How to replace the rear hub bearing on Audi A3 8P1
Transcript of How to replace the rear hub bearing on Audi A3 8P1
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How to replace the rear hub bearingon Audi A3 8P1
VIDEO TUTORIAL
This replacement procedure can be used for:AUDI A3 (8P1) 1.2 TSI, AUDI A3 Convertible (8P7) 1.2 TFSI, AUDI A3 Sportback(8PA) 1.2 TSI
The steps may slightly vary depending on the car design.
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Important!
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REQUIRED TOOLS:
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Wire brush
WD-40 spray
All-purpose cleaning spray
Brake cleaner
Copper grease
Combination spanner #13
Combination spanner #15
XZN socket bit # 14
XZN socket bit # 16
Torx bit T30
Drive socket # 13
Wheel impact socket #17
Ratchet wrench
Torque wrench
Tap wrench
Rubber mallet
Crow bar
Wheel chock
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AUTODOC recommends:
CARRY OUT REPLACEMENT IN THE FOLLOWING ORDER:
1
Secure the wheels with chocks.
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Do not re-use the bearing assembly of your Audi A3 8P1 car.
The wheel hub bearing replacement procedure is identical for bothwheels on the same axle.
All work should be done with the engine stopped.
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2
Loosen the wheel mounting bolts. Use wheel impact socket #17.
3
Raise the rear of the car and secure on supports.
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4
Unscrew the wheel bolts.
AUTODOC recommends:
5
Remove the wheel.
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To avoid injury, hold up the wheel when unscrewing the bolts.
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6
Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
7
Unscrew the brake caliper fastening. Use a combination spanner #13. Use a combination
spanner #15.
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8
Spread the brake pads. Use a crowbar.
9
Remove the brake caliper. Use a crowbar.
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AUTODOC recommends:
10
Remove the brake pads.
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Tie the caliper to the suspension or to the body with a wire withoutdisconnecting from the brake hose to prevent depressurization ofthe 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 beenremoved. As a result, the piston can fall out from the brake cylinder,and brake fluid leakage and depressurization of the system mayoccur.
Check the brake caliper bracket, brake caliper guide pins and boots.Clean them. Replace, if necessary.
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11
Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
12
Unscrew the caliper bracket fastening. Use XZN #14. Use a tap wrench. Use a ratchet wrench.
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13
Remove the caliper bracket
14
Clean the brake disc fasteners. Use a wire brush. Use WD-40 spray.
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15
Unscrew the brake disc fastening Use Torx T30. Use a ratchet wrench.
16
Remove the brake disc.
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17
Remove the hub bearing protection cap. Use a crowbar. Use a rubber mallet.
AUTODOC recommends:
18
Unscrew the wheel hub axle nut. Use XZN #16. Use a tap wrench.
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Some cars are not equipped with wheel hub caps.
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19
Remove the fastening bolt.
20
Remove the hub and the bearing together, since they are a sealed unit.
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21
Clean the hub bearing mounting seat. Use all-purpose cleaning spray.
22
Install the new wheel hub with a bearing.
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23
Install the fastening bolt.
24
Tighten the hub. Use XZN #16. Use a torque wrench. Tighten it to 155 nm torque.
AUTODOC recommends:
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The wheel bearing unit must not tilt on the axle pin.
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25
Install the hub bearing protection cap. Use a rubber mallet.
26
Treat the hub where it contacts the brake disk. Use copper grease.
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27
Install the brake disc.
28
Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 9 nm
torque.
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29
Install the brake caliper bracket.
30
Tighten the brake caliper bracket. Use XZN #14. Use a torque wrench. Tighten it to 70 nm
torque.
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31
Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.
AUTODOC recommends:
32
Install the brake pads.
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After applying the spray, wait a few minutes.
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33
Install the brake caliper and fix it. Use a combination spanner #13. Use a drive socket #13. Use
a torque wrench. Tighten it to 30 Nm torque.
34
Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
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35
Clean the brake disk surface. Use a brake cleaner.
AUTODOC recommends:
36
Install the wheel.
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After applying the spray, wait a few minutes.
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AUTODOC recommends:
37
Screw in the wheel bolts. Use wheel impact socket #17.
38
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.
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To avoid injury, hold up the wheel when screwing in the fasteningbolts.
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39
Remove the jacks and chocks.
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The document contains only general recommendations that may be useful for you when you perform repair or replacement work. AutoDoc shallnot be liable for any loss, injury, damage of property occurring in the repair or replacement process due to incorrect use or misinterpretation ofthe provided information.
AutoDoc shall not be liable for any possible mistakes and uncertainties in this guide. The information provided is for information purposes onlyand cannot replace advice from specialists.
AutoDoc shall not be liable for incorrect or hazardous usage of equipment, tools and car parts. AutoDoc strongly recommends to be carefuland observe the safety rules when performing repair or replacement works. Remember: usage of low quality auto parts does not guaranteeyou the appropriate level of road safety.
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