OEM Mercury Grand Marquis Differential Cover

Mercury Grand Marquis Differential Cover Parts and Q&A

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

  A:

  Users should start servicing and repairing the differential housing cover only after disabling electrical power to the Air Suspension system through the left-hand luggage compartment air suspension switch. Support the vehicle while lifting it. Use a wrench to access the differential housing cover by removing its bolts then collect the lubricant fluid which exists inside the differential housing. Maintenance personnel need to clean both the installed surfaces on the differential housing and the cover and provide protection inside the rear axle during this process to stop oil from contaminating them. Install the differential housing cover within a time span of 15 minutes after silicone application because installation after 15 minutes will result in needing fresh sealant. Sufficient curing time of one hour should be provided to silicone sealant before conducting the axle lubrication process. Place the differential housing cover correctly before installing and tightening all bolts starting from the center outwards like a star pattern. To fill a Traction-Lok axle with lubricant you must add 118 ml (4 oz) of additive friction modifier at first. Clean the tool recess on the fill plug before removal to allow an complete tool connection. To complete the lubrication procedure you should install the fill plug after adding 2.37 liters (5.0 pints) of lubricating fluid to the rear axle. Reactivate the air suspension system before lowering the vehicle when it exists on the vehicle platform.