OEM Buick LaCrosse Brake Booster

Buick LaCrosse Brake Booster Parts and Q&A

• Brake Booster
  15236237
  Q: How to Ensure Proper Installation of the Brake Booster on Buick LaCrosse?

  A:

  Begin the ly7 booster replacement by collecting a power Brake Booster holder j 22805-b tool. Start the task by detaching the negative battery terminal and removing the plastic panel on the left. Pull down the brake apply sensor (BAS) and its retaining clip so you can disconnect the Brake Booster pushrod from the Brake Pedal. Take out both the exhaust crossover system pipe and disconnect the brake fluid sensor power cable. Take out the fasteners from the left front fender abs module bracket and then remove the bracket from its position. Unscrew the master cylinder nuts before lifting it from the vacuum Brake Booster yet keeping brake hydraulic pipes intact. Detach the vacuum Brake Booster check valve and place its connected hose assembly to the side. Remove all coolant from the system before removing the heat pipes connected to the engine. Use the master cylinder retaining nuts to secure the power Brake Booster holder j 22805-b to the booster unit before rotating the booster counterclockwise to remove it. Set the new vacuum Brake Booster onto the cowl and fit it in place by turning it clockwise using a ratchet attached to the power Brake Booster holder (J 22805-B). Keep away from using a flat screwdriver during this process. When you see the locking tab secured properly you may unfasten the power Brake Booster holder (J 22805-B) and reattach the coolant heater tubes. Secure the vacuum hose and check valve to the booster and carefully fit the master cylinder onto it before tightening its retaining nuts to 33 nm. Install the abs module bracket on its fasteners while keeping torque at 10 nm (7 ft. Lbs.) before joining the Brake Fluid Level Sensor wires and putting back the exhaust system crossover. Connect the Brake Booster pushrod to the Brake Pedal while putting back the retaining clip. Reinstall the bas component and its bolt at 2.5 nm torque before installing the left instrument panel insulation and reattaching the battery cable.
• Brake Booster
  88967269
  Q: How to replace the Power Vacuum Brake Booster (LY7) on Buick LaCrosse?

  A:

  You should start by collecting the power Brake Booster holder part j 22805-b. Begin your repair process by detaching the black battery terminal. Take out the left instrument panel insulator and detach the brake apply sensor (BAS) to remove its Brake Booster pushrod connection from the brake pedal by unlocking the retaining clip. You need to take out the exhaust crossover pipe and detach the electrical connector from the brake fluid sensor. After you remove the bpmv bracket fasteners disconnect the master cylinder from the vacuum Brake Booster without touching the brake hydraulic pipes. First detach the vacuum Brake Booster check valve and then empty the cooling system before uninstalling the coolant heater tubes. Secure the power Brake Booster holder (J 22805-B) onto the booster through its master cylinder nuts. Then release the booster from its front position on the cowl and take out the vacuum Brake Booster. Position the new vacuum Brake Booster over the cowl where its locking tab and flanges fit properly. Use a ratchet connected to power Brake Booster holder (J 22805-B) to rotate the booster clockwise until it locks securely in position. Reconnect the vacuum hose and check valve assembly while placing the master cylinder in position against the booster. Then tighten retaining nuts to 33 n.m (24 lb ft). Put back the bpmv bracket hardware and put the Brake Fluid Level Sensor plug in place before fitting the exhaust crossover pipe. Put brake fluid inside the cooling system before linking the Brake Booster pushrod to the brake pedal then adding the bpmv unit in its bracket. Reinstall the instrument panel shield from the left side while reattaching the vehicle battery.