Lincoln 7L1Z-4R602-A Drive Shaft Assembly

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Driveshafts have a "slip yoke" at the front end that inserts into the extension housing of the transmission or transfer case. On two-piece rear driveshafts, a center bearing supports the driveline. The rear end of all rear driveshafts connects to the rear axle's differential pinion flange using a flange yoke with four bolts. Front driveshafts on 4WD models may have a slip yoke at either the front or rear end, depending on the vehicle type.

To install, follow the reverse procedure, ensuring proper alignment of the marks made during removal. Tighten all bolts securely. For two-piece driveshafts, check the center bearing during reinstallation.

To prepare the vehicle, begin by turning off the air suspension system if equipped. Next, securely raise the vehicle on jackstands, place the transmission in Neutral with the parking brake off, and block the front wheels to prevent any rolling.

Driveshaft assemblies require minimal service. Universal joints are usually lubricated for life and should be replaced if problems arise. During service, the driveshaft should be removed from the vehicle. It's important to keep the driveshaft clean, inspect it for obvious damage, and ensure that small weights used for balancing are in place and securely attached. When reinstalling the driveshaft, it must be returned to the same relative position to preserve balance.