- In order to inspect for external brake fluid leaks, first check
the fluid level in the master cylinder.
While a slight brake fluid level drop can be considered a normal condition
due to brake lining wear, a very low level may indicate a brake fluid leak
in the hydraulic system.
- If the fluid level is abnormally low, adjust the brake fluid level.
Refer to
Master Cylinder Reservoir Filling
.
- Start the engine and allow it to idle.
- Apply constant, moderate foot pressure to the brake pedal.
If the brake pedal gradually falls away while under foot pressure, there
may be a brake fluid leak.
- Turn OFF the ignition.
- Visually inspect the following brake system components for brake
fluid leaks; give particular attention to all brake pipe and flexible hose
connections to ensure that there are not any slight brake fluid leaks --
even though the brake pedal may feel firm and hold steady:
| • | Master cylinder brake pipe fittings |
| • | All brake pipe connections |
| • | Brake pipes (for excessive corrosion, damage, and/or leaking fittings) |
| • | Brake hoses and connections |
| • | Brake calipers and/or wheel cylinders, if equipped |
- While slight dampness around the master cylinder reservoir can
be considered acceptable, brake fluid leaking from any of the brake system
components requires immediate attention. If any of these components exhibit
signs of brake fluid leakage, repair or replace the component(s). After the
repair or replacement, reinspect the hydraulic brake system to assure proper
function.
