Checking For Leaks Audi V8 4C

Checking For Leaks

1. Connect pressure gauge VAG 1310 to brake caliper (left front wheel) and brake caliper (left rear wheel) and bleed both gauges.
2. Depress brake pedal until gauge on front axle indicates 1450 psi (100 bar). Pressure of 100 bar should be kept constant for 5 seconds. During this time, pressure on rear gauge may change by maximum 145 psi (10 bar). If not, replace brake pressure regulator.

Scheme 19

Scheme 20

Scheme 21

Scheme 22

1. Remove wheels.
2. Mark reusable brake pads when removing. Reinstall in same position, otherwise braking effect will be uneven.
3. Unhook brake lining retaining spring by pressing spring in direction. (Scheme 20)
4. Push back piston in brake caliper housing by pressing brake caliper housing against brake disc as shown. (Scheme 21)
5. Press brake caliper housing in direction of arrow shown in illustration as far as possible. (Scheme 22)
6. Remove brake pad near piston.
7. Remove brake disc wheel hub locating bolt. (Scheme 23)
8. Tilt brake disc outward and remove from brake caliper.
9. Remove brake pad wear indicator wire.
10. Unclip connection from mounting. (Scheme 24)
11. Remove outer brake pad from brake caliper housing.
12. Disconnect brake pad wear indicator wire from brake pad. (Scheme 25)

Scheme 23

Scheme 24