Expansion Valve: Service and Repair
REMOVAL1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
HINT: At the time of installation, please refer to the following item.
Evacuate air from refrigeration system, Charge system with refrigerant and inspect for leakage of refrigerant.
Specified amount: 850 ± 50 g (29.98 ± 1.76 oz.)
2. REMOVE BLOWER UNIT
3. DISCONNECT LIQUID AND SUCTION TUBES
Remove the 2 bolts and disconnect the both tubes.
Torque: 10 Nm (100 kgf.cm, 7 ft.lbf)
NOTE: Cap the open fittings immediately to keep moisture or dirt out of the system.
HINT: At the time of installation, please refer to the following item.
Lubricate 2 new O-rings with compressor oil and install them to the tubes.
4. REMOVE EVAPORATOR
a. Remove the screw and pull out the evaporator temp. sensor.
b. Remove the 5 screws and evaporator cover.
c. Pull out the evaporator.
HINT: At the time of installation, please refer to the following item.
If evaporator is replaced, add compressor oil to the evaporator.
Add 40 cc (1.4 fl.oz.)
Compressor oil: ND-OIL 8 or equivalent
DISASSEMBLY
REMOVE EXPANSION VALVE
Using a hexagon wrench, remove the 2 bolts and separate the expansion valve and evaporator and tubes.
Torque: 5.4 Nm (55 kgf.cm, 48 in.lbf)
HINT: Lubricate 4 new O-rings with compressor oil and install them to the tubes and valve.
REASSEMBLY
Reassembly is in the reverse order of disassembly
INSTALLATION
Installation is in the reverse order of removal.