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 2-284 Change 1 STARTER CIRCUIT E1 IS BATTERY VOLTAGE AT LEAST 20 VOLTS? ENGINE WON'T CRANK BATTERY STARTER PCB/DISTRIBUTION BOX ROTARY SWITCH NEUTRAL SAFETY SWITCH WIRING/CABLES LOCKED ENGINE 1. STE/ICE-R TEST 67 (Page 2-740) 2. MULTIMETER Low battery voltage can prevent cranking. REPLACE BATTERIES STARTER PCB/DISTRIBUTION BOX ROTARY SWITCH NEUTRAL SAFETY SWITCH WIRING/CABLES LOCKED ENGINE E2 DO YOU HAVE BATTERY VOLTAGE AT STARTER MOTOR (WIRE 6A)? 1. STE/ICE-R TEST 68 (Page 2-741) 2. MULTIMETER Must have voltage available at starter to crank. BATTERY SHOULD AT LEAST CRANK ENGINE SLOWLY. GO TO F, Page 2-288 E3 WITH ROTARY SWITCH IN “START” POSITION, DO YOU HAVE BATTERY VOLTAGE AT SOLENOID SWITCH TERMINAL (74A)? 1. STE/ICE-R TEST 70 (Page 2-743) 2. MULTIMETER VOLTAGE AVAILABLE AT STARTER BATTERY STARTER PCB/DISTRIBUTION BOX ROTARY SWITCH NEUTRAL SAFETY SWITCH WIRING/CABLES LOCKED ENGINE Must have voltage at switch terminal to energize solenoid. GO TO G, Page 2-290 E FROM A1, Page 2-268 GO TO E4, Page 2-286 DIAGNOSTIC FLOWCHART