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.
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-
Maintainhigh levels of cleanlinessaroundair line connections when disassemblingand assemblingair suspension components. Evensmall dirtparticlescan cause leakage in the pressurizedsystem.
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~"~-RA~~
Rear Suspension
4 Remove air line fittings (A) from bottom of air distribution connectors.
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 disconnect wiring harness.
<Remove air supply unit mounting fasteners (arrows) and remove unit.
-Installation is reverse of removal.
When installing air lines always match line colors.
aAfter assembly, reset ride height using BMW diagnostic scan tool DIS.
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 sensor 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 onjaclc stands designed for the purpose. Placejaclc stands underneathstructuralchassispoints. Do not placejaclc stands under sus~ensionDarts.
Working underneath rear of car, remove trim panel (arrow) just ahead of suspension subframe.
Disconnect electrical harness connector from sensor.
4 Removecontrol 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, reset 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) |
331-2
Final Drive
This repair group covers removal and repair informat~onfor the final drive (differential), axle shafts. CVjoints, CVjoint boots, and final drive seal replacement.
Internal repairs of the differential assembly are not covered in this manual.
Special tools
BMW recommends some special tools for the removalof the drive axles as well as the installation of rear differential input and output drive flange seals. Some common pullers and drifts can often be substituted for these tools.
4 Drive flange holder
(Tool No. BMW 2 30 020)
Drive flange puller
(ToolNo.BMW31 2101 131 2102131 2103131 2104)
Drive pinion set
(Tool No. BMW 33 1 340)
4 Clamp~ngtool set
(ToolNo.BMW332101 13321021332103)
Final Drive
4 Output shaft tool set
(ToolNo. BMW332111 1 3 3 2 1 1 4 / 3 3 2 1 1 5 / 3 3 2 1 1 6 1 33211713321181332119)
4
1Trailing arm tool set
(Tool N OBMW 33 3 331 I33 3 332 133 3 333 133 3 334)
33 4 161
..
33 4 181
33
33 4 192
33 4 191
4 Final drive mount set
(ToolNo. BMW334151 / 3 3 4 1 5 2 / 3 3 4 1 5 3 / 3 3 4 1 5 4 / 3341551334156133415713341581334159)
<Differential mount press set
(Tool No.BMW334161 1334162133416413341651 33 4 166)
Q Differential mount press set
(ToolNo. BMW334171 / 3 3 4 1 7 2 / 3 3 4 1 7 3 / 3 3 4 1 174)
4Differential mount press set
(Tool No. BMW334181 133418213341831334184)
Support tube set
(ToolNo.BMW334191133419213341931334194)
331-4
Final Drive
4 Final drive output shaft seal tool (Tool No. BMW 33 4 250)
4 Pulling set
(Tool No. BMW 33 4 401 / 33 4 402 / 33 4 403 133 4 404 / 33 4 405 / 33 4 406)
Aluminum suspension components
In order to reduce vehicle weight, aluminum suspension components are ~ s e din some models. A tesl w l h a magnet wi.1 eas'ly reveal lhe metal Lseo. I f working with a u m i n ~ mcomponents, be sure to read and follow the cautions below.
CAUTIOI\C
Due to the chemical and corrosion characteristicsof aluminum, do not bring into contact with battery acid.
Do not use wire brushes with brass or iron bristles.
Only use brushes with stainless steel bristles.
Do not expose to flying sparks from grinding/cutting operations.
Do not subject to steel welding splashes.
Do not expose to temperatures over 80°C (176"F), even for short periods. Temperatures in painting facilities are not a problem.
Final Drive
Final drive, removing and installing
-Raise rear of car.
WARNING-
Make sure that the car is firmly supportedonjack stands designed for the purpose. Place thejaclc stands beneathstructural chassis ~ointsDo. not i lace iaclc stands under
( suspensionbarfs.
Remove exhaust system. See 180 Exhaust System.
Disconnect drive shaft from final drive. See 260 Driveshaft.
Remove drive axle CV joint bolts (arrows) at left and right sides. Suspend drive axles from body using stiff wire.
4 Support final drive with BMW special tool 33 4 390.
*Remove front final drive mounting bolt. Remove rear final drive mounting bolts (2). Carefully lower final drive unit.
-To install, use BMW special tool 33 4 390 to lift final drive into place.
CAUTIOP&
The following sequence must be used when installingthe final drive to preventtorsion stress on the finaldrive duringin-
Install mounting bolts and finger tighten only.
Remove final drive support.
Tighten both rear mounting bolts.
Tighten front mounting bolt.
NOTE-
Use new self-locking nuts.
-Check differential oil level. See Differential oil level, checking.
-Remainder of installation is reverse of removal.
