Honda Bmw 5 Service Manual
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330-5 Rear Suspension REAR STRUTS AND SPRINGS (SEDAN MODELS) Rear strut assembly, removing and installing Replace struts and coil springs in pairs only. - Raise car and remove rear wheels. WARNING - Male 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 rear parcel shelf: Remove rear seat headrests by pulling straight up. Remove both rear roof pillar (C-pillar) trim panels. Unbolt rear seat belt anchors. See 720 Seat Belts. Models with fixed rear seat: Remove rear seat backrest. See 520 Seats. * Models with fold-down rear seat: Remove rear seat back- rest side sections. See 520 Seats. Fold down backrest. * Working inside trunk, remove roller blind mounting nuts and bolts, if applicable. Also disconnect roller blind har- ness connector at right edge of rear seat backrest. Gently pry rear speaker cover grilles and rear window defog- ger grilles (A) out of parcel shelf. Carefully remove seat belt and headrest mount finisher strips (B). Remove middle seat headrest anchor bolts (C). Remove headrest anchor. Remove expansion rivets (arrows) and lift out parcel shelf. - Remove rear speakers. - Remove rear wheels. Remove wheel arch trim - Support rear wheel bearing carrier. CAUTION- The strutassembly prevents the drive axle and wheel bearing carrier from dropping too far. Supporting the wheel bearing carrierbefore disconnecting the strut mounting fasteners pre- vents damage to the brake hose, parking brake cable and drive axle CV joints.
330-6 Rear Suspension 4 Remove rear strut top cover. Remove upper strut mounting nuts (arrows). Remove strut assembly lower mounting bolt (arrow). Disassemble strut and spring assembly as described below in Rear strut assembly, disassembling and reassem- bling. Installation of assembly to car is reverse of removal, noting the following: Make sure all threaded bolts, nuts and mating surfaces are clean. Install strut assembly top mount using new self-loclting nuts. Malte sure long lower strut bushing fits in hole in wheel bearing carrier. Tightening torques Strut to wheel bearing carrier 127 Nm (94 it-lb) Strut mount to body Gray fasteners 28 Nm (21 ft-lb) Yellow fasteners 24 Nm ( 18 it-lb) - Road wheel to hub 120ilO Nm (89i7ft-lb)
Rear ~us~ensionl Rear strut assembly, disassembling and assembling Replace struts and coil springs in pairs only Replacing the upper strut mount, spring or strut requires that the strut assembly first be removed from the car, as described earlier. Strut disassembly requires a spring compressor. WARNING- Do not attempt to disassemble the strut without a spring com- pressor designed specifically for the job. - Remove strut assembly from car as described in Rear strut assembly, removing bnd installing 4 Mount spring compressor (BMW special tools 31 3 340 and 31 3 350 or equivalent) in shop vice. Install correct-sized spring retainers (A). WARNING- Do not attempt to disassemble the struts without a spring compressor designed specifically for this job. * Prior to using the spring compressor checlc its opera- tion. Do not use a spring compressor that is damaged. Do not make any modifications to the spring compres- sor. Never use an impact wrench to compress or relieve tension when using a spring compressor. 1 - Place strut assembly coil spring in spring retainers. Com- press spring until force on upper strut mount is relieved. Remove strut top mount self-locking nut with BMW special tool 31 2 21 0 while counterholding strut shaft with a box end wrench. - Remove upper strut mount and related components. Sepa- rate strut from spring. NOTE- Store the removed shock absorber upright Do not allow it to lie horizontally or upside down for any length of time. If incor- rect storage has occurred, place the shoclc absorber upright with the rod fully extended for at least 24 hours. - Replace strut, rubber bumper, upper strut mount or spring, as needed. NOTE- Relieve tension on spring compressor slowly and carefully. Fit new spring in spring compressor so that one coil at each end is outside spring retainer.
330-8 Rear Suspension 4 Compress spring and install it and related components to shock absorber. Use new self-locking upper strut mounting nut. 1. Upper strut mount self-locking nut 2. Washer 3. Poor road surface adapter 4. Upper spring seat 5. Upper strut mount 6. Upper rubber bumper seat 7. Rubber bumper 8. Coil spring 9. Dust boot 10. Lower spring seat I I. Strut WARNING- Male sure the upperself-locking nut is fully tightened before releasing the spring compressor. Tightening torque Upper strut mount to strut shaft 27 Nm (20 ft-lb) (M14, replace self-locking nut) 4 Before releasing spring tension, position upper strut mount so that one threaded stud is on a plane with flat end of strut bushing at other end of strut. - Release spring compressorslowly, positioning spring ends in shoulders of spring seats. - Reinstall strut assembly in vehicle, as described above in Rear strut assembly, removing and installing.
