BMW 1989-1995 525i Service Manual page 282

310-6
FRONT SUSPENSION
00 1"96
Fig . 8. Control arm ball joint rarrowi,
CAUTlON -
Take care not to damage the ball /oint threads If
the control arm is to be reused.
If
necessary. press
the ball joint out using BMW special tool no.
3 1 I
1 10
or
an
eouivetent
press.
5. Working at the other end of the control arm. remove the
through-bolt attaching the control arm to the cross-
member. See Fig. 9.
6. Make sure all thread bores. bolts. nuts and mating sur-
faces are clean .
7. Install the bushing-end of the control arm to the cross-
member. using washers on both sides of the bolt and a
new self-locking nut. Do not tighten the nut at this lime.
8. Install the control arm ball joint to the steering arm us-
ing a new self-locking nut.
Tightening Torques
• Control arm ball joint to
steering arm 93 Nm (68 ft-Ib)
9. Install the steering arm to the strut. making sure the
mating notch is aligned. See Fig. 4. given earlier. Use
locking compound (Loctite 270
R ,
or equivalent) on the
bolts and tighten.
CON TROL ARMS
Fig . 9. Conuol ann mrouqn-ooit
(arrow).
Tightening Torques
• Strut housing to steering arm
(use Loctite 270''-' or equivalent . .. . 110 Nm (8 1 tt-lb)
10. Install the wheel and lower the car. Load the car to the
normal loaded position as described earlier under Ride
Height. With the car on the ground and loaded. tighten
the control arm bushing through-bolt.
Tightening Torques
• Control arm to crossmember
(car in normal loaded position) 78 Nm (57 ft-Ib)
• Road wheel to hub 100
±
10 Nm (74
±
7 n-ib)
To replace control arm bushings
(steel control arms only)
Control arm bushings should always be replaced in pairs.
NOTE -
Jivo types of control arms are Installed on the
E3~
cars:
aluminum construction and steef construction. On cars
witt: aluminum control arms . the entire control arm
must be replaced if the bushing is worn. On cars wltll
steel control arms. the bushings are available as reo
placemen t parts.