TM-9-2320-280-10 HMMWV Operator Manual Download
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TM 9-2320-280-10 Change 1 3-5 MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Table 3-1. Troubleshooting (Cont’d) HEATING SYSTEM 9. HOT WATER PERSONNEL HEATER FAILS TO PRODUCE HEAT AFTER ENGINE REACHES OPERATING TEMPERATURE Step 1. Check operating controls for correct settings. Step 2. Other causes. Notify unit maintenance. TRANSMISSION 10. NO RESPONSE TO SHIFT LEVER MOVEMENT Step 1. Check to see if transfer case lever is in “N” (neutral) or “P” (Park) for M1123 and A2 vehicles. Place transmission shift lever in “N” (neutral) or “P” (Park) and select transfer gear range. Step 2. Other causes. Notify unit maintenance. 11. ROUGH SHIFTING All causes. Notify unit maintenance. 12. FLUID THROWN FROM TRANSMISSION FILL TUBE Step 1. Check to see if transmission dipstick is loose. Secure dipstick. Step 2. Check fluid level for overfilling (para. 3-19). Notify unit maintenance if fluid level is high. Step 3. Other causes. Notify unit maintenance. 13. SLIPPAGE IN ALL RANGES Step 1. Check for low fluid level (para. 3-19). Add fluid (Appendix G). Step 2. Other causes. Notify unit maintenance. TRANSFER CASE 14. TRANSFER CASE SHIFT LEVER WILL NOT SHIFT Step 1. Check for proper shifting sequence. Ensure proper shifting sequence is used (para. 2-11). Step 2. Other causes. Notify unit maintenance.