Driveline Angle Correction

Coupling Shaft Angle Adjustment

Check coupling shaft angle (if so equipped) and adjust to specification by shimming the driveshaft center bearing support (4800).

Driveshaft and Pinion Angle Adjustment

Check the driveshaft angle and adjust to specifications by shimming between the rear springs (5560) and the rear axle spring seats.

Adjust the pinion angle by placing tapered shims between the rear springs and spring seats. On F-150, a 63.5mm (2-1/2 inch) wide shim (Part No. C3TZ-5A313-A or equivalent) is available for a 2-degree change. On Bronco, a 63.5mm (2-1/2 inch) wide shim (Part No. C3TZ-5A313-E or equivalent) is available for a 3-degree change. On F-250, F-350 and F-Super Duty Chassis Cab, a 76.2mm (3 inches) wide shim (Part No. C6TZ-5A313-B or equivalent) is available for a 3-degree change. For F-Super Duty Motorhome, a 101.1mm (4 inches) wide shim is required.

Engine Angle Adjustments

The engine angle is adjusted by normalizing the engine mounts. The engine mounts are normalized by loosening the engine mount nuts to frame. Raise the driveshaft (4602) off the frame, then lower the driveshaft and let it settle into place. Service any damaged mounts at this time. Tighten all fasteners to the specified torque. Recheck the engine angle. If the angle is still out of specification, place shims under the transmission-to-rear crossmember mount until the specified angle is obtained.