air suspension AUDI A4 1998 B5 / 1.G Suspension Rear Struts Remove And Install Workshop Manual

42-24


Suspension strut, removing
and installing

Removing

Vehicle must be standing on its wheels
above vehicle lift

- Remove wheel trim.
On light alloy wheels use puller in vehicle tool kit to remove trim cap
- Raise vehicle.
- Remove wheel.

Repair Manual, Body Interior, Repair Group 72

Note: - Unbolt suspension strut from axle beam page 42
-2 , items -6- and -
8-.
- Remove rear seat backrest side bolster cover or backrest:- Unbolt upper suspension strut mount page 42
-2 .
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In addition to the bolted connection, the suspension strut is also attached
to the body by four retaining lugs.
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Installing
Note:
When installing, make sure that the retaining lugs engage properly.
CAUTION!
The bonded rubber bushings can only be turned to a limited extent.
The bolted connections between the shock absorbers and the rear
axle should therefore only be tightened when the vehicle is standing
on the ground. Otherwise the bonded rubber bushings will be
subjected to a torsional stress resulting in shortened service life - Turn suspension strut until retaining lugs are positioned above
recesses.
- Pull suspension strut downward out of its mount.
- Install in reverse order of removal.
- Replace gasket on upper spring plate. Thoroughly clean all sealing
surfaces
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Suspension strut, servicing

Component locations
CAUTION!
Part numbers are listed here for reference only.
Always check with your Parts department for
the latest information. 1 -
Cap
2 -
O-ring
Coat with silicone grease, Part No. G 000
405 A2
3 -
Self-locking nut Always replace25 Nm (18 ft lb)
4 -
Dished washer
5 -
Mounting ring Make sure installation position is correct
when installing
6 -
Gasket (foam) Always replace
7 -
Upper spring retainer
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9 -
Spacer tube
10 -
Mounting ring
Make sure installation position is correct
when installing
11 -
Lower washer or cup Suspension versions 1BA, 1BP and 1BE
have lower washer Suspension version 1BB has cup
12 -
Ring Suspension version 1BB has different
version
13 -
Auxiliary spring
14 -
Boot mounting ring
15 -
Boot
16 -
Protective cap Suspension version 1BB has different
version
17 -
Spring Different versions depending on
suspension version vehicle data label, page 42
-5
Always replace springs in pairsInstall with color marking at bottom
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CAUTION!
Do not damage the surface of the spring when
driving on the lower spring base - 19 - and the
spring retainer - 18 - during assembly. 18 -
Spring retainer
19 -
Lower spring base
20 -
Lower spring seat
21 -
Gas shock absorber
Different versions parts catalog
microfiche Can be replaced individuallySupplied as replacement part with lower
spring retainer pressed on Different versions depending on
suspension version vehicle data label, page 42
-5
Malfunctioning shock absorbers must be
disposed of properly
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42-30

Disassembling and assembling suspension
strut

Note:
Pay attention to the different components used in
the various suspension versions (e.g. "Standard",
"Sport" and "Heavy Duty" suspensions).

Disassembling

- Clamp VAG1752/2 spring mounting tool in
vise.

- Install shock absorber into VAG1752/2 spring mounting tool.
- Use screwdriver to pry out cap page 42
-26
, item -1-.

WARNING!
Make sure the coil spring is seated correctly in the VAG1752/3 - Place VAG1752/1 spring compressor onto coil spring.
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Assembling
Note:
The left and right-side suspension struts are identical parts. - Compress coil spring using VAG1752/1 spring compressor until upper
spring retainer is free.
- Remove self-locking nut from piston rod (counter hold using hex
wrench).
- Remove appropriate components.

Clamp shock absorber in VAG1752/2 spring mounting tool.

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CAUTION!
Do not damage the surface of the spring when driving on the lower
spring base - 19 - and the spring retainer - 18 -. - Turn lower spring base and spring retainer ( page 42
-28
, items - 18
- and - 19 -) as necessary so that end of spring contacts stop.
- Carefully release compressed coil spring.
- Make sure that coil spring and upper and lower spring retainers are
correctly positioned.
- Remove VAG1752/1 spring compressor after it is free.
- Unbolt VAG1752/8 adjustment gauge for struts and remove.
- Remove suspension strut from VAG1752/2 spring mounting tool.
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42-37

Information on weight codes (code number)
Spring/shock assemblies will be classified
according to weight codes (code number) so that
suspension components can be matched easily.
The spring/shock assembly installed in the
vehicle is indicated by the weight code on the
vehicle data label.

Example of vehicle data label
The vehicle data label is located in the spare wheel well and in the vehicle
Maintenance booklet.
The weight codes can be used to identify the correct spring/shock
assemblies on the parts catalog microfiche. A - Weight code for front suspension
B - Weight code for rear suspension
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