Pic. 4.21. Upper arm front suspension: 1 - bolt (anti-lock braking system wheel speed sensor); 2 - bolt (brake hose bracket); 3 - nut (Front stabilizer); 4 - front upper ball joint of the lever; 5 - bolt (front upper arm); 6 - front upper arm; 7 - dynamic damper; 8 - clamp; 9 - protective cover
Removing
Support the steering knuckle using a jack.
Pic. 4.22. Separation of the ball joint from the swivel
Separate the ball joint from the steering knuckle using a special tool (pic. 4.22).
Remove the three nuts at the top of the front shock absorber.
Remove the front shock absorber and coil spring towards the outside of the vehicle.
Pic. 4.23. Removing the front upper arm
Loosen the mounting bolts and remove the front upper arm (pic. 4.23).
Examination
Check the lever for damage, cracks and deformation.
Check up the moment of resistance to rotation of a spherical joint.
Rotate the ball joint pin five turns.
Pic. 4.24. Checking the moment of resistance to rotation of the ball joint
Measure the torque resistance using a suitable socket wrench and torque wrench (pic. 4.24).
If the measurement is out of specification, replace the lower control arm assembly.
Maximum moment of resistance: 1.5 Nm.
Installation
Wipe grease off ball pin.
Fill the inside of the new protective boot with grease.
Install the cover on the ball joint.
Pic. 4.25. Installing a New Ball Joint Boot Clamp
Install the new clamp using the special tool (pic. 4.25).
Make sure the clip is securely seated in the slot.
Wipe off excess grease.
Install the rest of the components in the reverse order of removal.