Front
Control arm front, replacement
Special tools:
951 2050 BEVEL PROTRACTOR 951 2050 Bevel Protractor
951 2923 Hydraulic hole cylinder 951 2923 Hydraulic Hole Cylinder
999 5045 COMPRESSION HOOK 999 5045 Compression Hook
999 7251 Press tool 999 7251 Press Tool
999 7231 Nut 999 7231 Nut
999 7062 Separator 999 7062 Separator
999 7076 Lever 999 7076 Lever
999 5467 SOCKET 999 5467 Socket
Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.
Preparations
Note! When replacing the left control arm, the engine must be lifted out if the car is equipped with transmission 4T65. For the right hand control arm the engine must be lifted for the screw on the control arm front bushing to be replaced.
Disconnecting drive shaft
Remove:
- the wheel
- the drive shaft screw. Use a screwdriver as a counterhold on the brake disc
Slacken off the drive shaft in the hub by knocking the drive shaft into the hub approximately 10-15 mm.
Use a brass drive punch and copper hammer.
If the driveshaft is securely attached in the hub, use a press tool together with hole cylinder.
- 999 7251 Press tool 999 7251 Press Tool
- 951 2923 Hydraulic hole cylinder 951 2923 Hydraulic Hole Cylinder
Disconnecting ball joint
For vehicles with aluminum control arms:
- Remove the nut on the ball joint. Use a torx wrench as a counterhold.
For vehicles with steel control arms:
- Remove the nut from the ball joint.
999 7231 Nut 999 7231 Nut
Install the nut on the ball joint with a clearance to the control arm of 1.5 mm.
999 7062 Separator 999 7062 Separator
Align the puller with the control arm and nut.
Tighten the puller so that the ball joint releases from the control arm.
Releasing the spring strut
For all:
- Press down the control arm 999 7076 Lever 999 7076 Lever
- Position the catch at (1). Release the spring strut from the control arm.
Note! If the catch is placed by (2) the rubber boot on the ball joint may be damaged.
- Press out the drive shaft completely. Hang up the spring strut using a retaining strap against the jacking point. Do not damage the ball joint boot. Hang up the drive shaft from a hook 999 5045 COMPRESSION HOOK 999 5045 Compression Hook.
- Remove the splash guard under the engine.
Caution! Later models have a rubber seal on the constant velocity joint. Do not damage the seal. It will be needed for installation.
Removing the left control arm
Applies to cars equipped with the 4T65 EV/GT transmissions:
- Remove the screw for the front motor mounting.
For all:
- Lift up the left-hand side of the engine approximately 25 mm to expose the control arm screw. Use a mobile jack.
Note! Use a wooden block as a shim.
Remove:
- the screws and the nut for the control arm in the sub-frame
- the control arm.
Removing the right control arm
Applies only to cars with 6 cylinder engines:
- Remove the vibration damper.
For all:
- Remove both screws for the right-hand engine mounting.
- Lift the right-hand side of the engine approximately 25 mm to expose the control arm screw. Use a mobile jack.
Note! Use a wooden block as a shim.
Remove:
- the screws and the nut for the control arm in the sub-frame
- the control arm.
Installing the right control arm
- Install the control arm. Use new screws
- Tighten the front screws. Tighten to: Tightening torque [1][2]Mechanical Specifications. Use protractor 951 2050 BEVEL PROTRACTOR 951 2050 Bevel Protractor
- Tighten the rear screw and the nut. Tighten to: Tightening torque [1][2]Mechanical Specifications
- Lower the engine
- Remove the mobile jack
- Tighten the screws on the right engine mounting. Tighten to 35 Nm. Angle-tighten 90°. Use new screws.
Applies only to cars with 6 cylinder engines:
- Install the oscillation damper. Use new screws. Tighten according to: Tightening torque Tightening Torque
Installing the left control arm
For all:
- Install the control arm. Use new screws
- Tighten the front screws. Tighten to: Tightening torque [1][2]Mechanical Specifications. Use protractor 951 2050 BEVEL PROTRACTOR 951 2050 Bevel Protractor
- Tighten the rear screw and the nut. Tighten to: Tightening torque [1][2]Mechanical Specifications
Applies to cars equipped with the 4T65 EV/GT transmissions:
- Lower the engine
- Tighten the front engine mounting. Tighten to M10, 50 Nm.
- Remove the mobile jack
Installing the drive shaft
For all:
- Clean the drive shaft splines
- Check that the sealing ring on the driveshaft is in place.
- Align the drive shaft in the hub.
- Install a new screw to the driveshaft loosely.
Installing the ball joint
- Align the ball joint in the control arm
Tightening the ball joint
For vehicles with aluminum control arms:
- Install a new nut on the ball joint. Tighten. See: Tightening torque [1][2]Mechanical Specifications. Use a torx wrench as a counterhold.
Note! Make sure that the mating surfaces on the ball joint and control arm are clean.
For vehicles with steel control arms:
- 999 5467 SOCKET 999 5467 Socket
- Use socket as adapter for the torque wrench or a ring wrench adapter that is designed for the torque wrench.
- Install a new nut. Tighten in accordance with: Tightening torque [1][2]Mechanical Specifications
- Rust protect the thread outside the nut.
Tightening the drive shaft
For all:
- Tighten the drive shaft. See applicable specifications. Use a screwdriver as a counterhold on the brake disc.
Install:
- the splash guard under the engine
- the wheels. See Installing wheels Service and Repair.