OEM Lincoln Mark LT Brake Booster

Lincoln Mark LT Brake Booster Parts Questions & Experts Answers

• Brake Booster
  8L3Z-2005-B
  Q: How to service and repair the vacuum brake booster on Lincoln Mark LT?

  A: The first step to repair or service the vacuum brake booster requires disconnecting the electrical connector of the brake fluid level warning switch. All 4.6L engine vehicles require their brake booster vacuum hose to flow over the exhaust gas recirculation (EGR) valve to avoid damage while you disconnect the vacuum hose from the brake booster vacuum fitting. The service requires removing and setting aside the master cylinder after detaching its two mounting nuts which should be tightened to 25 Nm (18 lb-ft) during reinstallation. It is essential to remove the stop lamp switch and speed control deactivator switch after compressing their plungers while the brake pedal remains at rest in order to protect them from damage. You should start by removing the speed control deactivator switch before untightening the redundant self-locking pin cover and the self-locking pin. Position the stop lamp switch and booster rod along with the bushing in a different space from the brake pedal pin before removing the four brake booster nuts that require tightening to 25 Nm (18 lb-ft) when reinstalling. The installation of stop lamp switches and speed control deactivator switches requires a brake pedal at rest position while the push rod from the booster is attached to prevent any damage and allow correct adjustment. The complete installation process will begin by reversing all previous disassembly measures.