle data sticker → Anchor

q	For correct version refer to → Parts catalogue

6 -	Auxiliary spring

7 -	Protective sleeve

8 -	Protective cap

9 -	Bottom spring seat

10 -	Bottom spring plate

q	Installation position → Fig.

11 -	Shock absorber

q	Renewing → Fig.

q	Note different running gear versions; see vehicle data sticker → Anchor

q	Defective shock absorbers must always be degassed and drained before disposal → Chapter

q	For correct version refer to → Parts catalogue

Explanatory notes on production control numbers (PR Nos.) The shock absorber combination installed in the vehicle is indicated by the corresponding PR number on the vehicle data sticker.

Vehicle data sticker (example) –  -A- is the PR No. for the front axle –  -B- is the PR No. for the rear axle The vehicle data sticker can be found in the spare wheel well and in the Service Schedule. The PR numbers can be used to identify the correct shock absorber combination in the Electronic parts catalogue.

The PR No. for the different running gear versions is indicated by the arrow in the illustration. 1BA = Standard running gear 1BB = Heavy-duty running gear, China 1BE = Sports running gear (20 mm lower than 1BA) 1BD = Sports running gear (Audi S4) 1BR = Comfort / heavy-duty running gear (13 mm higher than 1BA) 1BV = Sports running gear (quattro GmbH) 2MC = Standard running gear (quattro GmbH RS 4) 2ME = Sports running gear (quattro GmbH RS 4)

Removing coil spring –  Clamp suspension strut in a vice. –  Compress coil spring using spring compressor -V.A.G 1752/1- and spring retainers -V.A.G 1752/4- until top spring plate is free.

Removing coil spring –  At the same time ensure that coil spring is correctly seated in spring retainer -V.A.G 1752/4--arrow-.

Removing coil spring –  Remove flange nut from piston rod using special tools -T10001/3-, -T10001/11- and -T10001/7-. –  Take off suspension strut components and compressed coil spring together with spring compressor -V.A.G 1752/1-.

Renewing shock absorber –  Take off protective cap -1- and bottom spring seat -2-. –  Mark position of bottom spring plate in relation to shock absorber. –  Knock spring plate -3- loose using plastic-headed hammer and lift off.

Installation position of bottom spring plate A -  Centre line of bolt connection between shock absorber and track control link I = Left: B = 65° ± 2° II = Right: C = 87° ± 2° –  Install spring plate from the top and knock downwards using a plastic hammer to correspond with the marking made previously. If installing a new shock absorber, transfer marking from old shock absorber. Note different installation positions on left and right sides. The flat cut-away on the spring plate -arrow- must give clearance from body.

Installing coil spring –  Install spring plate, bottom spring seat and protective cap. –  Position compressed coil spring with spring retainer -V.A.G 1752/4- on bottom spring seat. End of spring coil must make contact with stop -arrow-. Maximum permissible misalignment: ± 2°.

Installation position of top spring seat Install mounting bracket with spring seat on compressed coil spring so that spring seat makes contact with end of spring coil -arrow-. Maximum permissible misalignment: ± 2°.

Installing coil spring –  Clamp suspension strut with spring compressor vertically in strut holder -V.A.G 1752/2-. –  Fit component parts of suspension strut. Make sure end of spring contacts stop on upper spring seat. –  Tighten flange nut with special tools → Item. –  Do not slacken spring yet.

Installation position of mounting bracket

–  Release bottom locking lever and turn top spring plate until scale on strut holder -V.A.G 1752/2- is set to 7°. –  Make sure that ends of spring are in contact with stops on top and bottom spring seats. –  Secure locking lever.

Seen in direction of travel: I = Left II = Right A -  Centre line of bolt connection between shock absorber and track control link –  Set angle B as shown. B = 7°

–  Arm of strut holder -V.A.G 1752/2--arrow- must be in line with centre of mounting bracket. –  Now slacken off and remove spring compressor 1752/1. –  Check adjustment and repeat procedure if necessary. Maximum permissible misalignment: ± 2°.