Upper Rear Control Arm, Removing And Installing (Sport Wagon Models) - BMW 5251 Service Manual

330-23
Rear
Suspension
Remove rear control arm:
Remove inner control arm bolt (A).
Detach plastic wiring harness support
(B).
*
Remove outer control arm ball joint nut ( C ) . Press ball joint
out of rear wheel bearing carrier.
Installation is reverse of removal, noting the following:
Always use new self-locking nuts.
Malte sure all threaded bolts, nuts and mating surfaces are
clean.
Inner control arm mounting bolt must thread to rear (bolt
head at front).
Tighten fasteners to final torque only afler vehicle has
been lowered and suspension has settled.
Have car professionally aligned when job is complete.
Tightening
torques
Control arm
to
subframe (M12) 110 Nm (81 ft-ib)
Control arm ball joint to wheel bearing 142 Nm (105 ft-lb)
carrier (M14)
Quick coupling screw
to
air shock absorber
2 Nm (18 in-lb)
Road wheel
to
hub
120-flONm
(89
i7
ft-lb)
Upper rear control arm, removing and
installing (Sport Wagon models)
C A U T I O G
Disable air supply pump by disconnecting electrical plug be-
fore perlorming any repairs. Pump is located beneath a cover
under the spare tire in the floor of the carqo compartment.
-
Raise rear end of car and remove wheel.
WARNING
-
Make sure the car is firmly supported on jaclc stands de-
signed for the purpose. Place jaclc stands underneath struc-
tural chassis points. Do not place jack stands under
suspension parts.
Models with rear coil springs: Remove cargo compartment
floor carpet.
Worlting at top of coil spring, press center cap down or pry
upward to remove. If pushed down, remove from inside coil
spring from under car.