10-21. AIR CONDITIONING SYSTEM SERVICING (M1010) (Cont)

10-21. AIR CONDITIONING SYSTEM SERVICING (M1010).

/.25ton/TM-9-2320-289-34 CUCV Series Trucks at intermediate direct support and general support level Manual
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TM 9-2320-289-34 10-21. AIR CONDITIONING SYSTEM SERVICING (M1010) (Con’t). 1 . 2 . 3 . 4 . 5 . NOTE Ensure that DISCHARGING SYSTEM is performed to remove all contamination and refrigerant from air conditioning system before performing EVACUATING SYSTEM. Completely close low side valve (1) and high side valve (4) on manifold gage set. Remove protective caps from low pressure line (8) valve and high pressure line (9) valve. Connect low pressure hose (7) to low pressure line valve and high pressure hose (5) to high pressure line valve. Wrap end of center hose (6) with a clean rag. Slowly open high side valve (4). Observe center hose (6) for evidence of refrigerant oil in rag. Adjust high side valve toward closed position to prevent refrigerant oil from escaping while discharging system. When high side gage (3) reads 50 psi (345 kPa), slowly open low side valve (1). Refrigerant should flow at an even rate from both sides of system. When both gages reach “O, ” completely close low side valve (1) and high side valve (4) on manifold gage set. TA50447 1 0 - 8 0

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