GM 19371359
Brake Booster

The first step for changing a hydraulic Brake Booster requires activation of the park brake and wheel blocking followed by removal of the master cylinder from the booster without separating any pipes. First remove the master cylinder from the booster while keeping its pipes still attached before disconnecting the inlet hose as well as the steering gear and return hoses attached to the booster assembly. Set the master cylinder on the engine compartment while you remove the stop lamp switch and the 4 booster to bulkhead nuts to detach the booster assembly and gasket. Place the gasket first before installing the booster assembly. Install the four booster to bulkhead nuts while tightening them to 36 nm (26 ft. Lbs.). Attach the stop lamp switch and master cylinder first then finish by linking all steering gear hoses with the return hose while bringing the inlet hoses into place. To conclude the process of installation bleed the hydraulic booster system then release the park brake followed by clearing the wheel blocks. The use of fluids demands careful treatment since brake fluid both irritates skin and harms system components while power steering fluid should be used for boosters yet brake fluid should be used at master cylinders and brake pipes.

Disconnect the power brake booster inlet hose, the steering gear inlet hose, and the power brake booster outlet hose.

Release the C-clamp, remove the nut from the stud, and take off the J 26889.

Use caution with brake fluid as it can be an irritant and may damage parts and electrical components.