OEM Mercury Grand Marquis Drive Shaft

Mercury Grand Marquis Drive Shaft Parts and Q&A

• Drive Shaft, Rear
  F8AZ4602BA
  Q: How to Service and Repair the Drive Shaft on Mercury Grand Marquis?

  A:

  The service and repair of drive/propeller shaft begins with vehicle lifting and its support. First mark the index points between the rear axle pinion flange and the driveshaft centering socket yoke then uninstall the four bolts. Operators need to exercise extra caution when working with driveshaft centering socket yoke because the design requires it to fit tightly with the rear axle pinion flange pilot; striking driveshaft parts should be strictly avoided. A proper tool should only be used for prying in the specified area to detach the yoke from the flange. After moving the rear end of the driveshaft downward for axle housing clearance the technician should draw the driveshaft toward the rear until the slip yoke creates sufficient distance from transmission extension housing. Mark the driveshaft slip-yoke alignment with both the transmission output shaft and then plug the extension housing to avoid fluid drainage. New bolts should be used for installation or existing bolts require a coating of Threadlock and Sealer EOAZ-V554-AA that fulfills Ford standard WSK-M2G351-A5. Stretch the driveshaft centering socket yoke until it perfectly fits onto the flange through a cross bolt tightening method. Check for damage on the extension housing seal then replace it with a new one if necessary. Smooth the slip-yoke splice with Premium Long-Life Grease XG-1-C or another product that satisfies Ford specification ESA-MlC75-B. The installation of a new driveshaft requires alignment of the yellow paint marks on both the driveshaft tube rear and the pinion flange rear. If no paint marks are visible then you should perform driveshaft indexing. The installation process concludes by performing the steps in reverse order of disassembly.