wheel front BMW 528i 1998 E39 Repair Manual

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Isteering and Wheel Alignment
6-cylinder sedan (5251,5281,530i)
Parameter
Front axle
. .. I I I
Outside wheel (approx. ") / 33.5 133 133
M Sport
suspension
Standard
suspension
With
i 20" wheel loclc
Front wheel displacement
Inside wheel
(approx. ")
Sport suspension
O0 5' i 10'
- 36' i 30'
-ID56'-t30'
N/A
6" 41' i 30'
Total toe
Camber (difference between lefffright maximum
40')
Track (differential angle with 20" lock on inside wheel)
Caster (difference between lefffright maximum
30')
With i 10" wheel locic
6" 42' i 30'
0°i15'
42
. .. I I I
Rear axle
6-cylinder Sport Wagon (5251,5281)
0"5'il0'
-13'+30'
-1" 56' -t 30'
N/A
6" 28' i 30'
OD5'i10'
- 36' i 30'
-1" 56' i 30'
N/A
6" 41' i 30'
6" 55'
i 30'
0'2 15'
41.5
0" 22'
-t 4'
0" i 12' Geometrical axis deviation
6' 55' i 30'
0"
i 15'
41.5
0°22'i4' Total toe 0" 22' i 4'
Camber (difference between leitlright maximum 15') 1-20 04' ?- 5' 1-2" 04' i 5'
O"i12'
Sport suspension
Parameter
- I I
. .. I I
Outside wheal (approx. ") 133.5 133
-2' 04' -t 5'
OO-t 12'
Standard suspension
Wlth i 10" wheel lock
I I
Front axle
With
i 20" wheel lock 16" 42' i 30' 16" 55'i30'
6" 28' i- 30'
0"
i 15' Front wheel displacement
. .. I I
Rear axle
D"5'iIO'
- 36' i 30'
-I056'i30'
NIA
Total toe
Camber (difference between
IeWright maximum 40')
Track (differential angle with 20" lock on inside wheel)
Caster (difference between
lefffrioht maximum 30') 6" 41'
+ 30'
Inside wheel (approx. ") 142 141.5
OOi 15'
0"5'i10'
- 13'i30'
-1" 56' i 30'
N/A
0" 16'i 10' Total toe
0" i 12' Geometrical axis deviation
Camber (difference
between iefffright maximum
15') /-lo 50' i 20' 1-1" 50'i20'
0" 16'f 10'
0" il2'

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Steering and Wheel Alignment
V-8 Sedan (540i)
I Front axle I
Parameter Standard
suspension
Total toe
.
Track (differential angle with 20" ioclc on inside wheel)
Caster (difference between
leftiright maximum 30')
With i 10° wheel loclc
With i 20" wheel lock
Front
wheel displacement
Inside
wheel (approx. ")
Outside wheel (approx. ")
M Sport suspension
Camber (difference between
leitiright maximum 40') 1- 13'i30' 1- 30' i 30' 1- 37' i 30'
0" 10'i 10' 0" 14'ilO'
Sport suspension
0" 14'i 10'
Rear axie
-1°35'i30'
N/A
6" 18'+30'
6' 36' i 30'
0"
i 15'
42
32.6
Total toe
Camber (difference between
IeWright maximum 15')
Geometrical axis deviation ~~
V-8 Sport Wagon (540i)
O"10'iW
-lo 49' i 5'
O"i12'
0" 22' i 4'
-2' 04' i 5'
0"
i 12'
Parameter
-1 " 43 'i 30'
NIA
6" 27'
i 30'
6"49'i30'
Pilo'
41.5
32
0°22'i4'
-2" 04' i 5'
O"i 12'
-ID 44' i 30'
N/A
6" 34' i 30'
6' 50' 130'
0" i 15'
42
31.8
Standard suspension Sport suspension
Front axie
0" 14'210'
-37i30'
-la44'+30'
N/A
6" 34' i 30'
6' 50' i 30'
O0i15'
42
31.8
0"
16'2 10'
-I050'i20'
0" i 12'
Total toe
Camber (difference between
ieftiright maximum 40')
Track (differential angle
with 20" loclc on inside wheel)
Caster (difference between
leftiright maximum 30')
With i 10" wheel lock
With i 20° wheel lock
Front wheel displacement
Inside wheel (approx.
")
Outside wheel (approx. ")
0" 14'i 10'
-13'i30'
-1" 35' i 30'
N/A
6' lS'i30'
6' 36' i 30'
On+ 15'
42 32.65
Rear axle
Total toe
Camber (difference between
lettiright maximum 15')
Geometrical axis deviation
0" 16'i 10'
-I050'i20'
0" i 12'

