There are 4 different types of alternators found on the years and model ranges covered in this information:
Rear Terminal, External Regulator, External Fan Alternator
- Rear Terminal, External Regulator, External Fan Alternator
- Side Terminal, Internal Regulator, External Fan Alternator
- Leece-Neville 165 Ampere Alternator
- Integral Rear Mount Regulator, Internal Fan Alternator
This unit utilizes a separate, external electronic regulator. The regulator is non-adjustable. The rear terminal alternator was standard equipment on 1987 trucks, and can be found on some 1992 motor home chassis models equipped with the 7.3L diesel or 7.5L gasoline engine.Side Terminal, Internal Regulator, External Fan Alternator
This unit was optional on 1987, standard on all 1988-92 models and standard on 1993-96 models equipped with the 4.9L and 7.5L engines. The regulator in integrated within the alternator body and is not adjustable.Integral Rear Mount Regulator, Internal Fan Alternator
This alternator is standard equipment on all 1993-96 models equipped with 5.0L, 5.8L gasoline engines and 7.3L diesel engines (except the 1996 F-Super Duty models).Leece-Neville 165 Ampere Alternator
This unit is optional equipment on some 1989-94 trucks and ambulance packages. A separate, electronic, fully adjustable regulator is employed in this system.Mitsubishi 215 Ampere Alternator
This unit is found on 1996 F-Super Duty models equipped with the 7.3L diesel engine. The regulator is integral and the fan is external.
REMOVAL & INSTALLATION
See Figures 1, 2, 3 and 4
Fig. Fig. 1: Disengage all wiring harness connections from the alternator
Fig. Fig. 2: Once it is unbolted, maneuver the alternator from the engine compartment
Fig. Fig. 3: Side terminal alternator
Fig. Fig. 4: Rear terminal alternator
Some engines are equipped with a ribbed, K-section belt and automatic tensioner. A suitable tool must be made to remove the tension from the tensioner arm. Loosen the idler pulley pivot and adjuster bolts before using the tool..
- Disconnect the battery ground cable.
- Remove the adjusting arm bolt.
- Remove the alternator through-bolt. Remove the drive belt from the alternator pulley and lower the alternator.
- Label all of the leads to the alternator so that you can install them correctly and disconnect the leads from the alternator.
- Remove the alternator from the vehicle.
- To install, reverse the above procedure. Observe the following torques:
Pivot bolt: 58 ft. lbs. (78 Nm)
Adjusting bolt: 25 ft. lbs. (34 Nm)
Wire terminal nuts: 60-90 inch lbs. (6.8-10.1 Nm)