TB-9-2510-251-13 HMMWV Operator and Field Maintenance, Installation & Parts Add-On-Armor Air Conditioning Download
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4-11 TB 9-2510-251-13 Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) for Air Conditioning Kit Item No. Interval Location Item To Check/ Service Procedure Not Fully Mission Capable If: AIR CONDITIONER UNIT 1 Monthly Compressor: Check for excessive noise Excessive noise present. Check clutch pulley for excessive Clutch pulley worn or wear and serviceability. fails to turn compressor shaft. Run air conditioning system for Air from ducts is less 5 minutes. than 20° below ambient temperature. Check belts for tension. Belts worn or loose. More than 120 lbs tension. 2 Monthly Condenser: Clean debris from coils. Check inlet/outlet for obstructions 50% or greater or damage. obstruction. Inlet/outlet damaged. 3 Compressor: Inspect shaft seal for leakage. Seal leaking or damaged. Inspect and tighten mounting Brackets or mounting brackets and bolts. bolts damaged or missing. Check clutch to crankshaft drive Not aligned. pulley alignment. 4 Semi- Inspect all fittings/clamps/hoses Damaged or missing. Annual for damage or wear. 5 Semi- Check fan clutch for proper Does not engage when Annual operation. unit is turned on. 6 Semi- Inspect all wiring and connectors Excessive damage or Annual for excessive damage or failure failure to connect. to connect. Semi- Annual 4-11/(4-12 Blank)