Use the following procedure in order to test for brake problems
that may be caused by fluid leaks:
- Block the vehicle wheels.
- Start the engine and run the engine at idle speed.
- Shift the transmission into neutral.
- Maintain constant foot pressure on the brake pedal. If the pedal
slowly sinks to the floor, the hydraulic system may have internal leakage,
external leakage or improperly adjusted components.
- Perform a visual inspection of the hydraulic system.
- Check the fluid level of the master cylinder.
| • | A slightly low fluid level in either reservoir can result from
normal wear of the front brake lining. |
| • | An abnormally low fluid level indicates a leak in the hydraulic
system. |
| • | Even with a high fluid level there may be small leaks. |
If you find no external leaks, internal leakage may be the cause. The
master cylinder must be disassembled in order to diagnose internal leakage.
Refer to Master Cylinder Overhaul
.
Brake Hose And Pipe Inspection
Inspect the brake hoses and the brake pipes at least two times a year
with the following procedure:
| • | Inspect the outer cover for road damage, cracks and chafing. |
| • | Inspect the brake hose and the pipe connections for leaks and
damage. Replace any leaky or damaged hose or pipe. |
| • | Check that all hose and pipe mounting hardware is securely in
place. Repair the mounting hardware as needed. |
