After installation, the front suspension beam must undergo a geometric check.
Withdrawal
1. Remove the bottom cover of the engine compartment, refer to Section Removal and installation of the bottom cover of an impellent compartment.
2. Raise the engine and unscrew the engine mounts from the beam on the left and right, refer to Section Removal and installation of the oil pan.
3. Mark with paint the position of the corresponding front wheel relative to the hub. This will allow the assembly to install the balanced wheel in its original position. Loosen the wheel bolts with the vehicle on the ground. Raise the front of the car, put it on stands and remove the front wheel.
4. Turn away bolts of fastening of the lower amplifier -1- (arrows in the illustration).
5. If there is a clearance sensor, disconnect it from the beam (arrow illustration).
6. Disconnect the transverse lever -1- from the engine beam on the left and right (arrows in the illustration).
7. Loosen the nuts (arrow illustration) left and right. Unclip the transverse arm ball joint -1- using a plastic knuckle.
8. Turn away bolts of fastening and remove a steering mechanism -1- from a beam of a suspension bracket -2- (arrows in the illustration).
9. Install a garage lift with a wooden spacer in the center under the beam. Support the beam.
The illustration shows the engine lift with spacer BMW-312220.
10. Turn away bolts of fastening of a beam of a suspension bracket to a beam of the engine.
11. Carefully lower the beam using the garage lift.
Installation
12. Establish a beam of a suspension bracket and fix a beam of the engine with new bolts with the efforts specified in Specifications.
Fasten both rear bolts first, with respect to the direction "forward".
13. Fasten the steering gear to the suspension beam with new self-locking nuts to a torque of 42 Nm.
14. Clean the trunnion on the ball joint of the transverse arm, as well as the hole in the suspension beam, from grease. Insert the hinge into the hole in the beam and press the lifter up. Thus, the nut is easier to tighten. The tightening torque is 80 Nm.
15. Fasten the transverse arm holder to the engine beam on the left and right with a torque of 60 Nm.
16. If the clearance sensor was removed, fix it on the suspension beam.
17. Bolt the lower amplifier to 60 Nm.
18. Bolt the engine mounts to the engine beam with a torque of 47 Nm.
19. Install the bottom cover of the engine compartment, refer to Section Removal and installation of the bottom cover of an impellent compartment.
20. Remove the engine hoist.
21. Reinstall the front wheel so that the markings made during removal match. Pre-lubricate with a thin layer of bearing grease the centering belt of the wheel disk on the hub. Do not grease wheel bolts. Replace rusty bolts. Wrap bolts. Lower the vehicle onto the wheels and tighten the bolts crosswise to 100 Nm.
22. Measure the geometrical parameters of the chassis at the service station.