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330 Rear Suspension
General . . . . . . . . . . . . . . . . . . . . . . . . . . . ,330-2
Special tools . . . . . . . . . . . . . . . . . . . . . . . . ,330-2
Rear suspension variations . . . . . . . . . . . . ,330-4
Rear Struts and Springs
(sedan models)
. . . . . . . . . . . . . . . . . . . . ,330-5
Rear strut assembly, removing
and installing
. . . . . . . . . . . . . . . . . . . . . . . ,330-5
Rear strut assembly, disassembling
and assembling
. . . . . . . . . . . . . . . . . . . . . ,330-7
Rear Shock Absorbers and
Springs (Sport Wagon models)
. . . . . ,330-9
Rear shock absorber, removing
and installing
. . . . . . . . . . . . . . . . . . . . . . . ,330-9
Coil spring, removing and installing . . . . . ,330-1 1
Air spring, removing and installing
. . . . . . ,330-12
Rear Suspension Arms,
Subframe and Bushings . . . . . . . . . . ,330-13
Rear suspension arm components . . . . . . ,330-1 3
Swing arm, removing and installing (sedan models)
. . . . . . . . . . . . . . . . . . . . . ,330-1 4
Swing arm, removing and installing (Sport Wagon models)
. . . . . . . . . . . . . . . ,330-16
Swing arm ball joint, replacing . . . . . . . . . ,330-1 9
Upper rear control arm, removing
and installing (sedan models)
. . . . . . . . . . .330-22
Upper rear control arm, removing
and installing (Sport Wagon models)
. . . . .330-23
Upper front control arm (traction strut),
removing and installing
. . . . . . . . . . . . . . . ,330-25
Rear axle assembly, removing and
installing (sedan models)
. . . . . . . . . . . . . ,330-26
Rear axle assembly, removing and
installing (Sport Wagon models)
. . . . . . . ,330-28
Rear subframe mounting bushings,
removing and installing
. . . . . . . . . . . . . . . .330-31
Rear Wheel Bearings . . . . . . . . . . .
Rear wheel bearing carrier, removing
and installing (sedan models)
. . . . . . .
Rear wheel bearing carrier, removing
and installing (Sport Wagon models)
. .
Rear wheel bearing, replacing . . . . . . .
Rear Stabilizer Bar
Stabilizer bar, removing and installing .
Stabilizer bar link, removing
and installing
. . . . . . . . . . . . . . . . . . . .
Electronic Height Control (EHC)
Component Replacement
. . . . . . .
Electronic height control (EHC)
components
.....................
Air compressor pump relay, removing
and installing
. . . . . . . . . . . . . . . . . . . .
EHC control module, removing
and installing
. . . . . . . . . . . . . . . . . . . .
Air supply unit, removing and installing
Ride height sensor, removing
and installing
. . . . . . . . . . . . . . . . . . . .

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330-1 3
Rear Suspension
1 1 4 Check roll fold of air spring (arrows). Reinstall only if roll fold
is undamaged and formed correctly.
- To install air spring:
Check sealing O-rings at air spring inlet. Replace
if dam-
aged. Do not grease O-rings. Reinstall protective plug.
* Install spring above suspension subframe. Make sure ec-
centric lug at bottom of air spring fits in recess of
subframe
spring seat.
Reattach top spring mounting clips.
- Reattach air line connections.
- Remainder of installation is reverse of removal.
Tightening torques
Air line connection
2 Nm (1 8 in-lb)
Air spring
to wheel bearing carrier 20 Nm (1 5 ft-lb)
Road
wheel to hub 120 510 Nm (89-F-7 ft-lb)
REAR SUSPENSION ARMS,
SUBFRAME AND BUSHINGS
A damaged suspension arm orworn bushings will change the
rear wheel alignment and may adversely affect handling and
stability.
WARNING-
Do not attempt to straighten a damaged suspension arm.
Bending or heating may
weaken the original part. Always re-
olace a damaoed susoension arm.
Rear suspension arm
components
1. Eccentric washer
(for rear toe adjustment)
2. Upper front control arm
(guide link or traction strut)
3. Outer swing arm bushing and
integral link
4. Swing arm (lower control arm)
5. Upper rear control arm
(wishbone)
6. Wheel bearing carrier
7. Circlip
8. Swing arm ball joint
9. Eccentric washer
(rear camber adjustment)

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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)
CAUTIOG
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.

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330-25
Rear Suspension
Remove rear control arm:
Remove inner control arm bolt
(A). Push shock absorber
out of the way to slide bolt out.
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.
Maite sure
ail threaded bolts, nuts and mating surfaces are
clean.
Inner control arm mounting bolt must thread to front
(bolt . head at rear).
Make sure long lower shock absorber bushing fits in hole
in suspension swing arm.
* Tighten fasteners to final torque only after 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 shocit absorber
2 Nm (18 in-lb)
Road wheel to hub
Shoclc absorber to lower control arm 127 Nm (94 it-lb)
Upper front control arm (traction strut),
removing and installing
- Raise rear end of car and remove wheel.
WARNING-
Maice sure the car is firmly supported on jack stands de-
signed for the purpose. Place
jack stands underneath struc-
tural chassis points. Do not place jack stands under
< Mark location of inner control arm eccentric washer (rear toe

