TM-9-2320-366-20-2 MTV Unit Maintenance Manual M1083 Series - Volume 2 Download
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KNOWN INFO TEST OPTIONS REASON FOR QUESTION WARNING Read WARNING on following page. Voltage Test or STE/ICE-R Test #89 8. Is the alternator output within normal voltage range for both 12 VDC and 24 VDC terminal studs with a known good voltage regulator? e92. ELECTRICAL SYSTEM DOES NOT MAINTAIN A CHARGE (CONT) 2-1056.8 Change 1 TM 9-2320-366-20-2 YES NO Replace 100 AMP alternator (para 7-2) or 200 AMP alternator (para 20-45). Replace 100 AMP voltage regulator (para 7-5) or 200 AMP voltage regulator (para 20-46). With a known good voltage regulator installed; if the voltage regulator output is not within normal range, the alternator is faulty. If the voltage regulator output is within normal range, the previous voltage regulator is faulty. Engine oil pressure indicator light illuminates. OIL PRESS gage operates. Engine starts. Alternator belts OK. Battery(ies) OK. Engine oil pressure switch OK. Relay K11 OK. Dashboard cable assembly OK. Engine control cable assembly OK. Alternator ground strap OK. 100 AMP alternator to reverse polarity relay 12 VDC cable OK. 200 AMP alternator to terminal block 12 VDC cable OK. 100 AMP alternator to reverse polarity relay 24 VDC cable OK. 200 AMP alternator to terminal block 24 VDC cable OK. POSSIBLE PROBLEMS Faulty alternator. Faulty voltage regulator.