Front

The front driveshaft connects the power flow from the transfer case to the front drive axle. It incorporates two single cardan universal joint (U-joint) assemblies, a driveshaft with a splined stub shaft end, a boot with two clamps (one large and one small), and a slip yoke which attaches to the transfer case.

NOTE: Whenever the vehicle is raised on a hoist, inspect the rubber boot for rips or tears. Replace if required.

CAUTION: Under no circumstances are aluminum driveshafts to be clamped In the jaws of a vise or similar holding fixture. Denting or localized fracture of the tube may result which could cause driveshaft failure during vehicle operation.

FIG. 1 Front Driveshaft - F-150-350 4x4/Bronco 4x4:

FIG. 2 Front Driveshaft-F-350 (4x4):

The front driveshaft connects the power flow from the transfer case to the front drive axle. It incorporates two single cardan universal joint (U-joint) assemblies, (one double cardan on F-350), a driveshaft with a splined stub shaft end, and a boot with two clamps (one large and one small) (Figs. 1 and 2). The F-150, F-250, and Bronco driveshafts must have a length of 35.10 inches (892mm) for C6 and M5HD(ZF) transmissions, 36.10 inches (917mm) for AOD transmissions, and 38.50 inches (978mm) for M5OD(R2) transmissions, from the centerline of the U-joint in the front yoke to the centerline of the U-joint in the rear yoke when in its free state. For F-350 models, the driveshaft must have a length of 819mm (32.25 inches) for C6 transmissions, 970mm (38.19 inches) for E4OD transmissions, 832mm (32.75 inches) for M5HD(ZF) transmissions on 7.5L/ 7.3L, and 905.8mm (35.66 inches) for M5HD(ZF) transmissions on 5.8L, from the centerline of the front U-joint to centerline of rear U-joint when in its fully compressed (shortest) state.

NOTE: Whenever the vehicle is raised on a hoist, inspect the rubber boot for rips or tears. Replace if required.

All front driveshaft assemblies are balanced. If the vehicle is to be undercoated, cover the driveshaft and U-joints to prevent application of any undercoating material.