Audi Q5: Brake Caliper, Brake 1LA/1LJ/1ZB/1ZT, Replacing
Special tools and workshop equipment required
- Torque Wrench 1331 5-50Nm -VAG1331-
- Torque Wrench 1331 Insert - Reversible Ratchet -VAG1331/1-
- Torque Wrench 1332 40-200Nm -VAG1332-
- Torque Wrench 1332 Insert - Reversible Ratchet -VAG1332/1-
- Brake Pedal Actuator -VAG1869/2-.
- Container from the Brake Charger/Bleeder Unit -VAS5234-
Removing
- Remove affected front wheel. Refer to →Wheel and Tire Guide; Rep. Gr.44.
- Insert the Brake Pedal Actuator -VAG1869/2- between the brake pedal and driver seat. Preload the brake pedal at least 60 mm.
Note
By doing this, the valves in the brake master cylinder are closed and the brake fluid reservoir does not run empty.
- Connect the container hose to a front brake caliper bleed screw.
- Open brake caliper bleed screw on the front to reduce the pressure from the brake system.
WARNING
- Brake fluid is poisonous. NEVER siphon brake fluid with your mouth!
- Wash off any brake fluid that comes into contact with the skin with a lot of water.
- If brake fluid comes in contact with the eyes, wash out the eye(s) and see a doctor.
- Close the bleeder screw.
Note
Do not remove the Brake Pedal Actuator -VAG1869/2-.
- Remove brake hose from brake caliper.
- Remove the brake pads. Refer to → Chapter "Brake Pads, Removing and Installing, Brake 1LA/1LJ/1ZB/1ZT".
- Remove brake caliper -7-.
Caution
Never remove bolts -6 and 9-
- Remove the bolts -3- on the brake carrier -2- while holding the carrier securely.
- Remove the brake carrier.
Installing
- Tightening specifications. Refer to → Chapter "Overview - Front Brakes, 1LA, 1LJ, 1ZB and 1ZT".
Note
Use new bolts. Refer to Parts Catalog.
- Mount brake carrier -2-.
- Secure the brake carrier with new bolts -3-.
- Install the brake pads. Refer to → Chapter "Brake Pads, Removing and Installing, Brake 1LA/1LJ/1ZB/1ZT".
- Install the brake hose -5- into the brake caliper and tighten.
WARNING
- Brake fluid is poisonous. NEVER siphon brake fluid with your mouth!
- Wash off any brake fluid that comes into contact with the skin with a lot of water.
- If brake fluid comes in contact with the eyes, wash out the eye(s) and see a doctor.
- Remove the Brake Pedal Actuator -VAG1869/2-.
Only bleed the brakes on the wheel which the brake caliper and the brake line was separated.
Note
Only bleed the brakes on the wheel which the brake caliper and the brake line was separated. If the brake pedal still feels "soft", completely bleed the brakes. Refer to → Chapter "Hydraulic System, Bleeding".
WARNING
There is the risk of an accident.
- Before moving the vehicle, press the brake pedal firmly several times to seat the brake pads correctly in their operating position.
- Make sure the brakes are working correctly before driving the vehicle.
Brake Caliper, Brake 1LB/1LC/1LE/1LP Brake, Replacing
Special tools and workshop equipment required
- Torque Wrench 1332 40-200Nm -VAG1332-
- Torque Wrench 1332 Insert - Reversible Ratchet -VAG1332/1-
- Brake Pedal Actuator -VAG1869/2-.
- Container from the Brake Charger/Bleeder Unit -VAS5234-
Removing
- Remove affected front wheel. Refer to →Wheel and Tire Guide; Rep. Gr.44.
- Insert the Brake Pedal Actuator -VAG1869/2- between the brake pedal and driver seat. Preload the brake pedal at least 60 mm.
Note
By doing this, the valves in the brake master cylinder are closed and the brake fluid reservoir does not run empty.
- Connect the container hose to a front brake caliper bleed screw.
- Open a brake caliper bleed screw on the front brake caliper to reduce the pressure from the brake system.
WARNING
- Brake fluid is poisonous. NEVER siphon brake fluid with your mouth!
- Wash off any brake fluid that comes into contact with the skin with a lot of water.
- If brake fluid comes in contact with the eyes, wash out the eye(s) and see a doctor.
- Close the bleed screw.
Note
Do not remove the Brake Pedal Actuator -VAG1869/2-.
- Remove the brake pads. Refer to → Chapter "Brake Pads, Removing and Installing, Brake 1LB and 1LC".
- Remove the brake hose -10-
- Remove the bolts -1-.
- Remove brake caliper -2-.
Installing
Note
Use new bolts. Refer to Parts Catalog.
- Install the brake caliper.
- Tighten the brake caliper with the new bolts.
- Install the brake hose into the brake caliper and tighten.
WARNING
- Brake fluid is poisonous. NEVER siphon brake fluid with your mouth!
- Wash off any brake fluid that comes into contact with the skin with a lot of water.
- If brake fluid comes in contact with the eyes, wash out the eye(s) and see a doctor.
The brake hose needs to sit in the mount.
- Attach the brake pad wear wire.
- Install the brake pads. Refer to → Chapter "Brake Pads, Removing and Installing, Brake 1LB and 1LC".
- Remove the Brake Pedal Actuator -VAG1869/2-.
Only bleed the brakes on the wheel which the brake caliper and the brake line was separated.
Note
Only bleed the brakes on the wheel which the brake caliper and the brake line was separated. If the brake pedal still feels "soft", completely bleed the brakes. Refer to → Chapter "Hydraulic System, Bleeding".
WARNING
There is the risk of an accident.
- Before moving the vehicle, press the brake pedal firmly several times to seat the brake pads correctly in their operating position.
- Make sure the brakes are working correctly before driving the vehicle.
