OEM 2004 Buick Rendezvous Brake Master Cylinder

2004 Buick Rendezvous Brake Master Cylinder Parts Questions & Experts Answers

• Q: How to service and repair the Brake Master Cylinder on 2004 Buick Rendezvous?

  A: When servicing and repairing the Brake Master Cylinder, make safety your main concern, especially knowing brake fluid irritant advisories and the impact it will have on paint and electrical components. Upon adding fluid, delco supreme 11, gm p/n 12377967 (Canadian P/N 992667), or equivalent dot-3 brake fluid; from a clean, sealed container should be used as it is the unpolluted counterpart, as attempting to refill with a contaminant could damage the internal rubber seals. Place the mounting flange of the Brake Master Cylinder into a bench vise for access of the rear of the primary Piston and take out the master cylinder reservoir cap and diaphragm. Fit appropriate fittings to the master cylinder ports to facilitate connecting transparent hoses thereinto the reservoir. Top up the reservoir to at least half with the suggested brake fluid, while accommodating the hoses ends in the fluid. With a standard, round-ended tool, depress and release the principal Piston approximately 25 m (1 inch) several times and follow the fluid flow out of the ports; that is, as air is bled, the pressure to push the Piston will become greater and the distance travelled less. Repeat this process until there is free flow of fluid from the ports without air bubbles. Then, eliminate the transparent hoses coming from the reservoir, put the master cylinder reservoir cap and diaphragm back on, and disattach the fittings with the hoses from the ports and wrap the master cylinder with a shop cloth to prepent spills before finally handing it off from the vise.