Hydraulic circuit
Engines MR20DE and QR25DE. 1. ABS actuator and control unit; 2. Front wheel disc brake; 3. Master cylinder assembly; 4. Vacuum brake booster; 5. Coupling; 6. Rear wheel disc brake; A. Brake pipe; B. Brake hose
Removal and installation
Removal
Attention. Do not drink brake fluid onto painted areas; it may damage the paintwork. If brake fluid spills on painted areas, wipe it off immediately and rinse with water.
1. Remove the wheels.
2. Drain the brake fluid. See above.
3. Using a spanner, loosen the cap nut and disconnect the brake pipe from the hose.
Attention:
- Do not scratch the union nuts and brake lines.
- Do not bend, twist, or pull brake hoses and pipes.
- To prevent dust and other foreign particles from getting into the brake fluid, seal the open ends of the brake lines and hoses when disconnecting them.
4. Unscrew the connecting bolt and disconnect the brake hose from the caliper assembly.
5. Remove the locking plate and brake hose from the vehicle.
Installation
Attention. Do not spill brake fluid onto painted areas as it may damage the paintwork. If brake fluid spills on painted areas, wipe it off immediately and rinse with water.
1. Place the connecting bolt and copper washers on the brake hose.
Attention. Do not reuse copper washers.
2. Connect the brake hose aligning it with the protrusions (A) on the caliper assembly, and tighten the connecting bolt (1) with the required torque.
3. Connect the brake pipe to the brake hose, tighten the union nut by hand as far as possible, and secure the brake hose to the bracket with a locking plate.
Attention. Avoid sharp bends and twisting of brake hoses and tubes.
4. Using a union torque wrench, tighten the union nut to the required torque.
Attention. Do not scratch the union nuts and brake lines.
5. Fill with fresh brake fluid and bleed. See above.
Attention. Do not reuse drained brake fluid.
6. Install the wheels.
Check after installation
1. Check: there are no scratches on the brake pipes and hoses, they are not twisted or deformed; whether they touch other components when the steering wheel rotates; whether the connections at the joints have become loose.
2. Check for fluid leaks from the components by pressing the brake pedal for approximately 5 seconds with a force of 785 N (80 kg) at idle speed.
Attention. If a brake fluid leak is detected, tighten the components at the joints with the required torque or replace the faulty one (damaged, worn or deformed) component.