TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 290 of 890
TM 9-2320-280-20-1 REFERENCE INFORMATION ALTERNATOR Change 1 2-207 1. Turn engine off. 2. Remove protective cover from alternator wiring. 3. Remove the potting material. 4. Remove hex head plug to expose adjustment screw. 5. Start engine and lock throttle at 1200-1500 RPM by using STE/ICE-R test 10. 6. Connect the Red test lead to wire 5A and the Black lead to engine ground. 7. Monitor alternator output voltage with STE/ICE-R test 89. 8. Use a cross tip screwdriver to adjust the alternator output voltage 28.0 ± 0.5 Volts. 9. Unlock throttle, replace hex head plug, repot the area with silicon caulk, and replace the protective cover. ENGINE RPM STE/ICE-R TEST 10 1. Start Test 10, Engine RPM. 2. Crank or start the engine. Displayed reading is RPM. Cranking RPM should be approximately 100. Idle RPM should be 625-675. 0-45 DC VOLTS STE/ICE-R TEST 89 1. Connect RED clip to the indicated test point, BLACK clip to negative or ground. 2. Start Test 89, DC volts. 3. Displayed reading is in volts. NOTE Regulator cannot be tested independently from alternator on 60 amp alternator system. WIRE 2A