TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download

TM 9-2320-280-20-1 KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION NO YES NO YES NO YES ALTERNATOR 2-202 Change 1 A FROM 3, Page 2-196 A1 IS THE STARTER MOTOR VOLTAGE THE SAME AS BATTERY VOLTAGE? 1. STE/ICE-R TESTS 67, 68 (Pages 2-740 -741) 2. MULTIMETER The cable connecting the batteries to the alternator goes to the starter first. REPAIR/REPLACE WIRE 6A BATTERY IS NOT CON- NECTED TO ALTERNATOR WHEN ROTARY SWITCH IS IN RUN POSITION PCB/DISTRIBUTION BOX WIRING BATTERY IS NOT CON- NECTED TO ALTERNATOR WHEN ROTARY SWITCH IS IN RUN POSITION, BATTERIES CONNECTED TO STARTER PCB/DISTRIBUTION BOX WIRING A2 DISCONNECT THE BATTERY NEGATIVE CABLE. DISCONNECT ENGINE CONNECTOR AT PCB/DISTRIBUTION BOX. RECONNECT THE BATTERY NEGATIVE CABLE. IS THERE BATTERY VOLTAGE AT SOCKET E OF THE PCB/DISTRIBUTION BOX ENGINE CONNECTOR HARNESS ? 1. STE/ICE-R TESTS 67, 89 (Pages 2-740, -750) 2. MULTIMETER This checks the wire from the starter to the PCB/distribution box engine connector. REPAIR/REPLACE WIRE 81A BATTERY IS NOT CON- NECTED TO ALTERNATOR WHEN ROTARY SWITCH IS IN RUN POSITION, BATTERIES CONNECTED TO STARTER PCB/DISTRIBUTION BOX WIRING A3 REMOVE THE BATTERY NEGATIVE CABLE. IS THERE CONTINUITY (LESS THAN 20 OHMS RESISTANCE) FROM SOCKET F OF PCB/DISTRIBUTION BOX ENGINE CONNECTOR HARNESS TO WIRE 5A END AT ALTERNATOR? 1. STE/ICE-R TEST 91 (Page 2-752) 2. MULTIMETER If the box is connected to the alternator, then the relay in the PCB/distribution box is no good. SEE NOTE ON RIGHT HAND PAGE REPLACE PCB/DISTRIBUTION BOX DIAGNOSTIC FLOWCHART