Expansion Valve - Suzuki WagonR+ RB310 Service Manual

C
Continuity
No continuity
A

EXPANSION VALVE

INSPECTION
Refer to "Troubleshooting Procedure Using Manifold Gauge Set"
earlier in this section for inspection.
REMOVAL
1) Recover refrigerant from refrigeration system by using recovery
and recycling equipment.
2) Loosen liquid pipe mounting bolt (1).
3) Loosen expansion attaching bolts (2) and remove expansion
valve (3).
INSTALLATION
Reverse removal procedure for installation, noting the following
points.
D Apply compressor oil to expansion valve O-ring and connecting
hose and pipe O-ring.
D Evacuate and charge system according to previously described
procedure.
DUAL PRESSURE SWITCH
INSPECTION
1) Check dual pressure switch (1) for continuity at normal tempera-
ture (approx. 25_C (77_F)) when A/C system has a proper
charge of refrigerant and when A/C system (compressor) is un-
der operation. In each of these cases, switch should show prop-
er continuity.
1
2) Check switch for continuity at specified pressure as shown.
A: Approx 200 KPa (2.0 kg/cm
B: Approx 3200 KPa (32 kg/cm
D
C: Approx 230 KPa (2.3 kg/cm
D: Approx 2800 KPa (28 kg/cm
B
Pressure
REMOVAL
1) Recover refrigerant from refrigeration system by using recovery
and recycling equipment.
2) Disconnect negative (–) cable at battery.
3) Remove dual pressure switch.
INSTALLATION
Reverse removal procedure for installation, noting the following points.
D Apply compressor oil to dual pressure switch O-ring.
D Evacuate and charge system according to previously described
procedure.
Tightening torque for pressure sensor
.
11 N m (1.1 kg-m, 8.0 lb-ft)
AIR CONDITIONING (OPTIONAL) 1B-21
2
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2
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