Control Arm
Subframe, stabilizer bar, control arms, assembly overview- Also refer to Subframe, Stabilizer Bar, Control Arms, Assembly Overview
General notes:
- Load bearing components or parts of the suspension must not be welded or straightened.
- Do not attempt to move the vehicle when the drive axle has been removed, as this will result in wheel bearing damage. If the vehicle does have to be moved, always note the following points:
- Install outer joint in place of drive axle.
- Tighten outer joint to 50 Nm (37 ft. lbs.).
- Bonded rubber mountings can only be turned to a limited extent. The bolted connections on the suspension links should therefore only be tightened when the vehicle is standing on the ground.
1 - Subframe retaining bracket
- Caged nut cannot be retrofitted. If nut is damaged, bracket must be replaced as a complete unit.
2 - Welded nut in body
- Thread in body can be repaired with wire thread insert according to DIN 8140 (Hell -Coil). Thread insert must be the same length as the thread in the body.
3 - Mounting
- Two - piece version; note installation position go to Fig 2
- Removing and installing go to Cross-Member, Service and Repair
4 - Hex bolt
- M14 x 1.5 x 63
- Tighten to 100 Nm (74 ft. lbs.) and turn 90° further
- Replace each time after removing
6 - Rear control arm mounting
- Installation position
- Pressing out and in
7 - Hex bolt
- M12 x 1.5 x 70
- Tighten to 70 Nm (52 ft. lbs.) and turn 90° further
- Replace each time after removing
8 - Self - locking nut
- Tighten to 45 Nm (33 ft. lbs.)
- M12 x 1.5
- Replace each time after removing
9 - Ball joint
- Checking go to Ball Joint, Testing and Inspection
- Removing and installing go to, Ball Joint, Service and Repair
- Mark installation position. If replaced, set to center of elongated hole and check toe setting/camber
- Wheel alignment; Refer to Alignment
10 - Hex nut
- Tighten to 80 Nm (59 ft. lbs.)
- M10
- Replace each time after removing
11 - Control arm
- Removing and installing; Refer to Control Arm.
12 - Hex bolt
- Tighten to 25 Nm (18 ft. lbs.)
- M8 x 20
13 - Linkage for headlight range control
- Checking adjustment
14 - Front control arm mounting
15 - Hex bolt
- M14 x 1.5 x 95
- Tighten to 100 Nm (74 ft. lbs.) and turn 90° further
- Replace each time after removing
16 - Connecting link
- Between stabilizer bar and suspension strut
17 - Hex nut
- Tighten to 100 Nm
- M12 x 1.5
- Replace each time after removing
18 - Stabilizer bar
- Subframe must be lowered to remove and install
19 - Hex bolt
- M12 x 1.5 x 78
- Tighten to 70 Nm (52 ft. lbs.) and turn 90° further
- Replace each time after removing
20 - Hex bolt
- Tighten to 25 Nm (18 ft. lbs.)
- M8 x 48
21 - Hex bolt
- Tighten to 50 Nm (37 ft. lbs.)
- M10 x 70
22 - Hex bolt
- Tighten to 50 Nm (37 ft. lbs.)
- M10 x 30
23 - Pendulum support
24 - Subframe
- Component location go to Fig. 3
- Removing and installing go to Cross Member, Service and Repair
25 - Rubber mounting
26 - Clamp
27 - Hex bolt
- Tighten to 25 Nm (18 ft. lbs.)
- M8 x 20
Fig. 1 Adjusting linkage for headlight range control
Distance - a - = 19 mm
Notes: Only for brackets with elongated hole!
Fig. 2 Installation position of upper and lower sections of subframe mounting
A - Upper section of mounting without collar: ribs go toward body.
B - Lower section of mounting with collar: goes toward bolt head.
Fig. 3 Crossmember component location
- Always replace bolt after removing.
- Tightening torque: 30 Nm + turn additional 90°.
- Install using locking compound D 000 600 A2.
F - Driving direction
1 - Carrier
2 - Install rivet nuts M10 using VAG1765B
3 - Crossmember: install with printed "L" (left) in driving direction
Foam strips toward bottom (arrow).
4 - Hex bolt M10 X 45
VAG1765B pliers
Control arm, removing and installing
Removing
- Take off wheel.
- Remove noise insulation.
Notes: Mark positions of nuts, otherwise wheel alignment will have to be checked.
- Remove lower nuts on ball joint.
- Remove hex bolts - 1 - and - 2 - and take out control arm.
Notes: Bolt - 1 - is secured with a nut at the top.
When installing, note the following points in particular:
- Install control arm in subframe and secure in place.
- Secure ball joint to control arm (nuts on old marks).
Tightening torques:
Ball joint to control arm (use new nuts) 80 Nm (69 ft. lbs.)
control arm to subframe (use new bolts/nut) 70 Nm (52 ft. lbs.) + 90°