How to change rear suspension strut on BMW E39 – replacement guide
BMW 5 Saloon (E39) 520i, BMW 5 Saloon (E39) 525tds, BMW 5 Saloon (E39) 523i, BMW 5 Saloon (E39) 528i, BMW 5 Saloon (E39) 540i, BMW 5 Saloon (E39) 535i, BMW 5 Saloon (E39) 525 td, BMW 5 Saloon (E39) 530 d, BMW 5 Saloon (E39) 535i, BMW 5 Saloon (E39) 520 d, BMW 5 Saloon (E39) 525 d, BMW 5 Saloon (E39) 520 i, BMW 5 Saloon (E39) 530 d, BMW 5 Saloon (E39) 525 i, BMW 5 Saloon (E39) 530 i … View more
The steps may slightly vary depending on the car design.
How to change rear shock strut on BMW 520i (E39) [TUTORIAL AUTODOC]


- Both shock struts of the rear suspension should be replaced simultaneously.
- The replacement procedure is identical for the left and right shock struts of the rear suspension.
- All work should be done with the engine stopped.
- Step 1

Remove the lower part of the rear seat.
- Step 2

Unscrew the fasteners of the rear seat backrest. Use a drive socket #10. Use a ratchet wrench.
- Step 3

Remove the rear seat headrests.
- Step 4

Remove the rear seat backrest.
- Step 5

Remove the side plastic cover. Use a plastic trim tool.
- Step 6

Unscrew the rear seat headrest bracket. Use a Phillips screwdriver.
- Step 7

Remove the clips from the parcel shelf.
- Step 8

Detach the parcel shelf.
- Step 9

Unscrew the fasteners of the speakers. Use a Phillips screwdriver.
- Step 10

Detach the speaker connector.
- Step 11

Remove the speakers.
- Step 12

Bend the interior sound insulation upwards.
- Step 13

Remove the shock strut mount cap.
- Step 14

Loosen the upper fastener of the shock strut mount. Use a drive socket #13. Use a ratchet wrench.
- Step 15

Secure the wheels with chocks.
- Step 16

Loosen the wheel mounting bolts. Use wheel impact socket #17.
- Step 17

Raise the rear of the car and secure on supports.
- Step 18

Unscrew the wheel bolts.
Replacement: suspension strut – BMW E39. Tip from AUTODOC:To avoid injury, hold up the wheel when unscrewing the bolts.
- Step 19

Remove the wheel.
- Step 20

Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
- Step 21

Unscrew the fastener connecting the stabilizer link to the stabilizer bar. Use a combination spanner #16. Use a drive socket #16. Use a ratchet wrench.
- Step 22

Remove the stabilizer rod.
- Step 23

Disconnect the brake pads wear sensor. Use a crowbar.
Please note!Some cars are not equipped with the brake pad wear sensor.
- Step 24

Support the arm. Use a hydraulic transmission jack.
- Step 25

Spread the brake pads. Use a crowbar.
- Step 26

Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
- Step 27

Unscrew the caliper bracket fastening. Use a drive socket #16. Use a tap wrench.
- Step 28

Remove the brake caliper together with its bracket.
AUTODOC recommends:Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system.Make sure that the brake caliper is not hanging on the brake hose.Don't press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur.
- Step 29

Remove the support from under the arm.
AUTODOC recommends:Replacement: suspension strut – BMW E39. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
- Step 30

Clean the shock strut fasteners. Use a wire brush. Use WD-40 spray.
- Step 31

Unscrew the lower fastener of the shock absorber strut. Use a drive socket #21. Use a tap wrench.
- Step 32

Clean all joints of the arm. Use a wire brush. Use WD-40 spray.
- Step 33

Disconnect the ABS sensor wiring.
- Step 34

Clean all joints of the arm. Use a wire brush. Use WD-40 spray.
- Step 35

Unscrew the fastener connecting the control arm to the rear knuckle. Use a combination spanner #22. Use a drive socket #10. Use a ratchet wrench.
- Step 36

Unscrew the arm fastening to the beam. Use a combination spanner #16.
- Step 37

Detach the bottom part of the shock strut. Use a crowbar.
- Step 38

Remove the fastening bolt.
- Step 39

Remove the arm.
- Step 40

Unscrew the top fastening of the shock strut mount.
- Step 41

Remove the suspension strut.
- Step 42

Set the shock absorber strut on the spring compressor tool.
Replacement: suspension strut – BMW E39. AUTODOC experts recommend:Note that when using a spring compressor, spring coils need to be securely gripped, compressing the spring on the opposite sides.Ensure the correct position of the spring in the retainer.Make sure that the spring coils tightly entered the lock handles.
- Step 43

Compress the spring.
- Step 44

Treat the shock strut rod. Use a wire brush. Use WD-40 spray.
- Step 45

Remove the strut piston rod nut. Use a shock absorber socket DD№6. Use a drive socket #16. Use a ratchet wrench.
- Step 46

Remove the top strut mount.
- Step 47

Release the coil spring.
- Step 48

Remove the spring.
- Step 49

Remove the shock absorber dust cap and the bump stop.
- Step 50

Remove the old shock absorber from the hydraulic coil spring compressor.
Replacement: suspension strut – BMW E39. AUTODOC recommends:Τhoroughly examine the shock absorber mount, dust boot, bump stop. Replace them if necessary.Before installing a new shock absorber you should pump it manually 3-5 times.
- Step 51

Install the new shock absorber on the hydraulic coil spring compressor.
- Step 52

Install the spring on the shock absorber.
- Step 53

Install the dust sleeve and the bump stop on the new shock absorber.
- Step 54

Compress the spring.
- Step 55

Install the upper strut mount and the strut mount bearing.
- Step 56

Tighten the shock strut piston rod nut. Use a shock absorber socket DD№6. Use a drive socket #16. Use a torque wrench. Tighten it to 27 Nm torque.
Replacement: suspension strut – BMW E39. Professionals recommend:Check to make sure the spring is positioned correctly. Avoid its misalignment.
- Step 57

Decompress the spring.
- Step 58

Remove the assembled shock strut.
- Step 59

Install the shock strut into the wheel arch.
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