Caprice Wagon V6-262 4.3L (1987)
Hydraulic Brake Booster: Service and Repair
Disassembly
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
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).