-- C. -- -- - -- Rear ~us~ensionl Depending on year and model applications, the Sport Wagon rear suspension may be equipped with: Conventional shock absorbers and coil springs Electronic height control (EHC) system which incorporates air springs NOTE- . Suspension and EHC troubleshooting is covered in 300 Suspension, Steering and Brakes-General. EHC system repairs, other than air spring replacement, are covered in Electronic height control (EHC) compo- nent replacement. Replace shock absorbers and springs in pairs only. Rear shock absorber, removing and installing - Raise car and remove rear wheels, WARNING- Male sure that 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. CAUTION- If working on a vehicle with compressedairshock absorbers, disable air supply pump by disconnecting electrical plug be- fore performing any repairs. Pump is located beneath a cover under the spare tire in the floor of the cargo compartment. - Support swing arm from below CAUTIOG The shock absorber prevents the drive axle and wlieel bear- ing carrier from dropping too far. Supporting the wheel bear- ing carrier before disconnecting the shock absorber mounting fasteners prevents damage to the brake hose, parking brake cable and drive axle CVjoints. - Working in cargo compartment, remove carpet. Remove tri- angular upper shock mount covers located beside spare tire well. - If applicable: Detach air supply line from shock absorber. Plug ports and lines to keep out dirt.
330-1 0 /Rear Suspension - Remove rubber protective cap from shock absorber upper mount. - Remove shock absorber upper mounting nuts. - Remove shock absorber lower mounting bolt. Lower shock absorber out of wheel housing. < Transfer shock top mounting plate, dust cover (if applicable) and related components to new shoclc absorber. 1. Self-locking nut 2. Washer 3. Upper siioclc absorber mount 4. Rubber bumper seat 5. Rubber bumper 6. Dust boot 7. Shock absorber 8. Long lower bushing Tightening torques Shock absorber to upper mount 27 Nm (20 it-lb) (M14, replace self-locking nut) - Installation on car is reverse of removal, noting the following: Make sure all threaded bolts, nuts and mating surfaces are clean. Install shock absorber upper mount to subframe using new self-locking nuts. . Make sure long lower shock absorber bushing fits in hole in suspension swing arm. Tighten lower shoclc absorber bolt to its final torque once car is on ground. Tightening torques Quick coupling screw to air 2 Nm (18 in-lb) shock absorber Road wheel to hub 120 &I0 Nm (89 -f7 ft-lb) Shock absorber to swing arm 127 Nm (94 ft-lb) Strut mount to body Gray fasteners Yellow fasteners 24 Nm ( 18 it-lb)
330-1 1 Rear Suspension Coil spring, removing and installing 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 brake caliper and brake disc. Hang brake caliper aside with stiff wire. Do not disconnect bralte fluid hose. See 340 Brakes. - Remove exhaust system. See 180 Exhaust System. - Disconnect driveshafl from final drive. See 260 Driveshaft. - Detach parking bralte cables from mounting bracltets on sub- frame. < Support final drive unit from below using transmission jack and BMW special tool 33 4 390 or equivalent. Remove rear suspension subframe mounting bolts (arrows). Lower rear subframe until coil springs can be removed. When reinstalling springs, replace upper and lower spring pads if necessary. Slowly lift suspension back into position, making sure coil springs are correctly seated in upper and lower spring seats. Install and tighten subframe mounting bolts. Note that on each bolt, rubber-coated detent plate (arrow) must be in- stalled at rear in driving direction - Remainder of installation is reverse of removal Tightening torques Road wheel to hub 12OilO Nm (89i-7 ft-lb) Subframe to body 163 Nm (120 ft-lb)
Rear Suspension Air spring, removing and installing CAUTION- If vehicle is driven with airspring depressurized, the airspring will be permanently damaged and must be replaced. An air spring is made from a flexible rubber material which forms an airtight cavity. It is pressurized by an air supply pump activated by an electronic control unit to provide a vari- . . able spring rate depending on vehicle load CAUTIOIG Disable air supply pump by disconnecting electrical plug before performing any repairs. Pump is located beneath a cover under the spare tire in the floor of the cargo compart- ment. When removing and installing air connections, extreme cleanliness must be followed. Small dirt particles can cause leakage in the system. Remove luggage compartment floor mat. - Working above air spring, loosen quick coupling screw con- nection to allow air pressure to escape. - Once pressure has been reduced, retighten screw. Tightening torque Quick coupling screw to air pump 2 Nm (18 in-lb) - Remove quick coupler. Plug openings to keep dirt out, - Remove air spring mounting clips. - Raise car and remove rear wheels. 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 jaclc stands under suspension parts. - Working underneath rear suspension, lift wheel bearing car- rier to relieve rear spring tension. Then unbolt air spring mounting bolt from seat on wheel bearing carrier. Remove air spring. NOTE- Left and right air springs are different. The left air spring is marked with a red identification marl. The right air spring is marked with a blue identification mark.
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)
[Rear Suspension Swing arm, removing and installing (sedan models) CAUTION- If working on a vehicle with compressed airshock absorbers, disable air supply pump by disconnecting electrical plug be- fore performing any repairs. - 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 sus~ension Darts. - Disconnect control rod for ride height sensor if applicable. Remove ABS pulse sensor (arrow) from wheel bearing car- rier. Remove stabilizer bar link mounting nut (arrow). Press link out of swing arm. 4 Mark location (arrow) of rear camber adjustment washer and bolt. NOTE- Rear camber is adjusted at the inner swing arm eccentric rear mounting bolt - Support wheel bearing carrier from below.