TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 310 of 1205
TM 9-2320-387-24-l STARTER CIRCUIT KNOWN INFO ENGINE DOESN7 CRANK AT 200 RPM POSSIBLE PROBLEMS BATTERIES STARTER NEUTRAL SAFETY SWITCH CABLESWIRING ENGINE MECHANICAL ROTARY SWITCH PCB KNOWN INFO ENGINE CRANKS SLOWL’ POSSIBLE PROBLEMS BATTERIES STARTER ENGINE MECHANICAL CABLES/CONNECTIONS KNOWN INFO BATTERY VOLTS OK STARTER OK POSSIBLE PROBLEMS WEAK BATTERIES ENGINE MECHANICAL CABLES/CONNECTORS STARTER DOES THE ENGINE CRANK AT ALL? DIAGNOSTIC FLOWCHART - r OPTTONS LISTEN. REASON FOR QUESTION If the engine cranks, then the rotary switch, neutral safety switch and PCB are all working. IS THE BATTERY VOLTAGE 23-25 VOLTS? r OPTIONS 1. STEIICE-R TEST 67 (Page 2496) 2. MULTIMETER REASON FOR QUESTION If batteries are weak, they can’t provide enough current to crank the engine property. OR CHECK EACH IS THE BAlTERY VOLTAGE AT LEAST 18.5 VOLTS DURING CRANKING? . ;T OPTIONS 1. STWCE-R TEST 67 (Page 2496 2. MULTIMETER REASON FOR QUESTION Batteries must be able to maintain voltage or the engine won’t crank. 1 1 2-254 -