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330-26
/ Rear Suspension
Remove inner control arm eccentric nut and bolt (A)
Remove control arm ball joint nut (6). Press ball joint out
of wheel bearing carrier.
Lifl out control arm.
Installation is reverse of removal, noting the following:
Use previously made
marks to install eccentric bolt and
nut.
Always use new self-locking nuts.
Tighten fasteners to final torque only after vehicle has
been lowered and suspension has settled.
0 Have car professionally aligned when job is complete.
Tightening
torques
Road wheel to hub 120klONm
(89 i7 ft-lb)
Upper front control arm (traction strut) to 60
Nm (44
ft-lb)
subframe (rear toe adjusting bolt)
Upper front control arm (traction strut) to wheel
65 Nm (48 ft-lb)
carrier
Rear axle assembly, removing and
installing (sedan models)
In case of damage to the subframe, or if a pressed-in bushing
is worn, remove
subframe by removing complete axle assem-
bly.
- Raise car and remove rear wheels.
WARNING-
Make sure the car is firmly supported on jack stands de-
signed for the purpose. Place jack stands underneath struc-
tural chassis points. Do not place
jack stands under
suspension parts.
- Remove exhaust system. See 180 Exhaust System
- Detach driveshaft from differential. See 260 Driveshaft.
- Remove brake caliper and brake disc. Hang brake caliper
aside with stiff wire. Do not disconnect brake fluid hose. See
340 Brakes.
- Remove lefl and right ABS sensors from wheel bearing car-
riers.
- Disconnect parking brake cable from brake shoe expander.
See 340 Brakes.
- Remove heat shield from above driveshaft.

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I Rear Suspension
4 When installing subframe bushing, be sure alignment arrows
point front and rear.
Coat new mount with
CircolightB anti-friction agent.
< Draw new bushing into subframe using BMW special tools 33
4152,334153,334154,334155,334157.
- Remainder of installation is reverse of removal, noting the fol-
lowing.
* Tighten suspension arm and shock absorber fasteners to
final torque only after vehicle has been lowered and
sus-
oension has settled.
Rear wheel bearing carrier, removing and
installing (sedan models)
- 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 jaclc stands under
suspension parts.
4 With an assistant applying brakes, break free and remove
staked collar nut (arrow).
- Remove brake caliper and brake disc. Hang brake caliper
aside with stiff wire. Do not disconnect brake fluid hose. See
340 Brakes.
- Disconnect parking brake cable from brake shoe expander.
See 340 Brakes.

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(Rear Suspension
< Remove upper front control arm (traction strut) ball joint
mounting nut
(arrow). Press control arm ball joint out of
wheel bearing carrier.
- Repeat above process on upper rear control arm.
- Remove wheel bearing carrier assembly.
4 When reinstalling, pull axle shaft through wheel bearing car-
rier using
BMW special tools 33 2 115, 33 2 116 and 33 2
118.
- Lightly oil bearing surface of axle collar nut and install. T~ght-
en collar nut firmly, but do not fully tighten it at this time.
WARNING-
For safety reasons, the ale collar nut should only be tight-
ened to its final torque with the wheel installed and the car
lowered to
the ground. However, loading the bearing without
the nut tightened sufficiently may damage tlie bearing.

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330-35
Rear Suspension
- Remainder of installation is reverse of removal, noting the fol-
lowing.
Always use new self-loclting nuts.
Make sure all threaded bolts, nuts and mating suriaces are
clean.
Make sure long lower strut bushing fits in hole in wheel
bearing carrier.
Tighten fasteners to final torque only after vehicle has
been lowered and suspension has settled.
Stake axle collar nut after tightening.
Tightening torques
ABS pulse sensor to wheel bearing carrier
8 Nm (6 ft-lb)
Brake rotor to hub 16 Nm (12 ft-lb)
Rear brake pad carrier (caliper) to wheel 65
Nm (48
ft-lb)
bearing carrier
Rear axle shaft to hub
(M27) 300 Nm (221 ft-lb)
Rear strut to wheel bearing carrier 127
Nrn (94 ft-lb)
Road wheel to hub
120+10 Nm
(89
i7 ft-lb)
Swing arm to wheel bearing carrier 256
Nrn (189 ft-lb)
Upper front control arm (traction strut) to 65 Nrn
(48
ft-lb)
wheel carrier
Upper rear control arm to wheel carrier 142
Nrn (105
ft-lb)
Rear wheel bearing carrier, removing and
installing (Sport Wagon models)
- Raise rear end of car and remove wheel.
WARNING-
Make sure the car is firmly supported on jack stands de-
signed for the purpose. Place jack stands underneath struc-
tural chassis points. Do not place jack stands under
suspension parts.
Models
with air springs: Disable air supply pump by discon-
necting electricalplug
beforepedormingany repairs. Pump is
located beneath a cover under the spare tire in the floor of the
cargo compartment.
-- 4 Models with air springs: Loosen compressed air pipes (ar-
rows) at air distribution assembly to release system pres-