Brake Bleeding: Service and Repair

Brake hydraulic system, bleeding and changing brake fluid

WARNING: Brake fluid is poisonous.
- It must NEVER be removed by siphoning with your mouth.
- If brake fluid contacts skin or eyes, flush or wash adequately to prevent irritation. Got medical attention immediately if necessary.
- rake fluid must be disposed of properly in compliance with environmental regulations.

CAUTION:
- Do not allow brake fluid to mix with liquids that contain mineral oils (e.g. motor oil, cleaning agents). Mineral oils damage the plugs and seals in the brake hydraulic system.
- Brake fluid must not be allowed to come into contact with paint work due to its caustic effect.
- Brake fluid is hygroscopic, in other words it absorbs moisture from the surrounding air, and must therefore always be stored in airtight containers.

Note:
- Only use new brake fluid conforming to US standard FMVSS 116 DOT 4.
- Genuine VW/ Audi brake fluid conforms to this specification.
- Rinse off any spilled brake fluid using plenty of water.
- When the system is open do not work with compressed air and do not move the vehicle.
- During the final road test, make sure at least one ABS-controlled braking operation is carried out (normal pulsations must be felt at the brake pedal).

Bleeding using US1116 brake bleeder
- Connect US1116 brake bleeder.
- Open bleeder screws in following sequence and bleed brake calipers.

Bleeding sequence
1. Right-rear brake caliper
2. Left-rear brake caliper
3. Right-front brake caliper
4. Left-front brake caliper