Servicing front brakes — AUDI

Servicing front brakes
Note
Always install all parts supplied in repair kit.
After renewing brake pads, depress brake pedal firmly several times with vehicle stationary so that the pads are properly seated in their normal operating position.
Make sure that the brakes work properly before the vehicle is driven on the road.
To draw off brake fluid from brake fluid reservoir use a bleeder bottle which is used only for brake fluid. Brake fluid is poisonous and must NOT be drawn off by sucking through a hose.
Check that the brake caliper moves freely by moving it from side to side.
After renewing brake pads, depress brake pedal firmly several times with vehicle stationary so that the pads are properly seated in their normal operating position.
Use the brake filling and bleeding equipment
VAS 5234
to extract brake fluid from brake fluid reservoir.
Insert the brake pedal actuator
V.A.G 1869/2
before removing a brake caliper or disconnecting a brake hose (relieve pressure when doing so).
Brake line
Screw into brake caliper housing
Screw into brake hose, counter hold on brake hose hexagon.
Do not twist hose when fitting
Ensure that lugs are properly seated in grooves in bracket.
Brake line connection to brake hose: 12 Nm
Brake line connection to brake caliper: 19 Nm
Make sure the brake hose is routed correctly. The brake hose must not be kinked or crushed or chafe against the body at any point.
Brake caliper
If assembly work is required, do not leave caliper hanging from brake hose but secure it to body with wire
Do not twist hose when installing
Remove to change brake pads
Removing and installing brake caliper
Chapter
Renewing brake caliper
Chapter
Servicing
Chapter
Caution
The four guide pins for the brake pads in the brake caliper must not be loosened.
Bolts for brake caliper
Only unfasten the brake caliper at these bolts
240 Nm
Damper spring
Note
Pay attention to correct installation position.
Pad wear indicator wire
Only fitted on inner brake pad.
Removing and installing
Chapter
Note
Make sure the contact for the brake pad wear indicator is properly positioned in the retaining clip in the inner brake pad.
Brake disc
Disc thickness and wear limit
Chapter
Do not disconnect brake line when changing brake discs
Always renew on both sides of axle
Unbolt brake caliper prior to removing; do not disconnect brake line
Removing and installing
Chapter
Bolt for brake disc
20 Nm
Bolt
10 Nm
Splash plate for brake disc
Removing and installing
Chapter
Brake pads
Caliper must be removed before removing brake pads
Note
A wire for the wear indicator is fitted to the inner pad.
Remove any adhesive foil from backplate before inserting
Before fitting pads, clean guide surfaces and apply a thin coating of polycarbamide grease
Electronic parts catalogue
Always renew on both sides of axle
Wear limit
Chapter
Removing and installing
Chapter
Note
Clean the brake calipers thoroughly (grease-free) before inserting new brake pads. When doing this, make sure that all adhesive foil residue on the contact surfaces for the outer brake pad is removed.
Note
Make sure the contact for the brake pad wear indicator is properly positioned in the retaining clip in the inner brake pad.
Wheel bearing housing