TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 312 of 890
TM 9-2320-280-20-1 REFERENCE INFORMATION ALTERNATOR Change 1 2-224.3 NOTE The regulator for this alternator has overvoltage protection. Any output voltage over 30.5 volts is an overvoltage. 1. Start test 10, Engine RPM. 2. Crank or start the engine. Displayed reading is RPM. Engine RPM should be 1200-1500. ENGINE RPM STE/ICE-R TEST 10 Output voltage of 26-30.5 is acceptable for this alternator. NOTE For 60 amp Prestolite alternator, go to B, page 2-204. For 100 amp Prestolite alternator, go to C, page 2-208. For 200 amp Prestolite alternator, go to D, page 2-212. For 200 amp single voltage Niehoff alternator, go to E, page 2-218. For 100 amp single voltage Niehoff alternator, go to F, page 2-222. For 100 amp dual voltage Niehoff alternator, continue with F.1. For 200 amp dual voltage Niehoff alternator, go to G, page 2-224.6. For 400 amp dual voltage Niehoff alternator, go to H, page 2-224.10. NOTE The regulator for this model alternator has overvoltage protection. Any output voltage over 30.5 volts is an overvoltage. Output voltage of 26-30.5 is acceptable for this alternator. 1. Connect probe. 2. Start Test 90, DC amps. 3. Displayed reading is in amps. 0-1,500 AMPS DC STE/ICE-R TEST 90