OEM 2009 Lincoln Navigator Brake Booster

2009 Lincoln Navigator Brake Booster Parts Q&A

• Q: How to service and repair the vacuum brake booster on 2009 Lincoln Navigator?

  A: The service and repair process for the vacuum brake booster begins with removing the air cleaner element along with degas bottle/lower air cleaner housing assembly bolts before storing them aside while tightening bolts to 15 Nm (133 lb-in) for reinstallation. The brake booster vacuum should be released through five pedal pressing cycles before engine shutdown. You should disconnect the brake fluid level switch after installing mechanic's wire to support the master cylinder, but only remove the two brake master cylinder nuts before placing the master cylinder aside while tightening these nuts to 25 Nm (18 lb-ft). Remove the electrical connector which controls the brake pedal travel solenoid on all vehicles that come with Roll Stability Control (RSC(R)). Proceed with disconnecting the following elements: brake pedal travel sensor electrical connector as well as the manifold vacuum outlet assembly from the brake booster. When removing the stoplamp switch, it must be accomplished with the brake pedal in resting position so the switch plunger stays compressed because damage to hardware will result. Meticulously remove the stoplamp switch before proceeding to separate the brake pedal arm pin and disconnecting the booster push rod from the brake pedal arm. Users can remove the four brake booster-to-pedal bracket nuts by accessing the hidden locations after folding back the sound insulation then should remove the brake booster while using 27 Nm (20 lb-ft) torque when reinstalling the nuts. The correct installation of the stoplamp switch requires positioning of the brake pedal at rest since an incorrect placement could damage the hardware. Vehicles equipped with Roll Stability Control (RSC(R)) require customers to use a scan tool for ABS module calibration according to its instructions.