Caprice Wagon V8-307 5.0L (1987)
Brake Master Cylinder: Service and Repair
Master Cylinder Disassembly
With Powermaster
WARNING:Failure to fully depressurize Powermaster unit before performing service operations could result in injury to service personnel and
damage to painted surfaces.
Exploded View Of Powermaster Assembly
Disassembly
1. Depressurize Powermaster by turning ignition off, applying and releasing brake pedal a minimum of 10 times using approximately 50 pounds force
on the pedal.
2. Remove reservoir cover and diaphragm (32). Empty fluid from reservoir (33).