ECU AUDI A4 1999 B5 / 1.G Front Brake Service Workshop Manual

46-8


CAUTION!
Installing - Remove both guide pins from brake caliper.
- Remove brake caliper housing and secure to body.
Do not loosen brake hose or lines.Secure the brake caliper with a piece of wire in order to relieve the
stress on the brake hose. Do not allow the caliper to hang by the brake hose.
- Remove outer brake pad from brake carrier.
- Pull inner brake pad (with expanding spring) out of brake caliper piston.

WARNING!
Brake fluid is poisonous and must never be removed by siphoning
with your mouth. - Push piston back into brake caliper housing.
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46-13


CAUTION! 2 -
Brake disc
Always replace as a set on both wheels of
an axle Ensure adequate thicknessTo remove, first unbolt brake caliper
Internally ventilated brake discDiameter: 245 mm (9.65 in.)Thickness: 30 mm (1.18 in.)Wear limit: 28 mm (1.10 in.)
3 -
Brake caliper

Do not allow the caliper to hang by the brake
hose. The unsupported weight can stretch
and damage the hose.
Secure the brake caliper with a piece of wire
in order to relieve the stress on the brake
hose.
With the exception of replacing brake pads
page 46
-16
and servicing front brake calipers
page 46
-11
, no further repairs may be
performed to the brake caliper
4 -
Clamping spring
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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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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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ge 22 of 22 Front brakes, servicin
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11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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e=re
pair&id=AUDI.B5.SU03.46.1