Section 03-00: Engine, Service
1996 All F-150, F-250, F-350, F-Super Duty and Bronco Vehicles Equipped with 4.9L, 5.0L, 5.8L or 7.5L Gasoline Engines, and 7.3L Diesel Engines Workshop Manual
SERVICE PROCEDURES

Crankshaft End Play

 

After a thrust bearing is replaced, it must be aligned as follows. If not replaced, go to Step 5.

  1. Seat the bearings by torquing main caps to specification. Refer to Section 03-01A (4.9L SFI), Section 03-01B (5.0L and 5.8L MFI), Section 03-01C (7.5L MFI) or Section 03-01D (7.3L diesel) for engine main bearing cap torque specifications.

  1. Loosen thrust bearing cap fasteners to relieve clamp load, but do not disengage cap and fasteners.

  1. Firmly pound rear of crank forward with a plastic hammer to push thrust flanges forward.

  1. Retorque thrust bearing cap fasteners to specifications. Refer to appropriate engine section.

  1. Force crankshaft to rear of engine (6007) as shown.

  1. Install Dial Indicator with Bracketry TOOL-4201-C or equivalent so contact point rests against crankshaft flange and indicator axis is parallel to crankshaft axis.

  1. Zero dial indicator. Push crankshaft (6303) forward and note reading on dial.

  1. If the end play exceeds the wear limit listed in the specific engine section, replace the thrust bearing. Inspect the crankshaft for damage to the thrust face before installing the new bearing. If the end play is less than the minimum limit, inspect the thrust bearing faces for scratches, burrs, nicks, or dirt. If the thrust faces are not damaged or dirty, they probably were not aligned properly. Lubricate and install the thrust bearing and align the faces, following Main Bearing Replacement procedure in the appropriate engine section. Check the crankshaft end play.