TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
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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 STARTER CIRCUIT 2-266 Change 1 FROM 4, Page 2-264 5 DOES THE STARTER STOP CRANKING WHEN THE ROTARY SWITCH IS RETURNED TO THE “RUN” OR “STOP” POSITIONS? LISTEN CRANKS OK ROTARY SWITCH STARTER PCB/DISTRIBUTION BOX The starter solenoid could be stuck or, more likely there may be a short to the solenoid. GO TO C, Page 2-276 6 IS THE AVERAGE STARTER CURRENT BETWEEN 200 & 300 AMPS? 1. STE/ICE-R TEST 71 (Page 2-744) 2. MULTIMETER This will tell if the starter is OK and if the batteries have enough power to crank the engine. ROTARY SWITCH OK ENGINE NOT LOCKED PCB/DISTRIBUTION BOX OK BATTERIES STARTER/SOLENOID GO TO D, Page 2-282 7 IS THE BATTERY VOLTAGE AT LEAST 18.5 VOLTS WHILE CRANKING? ROTARY SWITCH OK ENGINE NOT LOCKED STARTER OK BATTERIES A good cranking voltage, combined with a good starter current shows that the batteries are OK. GO TO BATTERY TESTS, Page 2-252 NO FAULTS FOUND 1. STE/ICE-R TEST 67 (Page 2-740) 2. MULTIMETER DIAGNOSTIC FLOWCHART