Master cylinder and brake booster maintenance
The brake fluid level must remain constant and must be checked on a weekly basis. Any drop in the fluid level below the expected level (due to lining wear) indicates a leakage in the system. The cause of the loss of fluid must be investigated immediately and remedied. Fluid loss can cause the brakes to fail. If the master cylinder is leaking, it must be removed and closely inspected.
If the inner surface is in perfect condition, new seals can be fitted but if the bore shows signs of wear or corrosion, the cylinder must be replaced. New air filters and dust collars are generally available as replacement parts for mechanical brake boosters and should be renewed every three years or 60,000 km. It is not possible to carry out maintenance on brake boosters but the condition of the vacuum hose must be checked at regular intervals