HYDRAULICS
HYDRAULICS
Brake fluid leak
Pressure loss
Air in the system
- Problem
- Brake fluid is leaking from the rear of the brake master cylinder bore
- Likely cause
-
- Brake master cylinder seals are damaged and leaking
- Vacuum booster input seal and/or pushrod misalignment
- Solutions
-
- Check the brake master cylinder seals for damage
- Check if vacuum booster input seal and pushrod are properly aligned
- Replace a brake master cylinder if necessary
- Problem
- Brake pedal is sinking regularly when brakes are applied
- Likely cause
-
- Pressure loss due to cylinder piston seal failure
- Solutions
-
- Replace the brake master cylinder
- Problem
- Soft or spongy brake pedal
- Likely cause
-
- There is an air in the brake lines
- Solutions
-
- Check the brake fluid motion inside the brake master cylinder reservoir
- If bubbles are observed inside a reservoir, change the brake fluid
- Perform a brake bleeding
