TB-9-2510-251-13 HMMWV Operator and Field Maintenance, Installation & Parts Add-On-Armor Air Conditioning Download
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4-17 TB 9-2510-251-13 UNIT TROUBLESHOOTING (Cont’d) 4. EXPANSION VALVE STUCK CLOSED OR PLUGGED Step 1. Does gauge read as shown? If yes, disconnect inlet hose fitting from the expansion valve and clean the screen. If no, expansion valve is stuck closed. Step 1. Is frost present on suction line of compressor? If yes, replace expansion valve. If no, go to compressor trouble shooting. 5. EXPANSION VALVE STUCK OPEN