TB-9-2510-251-13 HMMWV Operator and Field Maintenance, Installation & Parts Add-On-Armor Air Conditioning Download
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4-21 TB 9-2510-251-13 4-12 Receiver/Drier and Accumulator The receiver-drier and accumulator cannot be serviced or repaired. They should be replaced whenever the AC system is opened for any service. If the receiver-drier or acculator has a pressure switch to control the clutch, it should be removed and installed on the new unit. 4-13 Compressor and Clutch Problems with the clutch assembly can be due to low voltage, electrical failure in the coil, the lead wire, or a bad pulley bearing. Check first to see that electrical power is reaching the clutch. The lead wire and bearing can be replaced and the clutch assembly reinstalled. If the coil fails, it must be replaced. If the clutch shows obvious signs of excessive heat, replace the complete assembly. The compressor can fail due to shaft seal leaks, defective valve plates, bad bearings, or problems associated with high pressure, heat, or lack of lubrication.