Hydraulic System, Post-Bleeding
Special tools and workshop equipment required
- Brake Charger/Bleeder Unit: VAS5234 with Brake Bleeder Adapter : VAS5234/1
- or
- Brake Filling and Bleeding Equipment: VAS6860 with Brake Charger/Bleeder Unit - Adapter: VAS5234/1A
- Brake Bleeding Tool Set: VAS6564
- Wrench - Brake Bleeder Set: VAS5519
Perform the post-bleeding procedure when:
- The brake pedal travel is too long, or the so-called >>soft brake pedal<<
Procedure
A second technician is required for post-bleeding.
-- Connect the : VAS6860 .
Use a suitable bleeder hose. It must be seated tightly on the bleed screw so that no air can enter the brake system.
-- Attach the bleed hose from the bleeder bottle to the bleed screw.
Bleeding Sequence
1 - Left Front Brake Caliper
2 - Right Front Brake Caliper
3 - Left Rear Brake Caliper
4 - Right Rear Brake Caliper
Bleed the brake caliper at each bleed screw. If the brake caliper has two bleed screws, bleed the outer screw first.
-- Depress the brake pedal forcefully and hold.
-- Open the bleed screw on the brake caliper.
-- Press the brake pedal down until it stops.
-- Close the bleeder screw with the pedal depressed.
-- Release the brake pedal slowly.
-- Repeat the bleeding procedure in the specified sequence for the remaining brake calipers.
This bleeding procedure must be performed five times per brake caliper.
A road test must be performed after bleeding. During this, at least one ABS control must be performed!
Risk of accident!
- Make sure the brakes are working correctly before driving the vehicle for the first time.
Tightening Specifications
- Refer to OVERVIEW - FRONT BRAKES
- Refer to OVERVIEW - REAR BRAKES