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 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 2-276 Change 1 STARTER CIRCUIT C FROM 5, Page 2-266 C1 DISCONNECT NEGATIVE BATTERY CABLE TO STOP CRANKING. ENGINE WON'T STOP CRANKING ROTARY SWITCH PCB/DISTRIBUTION BOX WIRING STARTER C2 DISCONNECT WIRES AT ROTARY SWITCH. WITH SWITCH IN “OFF” POSITION, DO YOU GET: OPEN CIRCUIT FROM B TO S? OPEN CIRCUIT FROM B TO R? OPEN CIRCUIT FROM R TO S? 1. STE/ICE-R TEST 91 (Page 2-752) 2. MULTIMETER REPLACE SWITCH C3 WITH ROTARY SWITCH IN “RUN” POSITION, DO YOU GET: OPEN CIRCUIT FROM B TO S? OPEN CIRCUIT FROM R TO S? SHORT CIRCUIT FROM B TO R? 1. STE/ICE-R TEST 91 (Page 2-752) 2. MULTIMETER A good switch has these opens and shorts. REPLACE SWITCH GO TO C4, Page 2-278 ENGINE WON'T STOP CRANKING ROTARY SWITCH PCB/DISTRIBUTION BOX WIRING STARTER ROTARY SWITCH PCB/DISTRIBUTION BOX WIRING STARTER ENGINE WON'T STOP CRANKING No matter what's wrong, the starter can't crank without battery power. A good switch exhibits these open circuits in the “OFF” position. DIAGNOSTIC FLOWCHART