Ford 4L1Z-4602-BA Drive Shaft Assembly

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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.

Mark the relationship between the driveshaft and the differential pinion flange. Remove the rear universal joint bolts. If applicable, remove the center bearing support bracket bolts on two-piece driveshafts. Lower the rear driveshaft. Slide out the slip yoke from the transmission or transfer case. Remove the driveshaft assembly while protecting the extension housing with a plastic bag. While the driveshaft is removed, inspect and replace the extension housing seal and differential pinion seal if necessary.