Alternator - No or Low Output
86ford16Article No. 86-11-4
ALTERNATOR - NO OR LOW OUTPUT
FORD 1985-86 ALL CAR LINES
LINCOLN-MERCURY 1985-86 ALL CAR LINES
LIGHT TRUCK 1985-86 ALL LIGHT TRUCK LINES
This article applies to all cars and light trucks built from July 1, 1985 through February 28,1986, with a 40, 60, 65 or 75 amp alternator. Charging system concerns that are diagnosed as "low or no alternator output" as defined in the Shop Manual, Section 31-01, "Charging System Test with Load" may be caused by an open stator neutral terminal connection. This condition can be corrected by installing a new stator.
Figure 4:
The stator neutral terminal (refer to Figure 4), is the common connection of the three stator windings. The terminal crimp may relax under thermal cycling and eventually begin to arc until it opens circuits. Once the terminal arcs open, there is no alternator output.
NOTE: Alternators manufactured after February 10, 1986 have an improved stator terminal connection.
Disassemble the alternator and inspect the stator neutral terminal for signs of overheating and/or arcing. Confirm by performing the "Stator Coil Open Test" described in Section 31-17 of the Shop Manual. Replace the stator with the appropriate service replacement stator. Do not replace the entire alternator assembly. Do not attempt to repair the stator connection.
See applicable parts list in Master Catalog.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION and TIME: Refer to the Labor Time Standards Manual.
DLR. CODING: Basic Part No. 10336 - Code: 46