Replacement: coil springs – Audi A4 B8. AUTODOC recommends:
Both coil springs of the front suspension should be replaced simultaneously.
The replacement procedure is identical for the left and right coil springs of the front suspension.
Please note: all work on the car – Audi A4 B8 – should be done with the engine switched off.
Carry out replacement in the following order:
Step 1
Open the bonnet.
Step 2
Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
Step 3
Remove the clips of the plastic cowl grille.
Step 4
Raise up and remove the cowl grille.
Step 5
Clean the fasteners of the shock strut upper mount. Use a wire brush. Use WD-40 spray.
Step 6
Loosen the upper fastener of the shock strut mount. Use a drive socket #16. Use a ratchet wrench.
Step 7
Secure the wheels with chocks.
Step 8
Loosen the wheel mounting bolts. Use wheel impact socket #17.
Step 9
Raise the front of the car and secure on supports.
Step 10
Unscrew the wheel bolts.
Replacement: coil springs – Audi A4 B8. Tip:
To avoid injury, hold up the wheel when unscrewing the bolts.
Step 11
Remove the wheel.
Step 12
Clean all joints of the arm. Use a wire brush. Use WD-40 spray.
Step 13
Unscrew the upper control arm fasteners (2 pieces). Use a combination spanner #16. Use a drive socket #16. Use a ratchet wrench.
Step 14
Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 15
Undo the fastening nut that attaches the stabilizer link to the shock absorber fork.
Use a combination spanner #16.
Step 16
Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 17
Unscrew the fasteners connecting the stabiliser link to the stabiliser bar. Use a combination spanner #16 (2 pieces).
Step 18
Remove the stabilizer rod.
Step 19
Clean the shock strut fasteners. Use a wire brush. Use WD-40 spray.
Step 20
Unscrew the fastening bolt that connects the shock strut with the shock absorber fork. Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 21
Remove the fastening bolt.
Step 22
Clean the wheel hub fastener. Use a wire brush. Use WD-40 spray.
Step 23
Unscrew the wheel hub axle nut. Use HEX No.H18. Use a tap wrench.
Step 24
Unscrew the fastening bolt that connects the shock absorber fork with the lower control arm.
Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 25
Disconnect the ABS sensor wiring. Use a crowbar.
Step 26
Clean the ABS sensor connector. Use a nylon cleaning brush. Use WD-40 spray.
Step 27
Detach the ABS sensor connector.
Step 28
Remove the fastening bolt. Use a pin punch. Use a hammer.
Step 29
Detach the upper control arm from the steering knuckle. Use a crowbar.
Step 30
Prop up the steering knuckle. Use a hydraulic transmission jack.
Step 31
Disconnect the brake hose. Use a crowbar.
Step 32
Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
Step 33
Unscrew the brake caliper fastening. Use a drive socket #13. Use a ratchet wrench.
Step 34
Spread the brake pads. Use a crowbar.
Step 35
Detach the brake caliper retaining spring. Use a crowbar. Use a flat screwdriver.
Step 36
Remove the brake caliper.
Replacement: coil springs – Audi A4 B8. AUTODOC experts recommend:
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. Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary.
Step 37
Clean the fastener connecting the tie rod end to the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 38
Unscrew the end fastening nut to the steering knuckle. Use a combination spanner #21.
Step 39
Disconnect the tie rod end from the steering knuckle.
Step 40
Remove the fastening bolt.
Step 41
Detach the fastener that connects the shock strut to the control arm.
Step 42
Unscrew the top fastening of the shock strut mount.
AUTODOC recommends:
Important! Hold the suspension strut while unscrewing the fastening bolts. Audi A4 B8
Step 43
Remove the suspension strut.
Step 44
Grip the suspension strut assembled with the control arms in a vice.
Step 45
Clean the shock strut fasteners. Use a nylon cleaning brush. Use WD-40 spray.
Step 46
Undo the fastener that connects the shock strut with the shock absorber fork.
Use a special drive socket to remove the shock absorber. Use a ratchet wrench.
Step 47
Detach the shock absorber fork from the shock strut.
Step 48
Set the shock absorber strut on the spring compressor tool.
Replacement: coil springs – Audi A4 B8. Professionals 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 49
Compress the spring.
Step 50
Treat the shock strut rod. Use a wire brush. Use WD-40 spray.
Step 51
Remove the strut piston rod nut. Use a drive socket #18. Use HEX No.H6. Use a ratchet wrench.
Step 52
Release the coil spring.
Step 53
Remove the top strut mount.
Step 54
Remove the spring.
Step 55
Remove the shock absorber dust cap and the bump stop.
AUTODOC recommends:
Replacement: coil springs – Audi A4 B8. Carefully inspect the mount, the boot, and the bump stop of the shock absorber. Replace if necessary.
Step 56
Install the boot and a bump stop onto the shock absorber.
Step 57
Install the spring on the shock absorber.
Step 58
Install the upper strut mount and the strut mount bearing.
Step 59
Compress the spring.
Step 60
Tighten the shock strut piston rod nut. Use a drive socket #18. Use HEX No.H6. Use a torque wrench. Tighten it to 50 Nm torque.
