OEM 2009 Ford F-150 Brake Booster

2009 Ford F-150 Brake Booster Parts Questions & Experts Answers

• Q: How to service and repair the vacuum brake booster on 2009 Ford F-150?

  A: Start vacuum brake booster servicing and repair by taking out the air filter element followed by removing the two bolts from the coolant expansion tank assembly before placing it in position. After reattaching the parts replace the bolts with Torque setting at 15 Nm (133 lb-in). Use the brake pedal to press-release five times while the engine is off to eliminate vacuum pressure from the brake booster. Start by disconnecting the brake fluid level switch and remove the two brake master cylinder nuts while placing the master cylinder on support wires with mechanic's wire. The nuts should be tightened to 25 Nm (18 lb-ft) during reinstallation. Proceed by removing the brake pedal travel sensor electrical connector together with the manifold vacuum outlet assembly from the brake booster. The stoplamp switch must be removed with the brake pedal at rest position while the plunger remains compressed to allow bracket rotation failure to do this can harm the switch. You must first detach the stoplamp switch before using the end tabs to loosen the brake pedal arm pin while disconnecting the booster push rod from the brake pedal arm. The four brake booster pedestal nuts need removal after you have unfolded the sound insulation to access them properly and you should tighten these nuts to 25 Nm (18 lb-ft) using a clockwise method starting at the upper left nut when reinstalling. The stoplamp switch installation requires proper positioning of both the booster push rod connected to the brake pedal and the pedal in its resting position to prevent wrong switch adjustment and possible damage.