AIR CONDITIONER EXPANSION VALVE REPLACEMENT - CONTINUED
REMOVAL - CONTINUED
Remove expansion valve (3).
Remove plugs from refrigerant lines (4), evaporator coil inlet and outlet lines (5), and expansion valve (3).
Install new preformed packings and lubricate with refrigerant oil.
Apply loctite to male fitting threads and connect refrigerant lines (4) and evaporator coil inlet and outlet lines (5) to
expansion valve (3).
DO NOT connect refrigerant fittings using only one wrench. Hold one fitting in place using a wrench and
turn other fitting with a second wrench.
Using wrenches, tighten evaporator coil lines (5) to 216 lb-in (25 Nm).
Tighten refrigerant lines (4): tighten large hose to compressor to 24 lb-ft (33 Nm); tighten small hose from receiver-drier
to 144 lb-in (16 Nm).
Any time air conditioning system refrigerant is evacuated, replace receiver-drier.
Replace receiver-drier (WP 0118 00).
Evacuate and charge system with refrigerant (WP 0112 00).
Add refrigerant oil to compressor to replace that which was lost during system discharge (WP 0116 00).
Use care to prevent refrigerant from touching your skin or eyes. Liquid refrigerant, when exposed to air,
quickly evaporates and will freeze skin or eye tissue. Serious injury or blindness may result if you come in
contact with liquid refrigerant.
Leak test air conditioner system (TM 9-2320-302-20).