C 2500 Truck 2WD V8-6.5L DSL Turbo VIN S (1997)
Brake Master Cylinder: Testing and Inspection
High Pressure Check
This procedure checks for internal and external fluid leaks such as connections, hoses, casting and gross internal leaks. Leaks will be revealed by the
following procedure:
1. With the engine running, apply the brake at a slow rate (approximately 1/8 inch per second) to generate pressure in the master cylinder. Gradually
increase pedal force and look for gradually increasing brake pedal travel or the "falling away" feel.
2. Look for external fluid leakage on the ground, at pipe connections and behind tires.
3. If fluid is evident around any component, replace the failed component. If the fluid leak is at a connection, tighten connection to specified torque
and recheck.