OEM 2004 GMC Savana 3500 Brake Booster

2004 GMC Savana 3500 Brake Booster Parts Questions & Experts Answers

• Q: How to replace the hydraulic brake booster accumulator on 2004 GMC Savana 3500?

  A: After securing safety by doing at least ten brake pedal depressions you can begin the replacement process of the hydraulic Brake Booster accumulator. Place the master cylinder on the engine compartment after extracting it from the hydraulic booster yet keeping brake pipes intact. Use the j 26889 (Accumulator Piston Compressor) to place over the accumulator end and attach a nut on the stud before applying a c-clamp for depressing the accumulator. The brake pedal must be depressed for ten successive times if the accumulator fails to move with normal pressure. The retaining ring requires rotation until it reaches the edge of the access hole. Then insert a small tool into this hole to hold the ring while rotating it further until one end sits under the hole. The c-clamp should have a small hook-shaped tool to remove the accumulator retainer ring. After the c-clamp has been released, the nut from the stud must be removed before removing the j 26889 piece. The last step includes removing both the accumulator along with its o-ring seal. The installation requires power steering fluid gm p/n 1052884 (Canadian P/N 993294) or equivalent for lubricating all seals and metal points before assembling the accumulator with the o-ring seal. Put the j 26889 around the accumulator end before screwing the stud nut while activating the accumulator with a c-clamp. Insert the accumulator retainer ring while using the c-clamp to hold and detach the j 26889 and its associated stud nut. Remove the j 26889 tool. Fasten the master cylinder onto the hydraulic booster by following the installation procedure while tightening the nuts to 36 nm (27 ft. Lbs.).