installing AC BMW 528i 2000 E39 Workshop Manual

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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-

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I Rear Suspension
4 Press out axle shaft using BMW special tools 33 2 117. 33 2
116and332111.
4 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 shafl 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. Tight-
en collar nut firmly, but do not fully tighten it at this time.
WARNING-
For safety reasons, the axle 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 tiqhtened
suificiently may darnaqe the bearina.

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330-42
/Rear Suspension
- Install ABS sensor and road wheel.
- Lower car to ground. With an assistant applying brakes, use
new axle collar nut to tighten to final torque. Stake nut.
- Remainder of installation is reverse of removal
Tightening torques ABS pulse sensor to wheel bearing carrier
8 Nm (6 ft-lb)
Brake disc to hub
16 Nm
Rear
brake pad carrier (caliper) to wheel
65 Nm (48 ft-lb)
bearing carrier
Rear axle shaft to hub
(M27) 300 Nrn (221 ft-lb)
Road wheel to hub 120F10 Nm
(89 ?7 ft-lb)
The rearstabilizer bar is mounted to the rear
subframe and at-
tached via stabilizer bar
linlts to the lower swing arms.
Stabilizer bar, removing and installing
- Raise rear end of car.
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.
- Paint mark stabilizer bar on left side for ease of assembly.
Remove stabilizer link fastener
(A) on each side. Press out
stabilizer link ball joints.
Remove stabilizer support bracket fastener
(B) on each
side.
Remove stabilizer bar.
Installation is reverse of removal. Use previously made paint
mark for reassembly.
Tightening torques Stabilizer link to stabilizer bar
42 Nm (32 ft-lb)
Stabilizer bar bracket to sublrame (ME) 22 Nm (1 6 fi-lb)

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Rear Suspension
Stabilizer bar link, removing and installing
Remove stabilizer link mounting nut (arrow) at stabilizer bar.
4 Remove
stabilizer link mounting nut (arrow) at swing arm
- Press out stabilizer link ball joints
- Installation is reverse of removal
Tightening torques Stabilizer
link to swing arm 65 Nrn (48 ft-lb)
Stabilizer link to stabilizer bar 42
Nm (32 ft-lb)

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---
Rear Suspension
ELECTRONIC HEIGHT CONTROL
(EHC) COMPONENT REPLACEMENT
Sport Premium rear suspension is an option on Sport Wagon
models and standard on
1999 and later V-8 Sport Wagons.
This suspension incorporates electronic height control
(EHC)
using air springs.
With vehicle lifted off the ground,
if the rear air springs can be
compressed by hand, either the spring is defective or the sys-
tem is depressurized.
Locate
EHC faults using BMW scan tools DIS or MoDiC. EHC
description and some troubleshooting is covered in 300 Sus-
pension, Steering and Brakes-General.
Air spring replacement is covered earlier in this chapter. See
Air spring, removing and installing.
CAUTION-
Maintain high levels of cleanliness around air line connec-
tions when disassembling and assembling air suspension
components. Even
small dirt particles can cause leakage in
the pressurized system.
Electronic height control
(EHC) components
1. Air spring
2. 1 liter air reservoir
3. EHC control module
4. Air supply distributor
5. Airsupply pump
(under spare tire)
6. Air spring mounting bolt
(at wheel bearing carrier)
7. Rear ride height sensors
(Hall effect)
8. Air supply pump relay

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-- I
I: ... . -. Rear Suspension! -- .- -
Air compressor pump relay, removing and
installing
- Working in cargo compartment, remove spare wheel.
4 Remove air supply pump fasteners (arrows). Turn pump
over.
- Turn relay plug 45" and remove relay.
EHC control module, removing and
installing
The EHC control module is mounted on the right side of the
spare tire
well in the cargo compartment.
- Remove spare tire.
4 Remove electrical components cover (A).
- Release control module wiring harness plug loclting clip (B)
and remove module.
- Installation is reverse of removal.
- After assembly, reset ride height using BMW diagnostic scan
tool DIS.
Air supply unit, removing and installing
CAUTION-
Maintain high levels of cleanliness around air line connec-
tions when disassembling and assembling air suspension
components. Even small dirt particles can cause
leakage in
the pressurized system.
When the airsupply unit is removed for any reason, reset ride
height using BMW scan tools DIS or
MoDiC.
- Remove spare tire.
i~B,!n,,ayPubi.l,c~u.c~"~-A~~ R

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Rear Suspension
4 Remove air line fittings (A) from bottom of air distribution con-
nectors.
Cut off wire ties.
WARNING-
Vehicle will lower when the air pipes are opened.
4 Rotate air line distribution connector (A) 45" in direction of
arrow to remove.
Rotate electrical connector
(B) 45" in direction of arrow to
remove.
Compress wiring connector locking clips
(arrows) and dis-
connect wiring harness.
< Remove air supply unit mounting fasteners (arrows) and re-
move unit.
- Installation is reverse of removal.
When installing air lines always match line colors.
a After assembly, reset ride height using BMW diagnostic
scan tool DIS.

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330-47
Rear suspension/
Ride height sensor, removing and installing
Hall effect sensors for vehicle height detection are mounted
on the
left and right sides of the rear suspension. A coupling
rod mounted between the rear suspension arm and the sen-
sor arm is used to send a varying voltage signal to the
EHC
control module.
Raise car and support safely.
WARNING-
Male 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
sus~ension Darts.
Working underneath rear of car, remove trim panel (arrow)
just ahead of suspension subframe.
Disconnect electrical harness connector from sensor.
4 Remove control rod mounting nut (arrow).Turn control rod to
access sensor mounting fastener.
- Remove sensor mounting fasteners.
- Remove ride height sensor.
- Installation is reverse of removal.
Make sure sensor lever points outward. After assembly, re-
set ride height using BMW diagnostic scan tool DIS.
Tightening torques
Ride
height sensor to bracket 5 Nrn (44 lb-in)
Lever to height sensor
9 Nrn (80 ib-in)