Replacement: coil springs – Audi A4 B8. Tip:
Check to make sure the spring is positioned correctly. Avoid its misalignment.
Step 61
Treat the shock strut rod. Use copper grease.
Step 62
Decompress the spring.
Step 63
Remove the assembled shock strut.
Step 64
Clean the mounting seats of the shock absorber fork. Use a wire brush. Use WD-40 spray.
Step 65
Attach the shock absorber fork to the shock strut.
Step 66
Treat the mounting seats of the shock strut. Use a wire brush. Use WD-40 spray.
Step 67
Release the vice and remove the suspension strut assembled with the control arms.
Step 68
Install the shock strut into the wheel arch.
Step 69
Screw the top fastening of the shock strut mount. Do not tighten it.
Replacement: coil springs – Audi A4 B8. Tip from AUTODOC experts:
To avoid injuries, hold the shock strut when screwing the fastening bolts in.
Step 70
Clean the mounting seats of the tie rod end. Use a wire brush. Use WD-40 spray.
Step 71
Connect the tie rod end to the steering knuckle.
Step 72
Clean the mounting seats and the thread of the suspension arm. Use a wire brush. Use WD-40 spray.
Step 73
Install the fastening bolt.
Step 74
Screw in the fasteners connecting the suspension strut fork to the lower control arm. Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 75
Remove the support from under the steering knuckle.
AUTODOC recommends:
Replacement: coil springs – Audi A4 B8. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 76
Attach the upper control arm to the steering knuckle.
Step 77
Install the fastening bolt.
Step 78
Screw in the fasteners (2 pieces) of the upper control arm. Use a combination spanner #16. Use a drive socket #16. Use a ratchet wrench.
Step 79
Screw on the fastening nut that connects the tie rod end to the steering knuckle. Use a combination spanner #21.
Step 80
Attach the brake hose.
Step 81
Connect the ABS sensor wiring.
Step 82
Attach the ABS sensor connector.
Step 83
Install the brake caliper and fix it. Use a drive socket #13. Use a torque wrench. Tighten it to 30 Nm torque.
Step 84
Install the brake caliper retaining spring.
Step 85
Install the fastening bolt.
Step 86
Screw in the fasteners connecting the suspension strut to the suspension strut fork. Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 87
Clean the mounting seats of the stabiliser link. Use a wire brush. Use WD-40 spray.
Step 88
Ιnstall the transverse stabilizer link.
Step 89
Tighten the stabiliser link fastener. Use a combination spanner #16 (2 pieces).
Step 90
Support the arm. Use a hydraulic transmission jack.
Step 91
Tighten the fastener connecting the stabilizer link with the shock absorber fork.
Use a combination spanner #16. Use a drive socket #16. Use a torque wrench. Tighten it to 40 Nm torque.+90°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 92
Tighten the fastener connecting the stabilizer link to the stabilizer bar. Use a drive socket #16. Use a torque wrench. Tighten it to 40 Nm torque.+90°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 93
Tighten the fastening bolt that connects the shock absorber fork to the lower control arm.
Use a combination spanner #18. Use a drive socket #18. Use a torque wrench. Tighten it to 90 Nm torque.+90°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 94
Tighten the fastening bolt that connects the shock strut with the shock absorber fork.
Use a combination spanner #18. Use a drive socket #18. Use a torque wrench. Tighten it to 40 Nm torque.+180°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 95
Remove the support from under the arm.
Replacement: coil springs – Audi A4 B8. AUTODOC experts recommend:
Lower the hydraulic transmission jack smoothly, without jerks, to avoid damaging assemblies and mechanisms.
Step 96
Tighten the fastening nut connecting the tie rod end to the steering knuckle. Use a drive socket #21. Use a torque wrench. Tighten it to 100 nm torque.
Step 97
Tighten the upper control arm fasteners (2 pieces). Use a combination spanner #16. Use a drive socket #16. Use a torque wrench. Tighten it to 40 nm torque.
Step 98
Tighten the hub. Use HEX No.H18. Use a torque wrench. Tighten it to 200 nm torque.
Step 99
Treat the shock strut fasteners. Treat all joints of the arm. Use copper grease.
Step 100
Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 101
Clean the brake disk surface. Use a brake cleaner.
AUTODOC recommends:
Replacement: coil springs – Audi A4 B8. After applying the spray, wait a few minutes.
Step 102
Install the wheel.
Replacement: coil springs – Audi A4 B8. Tip from AUTODOC:
To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 103
Screw in the wheel bolts. Use wheel impact socket #17.
Step 104
Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #17. Use a torque wrench. Tighten it to 120 Nm torque.
Step 105
Remove the jacks and chocks.
Step 106
Tighten the upper fastener of the shock absorber strut mount. Use a drive socket #16. Use a torque wrench. Tighten it to 40 Nm torque.+90°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 107
Treat the fasteners of the shock strut mount. Use copper grease.
Step 108
Install and secure the cowl grille.
Step 109
Install the fasteners of the wiper plastic cowl grille.
Step 110
Remove the fender protection cover.
Step 111
Close the hood.
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