Suspension strut and upper control arm, removing and installing Page 1 of 12
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Suspension strut and upper
control arm, 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
- Loosen wheel bolts.
- Raise vehicle on lift.
- Remove wheel.
- Loosen bolted connection of lower control arm to suspension strut
(arrow -1-) page 42-40 .
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- Loosen bolts from wheel bearing housing to upper control arm (arrow -
1-) page 42-42 .
- Remove suspension strut mounting bracket bolts (arrows), push wheel
bearing housing down and remove suspension strut along with control
arm.
- Remove bolts from shock absorber to upper control arm ( page 42-
42 ), and remove control arm.
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Installing
- Install in reverse order of removal.
CAUTION!
Bonded rubber bushings can only be turned
to a limited extent. The bolted connection
between the wheel bearing housing to upper
control arm and the connection between the
shock absorber to lower control arm must
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
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Suspension strut, servicing
Disassembling and assembling suspension strut
page 42-71
1 -
Suspension strut mounting bracket
Different versions on left and right-sides
2 -
Self-locking nut
Always replace
70 Nm (52 ft lb) + 1/4-turn (90 )
3 -
Damper ring
Install with stop resting against end of
spring
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4 -
Coil spring
Always replace on both sides
Different versions depending on
suspension version vehicle data label,
page 42-46 to determine correct spring
version
Install on shock absorber and turn so that
end of spring coil is resting against stop of
lower spring retainer
Installation position: colored marking on
spring faces down toward spring retainer
If suspension strut is correctly installed,
bottom end of spring on left side faces
toward rear; bottom end on right-side faces
toward front
5 -
Bolt
Always replace
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6 -
Gas shock absorber
Different versions parts catalog
microfiche
Supplied as replacement part with lower
spring retainer pressed on
Different versions depending on
suspension version vehicle data
label, page Page 42-46
Malfunctioning shock absorbers must be
disposed of properly
Checking for leaks and noises Special
Information binder
Installation position:
Angle between suspension strut mounting
bracket axis -A- and shock absorber axis -
B- = 0
Angle between axis -B- and axis -C- = 21
2 ; Pay attention to this when
assembling
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Disassembling and assembling suspension
strut
Disassembling
- Remove suspension strut page 42-65 .
- Install suspension strut into VAG1752 spring tensioner.
Note:
Illustration shows left-hand suspension strut.
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- Insert VAG1752/1 spring compressor.
WARNING!
Make sure the coil spring is seated correctly in the VAG1752/3
adapter (arrow).
- Compress coil spring using VAG1752/1 spring compressor until upper
shock absorber mount is free.
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- Remove nut (arrow) and bolt.
- Remove suspension strut mounting bracket and damper ring.
- Remove compressed spring together with VAG1752/1 spring
compressor.
- Remove faulty shock absorber from VAG1752 suspension strut
tensioner and dispose of properly.
Assembling
- Clamp new shock absorber into VAG1752 suspension strut tensioner,
as shown.
Note:
Pay attention to the position of the step on the lower spring retainer
(arrow).
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- Compress new coil spring using VAG1752/1 spring compressor.
- Fit compressed coil spring onto shock absorber.
Colored marking on coil spring must be facing down toward spring
retainer
End of spring coil should be resting against stop of spring retainer
(arrow)
- Install damper ring so that end of spring coil is resting against stop of
damper ring (arrow).
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- Install suspension strut mounting bracket.
- Install securing bolt into suspension strut mounting bracket and screw
on nut (arrow) loosely.
Note:
Nut faces in direction of travel!
- Install locating bolt -A- into suspension strut mounting bracket and
secure loosely with nut.
- Turn suspension strut mounting bracket until pointer on degree scale
(on VAG1752 suspension strut tensioner) is pointing to 21 2 (with
locking bolt -D- loose) and ...
L - left-hand suspension strut
R - right-hand suspension strut
Note:
Illustration shows the position of the degree scale when assembling the
right-hand suspension strut.
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- ... move lever arm -C- with locating bolt -A- perpendicular to height
adjuster -B-.
- Tighten locking bolt -D-.
- Relieve tension from compressed coil spring and remove VAG1752/1
spring compressor.
- Remove locating bolt -A- from suspension strut mounting bracket.
- Tighten nut (arrow).
Tightening torque: 70 Nm (52 ft lb) + 1/4-turn (90 )
- Remove suspension strut from VAG1752 suspension strut tensioner.
Note:
Illustration shows right-hand suspension strut.
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