OEM Buick Enclave Brake Booster

Buick Enclave Brake Booster Parts and Q&A

• Brake Booster
  19418519
  Q: How to replace the power vacuum brake booster on Buick Enclave?

  A:

  Find a leveled space to work and engage the parking brake to replace the power vacuum Brake Booster. Press and release the brake pedal while the engine is off to use up all brake vacuum pressure until the pedal responds firmly. Disconnect the air cleaner assembly while taking off the master cylinder fluid level sensor connection and brakeduster components from their place. Take out and put aside the vacuum Brake Booster vacuum sensor. Take off the brake pipes from their anchorage point on the frame rail but keep the harnesses connected. Then uninstall the bpmv nuts without unhooking the brake pipes. Shift the bpmv setup ahead before unscrewing both master cylinder nuts while keeping brake tubes linked to their ports in the cylinder. Hold up the master cylinder unit from its base with heavy mechanics wire for support. First take out the left side instrument panel insulator panel plus both steering column opening filler and brake pedal pushrod retaining clip. Remove the clevis pin from the brake pedal pushrod to disconnect the system and then take out the intermediate Steering Shaft. Push vacuum Brake Booster forward and raise it up until mounting studs clear dash panel before you uninstall the device. Check the vacuum Brake Booster gasket for damages before installing it. Replace damaged sections when needed. Place the vacuum Brake Booster mounting studs on the dash panel and fasten the vacuum Brake Booster in place at 25 n.m (18 lb ft). Install the intermediate Steering Shaft and attach the brake pedal pushrod to the pedal using the clevis pin while installing the retaining clip. Place back the steering column opening filler plus the left side instrument panel insulator panel. Install the master cylinder first by checking the seal condition then fitting it into the vacuum booster unit. Secure the 2 Brake Master Cylinder nuts with 20 n.m (15 lb ft) torque. Place the bpmv assembly on top of the studs then fasten the two nuts to both the bracket and bpmv before tightening them to 20 n.m (15 lb ft). Mold the brake pipes back into their frame rail slot then connect the hydraulic fluid sensor wiring to its designated part. Use a bit of denatured alcohol as needed when setting up the Brake Booster vacuum sensor and Brake Booster check valve and hose assembly. Recover the air filter housing in its proper location.