OEM Buick Terraza Brake Master Cylinder

Buick Terraza Brake Master Cylinder Parts Questions & Experts Answers

• Master Cylinder
  18022002
  Q: How to service and repair the Brake Master Cylinder on Buick Terraza?

  A: After placing the Brake Master Cylinder mounting flange into the bench vise grab you should position it to access the rear side of the primary Piston. Put suitable hoses into the master cylinder ports through new fittings after removing its reservoir diaphragm and cap. Install transparent fluid lines onto these fittings before bringing them into the reservoir system. Place delco supreme ii®, gm p/n 12377967 (Canadian P/N 992667) brake fluid from a sealed container into the reservoir until it reaches the halfway mark while completely submerging the ports under the fluid. Depress the primary Piston several times using a rounded tool to 25mm depth while observing fluid flow from the ports. The increasing effort needed to push the Piston shows that air bleeding process is complete. Perform this operation until fluid flows easily from the ports without air bubbles appearing. Reinstall the master cylinder parts and take off fittings with hoses from ports while using cloth to catch any spills.