Master Cylinder Reservoir Replacement
Master Cylinder Reservoir ReplacementRemoval Procedure
1. Remove the master cylinder from the vehicle.
2. Remove the cover and diaphragm.
3. Drain the brake fluid from the reservoir.
4. Secure the master cylinder in a vise. Do not clamp the master cylinder body, secure only at the flange.
5. Remove the reservoir body by pulling the body straight up and away from the cylinder body.
6. Remove the seals from the grooves in the reservoir.
Installation Procedure
1. Inspect the reservoir for cracks or deformation. If found, replace the reservoir.
2. Clean the reservoir with denatured alcohol, or equivalent.
3. Dry the reservoir with non-lubricated, filtered air.
4. Lubricate the new seals and the outer surface area of the reservoir-to-housing barrels with Delco Supreme 11 (R) (GM P/N 12377967) or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
5. Install the lubricated seals. Make sure the seals are fully seated.
6. Install the reservoir to the master cylinder body.
Use your hand to press the reservoir straight down into the body.
7. Install the diaphragm.
8. Install the cover.
9. Remove the master cylinder from the vice.
10. Install the master cylinder to the vehicle.