1997 AUDI A4 Front Brake Service Workshop Manual

46-15


12 -
Harness holder
Only on models with wear indicatorsInstall harness for brake pad wear indicator
into harness holder
13 -
Brake pads Always replace as a set on both wheels of
an axle Different left and right sidesRemoving and installing page 46
-16
With wear indicator
Once wear limit is reached (3 mm, 0.12
in.), warning light in instrument panel
comes on Brake pad thickness: 14 mm (0.55 in.)Outer pads have an adhesive with a
protective sheet on the backing plate;
remove this sheet before installing
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46-16

Double piston front caliper brake pads,
removing and installing


Removing

Note:
If brake pads are to be re-used, mark installed
positions when removing. Re-install at the same
point, otherwise the car may pull to one side!

- Raise vehicle.

- Remove wheels.

WARNING!
Brake fluid is poisonous and must never be removed by siphoning
with your mouth.
CAUTION! - Secure brake disc with wheel bolt (left arrow).
-
Remove both Torx bolts for outer brake pads (right arrows).
Extract part of the brake fluid from the brake fluid reservoir before
pushing back the pistons. If this is not done, particularly if the brake fluid has been topped
up in the meantime, brake fluid may flow out and cause damage.
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Use the bleeder bottle or a plastic bottle, which is used only for
brake fluid, for extracting the fluid. The inner brake pad (with expanding spring) is marked with an
arrow that must point in the direction of rotor rotation when the
vehicle is moving forward. Incorrect installation can result in
excessive noise.
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46-17


- Push piston back into brake caliper housing.
- To do this use screwdriver inserted into floating caliper frame and
press frame outward.
- Remove outer brake pads first by pressing pads off brake caliper using
screwdriver.
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46-18


Note:
Installing - Press floating frame in direction of left arrows as far as stop.
- Carefully press brake pads out of pistons using screwdriver (right
arrow) and remove from caliper housing.
Thoroughly clean the brake caliper housing before installing the new
brake pads. Pay particular attention to cleaning the residues left from the outer
brake pad adhesive.

Note:
Do not damage the protective boots when installing the brake pads. - Install bottom and top brake pads into pistons.
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46-19


CAUTION!
The repair kit contains four self-locking Torx bolts which must
always be installed.
Note:
After replacing brake pads depress the brake pedal firmly several times
while the car is stationary so that the brake pads adjust to their normal
operating positions. - Press floating frame out as far as stop.
- Remove protective sheet from back of outer brake pads.

Note:
Make sure wheels do not hang on brake calipers when they are installed.
The brake pads could be pushed out of the caliper frame. -
Install Torx bolts (right arrows) from repair kit into floating frame to
secure outer brake pads in position. Tightening torque: 25 Nm (18 ft lb)
- Remove wheel bolt from wheel hub.
- Install wheels and tighten wheel bolts.
Tightening torque: 120 Nm (89 ft lb)
- Check brake fluid level and top up if necessary.
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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pair&id=AUDI.B5.SU03.46.1