Stator (Load Test)
- This test is performed with diodes unsoldered from stator leads. Use a voltmeter, ammeter, a variable load control and a fully charged 12 volt battery to test stator (see illustration). Connect negative lead to any stator lead and connect positive lead to load control. Connect remaining load control lead to either of the remaining two stator leads. Connect voltmeter to stator leads and adjust load to draw 20 amperes. Allow windings to heat up for approximately 15 seconds and note voltmeter reading. On 35 or 37 amp. alternators, reading should not exceed 4.2 volts (1971-73) or 8.2 volts (1974). On 51 or 55 amp. alternators, reading should not exceed 7.7 volts (1971-73) or 6.5 volts (1974).
- Reduce amperage draw to zero, disconnect voltmeter and load control test leads from stator and connect to other remaining stator lead. Apply 20 ampere draw and note voltmeter reading. Variance between each winding must not exceed 0.7 volt (35 or 37 amp. alternators) or 0.6 volt (51 or 55 amp. alternators).
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