OEM Mercury Grand Marquis Differential Cover

Mercury Grand Marquis Differential Cover Parts Questions & Experts Answers

• Differential Cover, Front
  2L1Z-4033-CA
  Q: How to service and repair the Differential Cover on Mercury Grand Marquis?

  A: The differential housing service requires first switching off the Air Suspension switch found at the left luggage compartment for preventing airborne air spring changes. The vehicle contains a fire suppression system that needs depowering before service. Position the vehicle at neutral gear and place it on a hoisting system. Start by unboltting the differential housing cover and drain the lubricant from its chamber before taking out the cover. First clean the machined areas of both differential housing and cover until they show no traces of oil because contaminations should remain inside the rear axle during installation. Use a continuous application of silicone gasket and sealer on the differential housing cover followed by immediate installation within a 15-minute timeframe because new sealant might be required. Filling the axle with lubricant should occur after at least one hour of curing silicone sealant when possible. The differential cover should get positioned correctly along with the axle guard installation if used then bolt tightness should reach 45 Nm (33 ft. lbs.) in a star pattern. You should insert 118 ml (4 ounces) of friction modifier into the rear axle through the fill plug after cleaning the tool recess for proper insertion. Locate 2.37 liters (5.0 pints) of lubricant to fill the rear axle after installing the fill plug which needs to be tightened to 30 Nm (22 ft. lbs.). The system must be repowered while the vehicle requires air suspension users to reactivate the system before performing a descent.