OEM 2001 Chevrolet Malibu Brake Master Cylinder

2001 Chevrolet Malibu Brake Master Cylinder Parts and Q&A

• Q: How to service and repair the Brake Master Cylinder on 2001 Chevrolet Malibu?

  A: First service and repair the Brake Master Cylinder by removing it from the vehicle and hold the mounting flange of the Brake Master Cylinder in a bench vise with its rear of the primary Piston easily accessible. Before removing the cap and diaphragm, clean the outside of the master cylinder reservoir nearby the cap, inspect the cap and diaphragm internally and externally for cuts, cracks, nicks, deformations and replace it if any part is affected. Next, remove the master cylinder reservoir and use a smooth, round ended tool to push the primary Piston down and remove the Piston retainer and the primary Piston assembly from the bore. Connect the cylinder inlet ports and the back outlet port, then fill the front outlet port with low pressure, no lubricating, filtered air to push the secondary Piston out together with primary and secondary seals and the return spring, you can throw away the primary Piston assembly, Piston retainer, and seals. For assembly, clean the inutronics and exterior of the master cylinder, secondary Piston and return spring with a denatured alcohol, and inspect for cracks, scoring, pitting or corrosion,and replace the master cylinder if there is an issues found. Dry all parts with non-lubricated and filtered air and lubricate master cylinder bore, secondary Piston, return spring, and all overhaul parts with delco supreme ii (R) the content of that for a clean sealed barrel gm p/n 12377967 or its equivalent brake fluid from a clean sealed container. This is of dot-3 classification. Assemble the lubricated new primary seal and retainer (and new secondary seal) to the secondary Piston and guide the lubricated return spring and secondary Piston assembly into the cylinder bore. Next, install lubricated new primary Piston assembly into the cylinder bore, then depressing the primary Piston with a smooth, round-ended tool then installing the new Piston retainer. Bolt the master cylinder reservoir back to the vehicle, followed by the cover of the reservoir and then the diaphragm, and thereafter bolt the master cylinder into the vehicle.