A/C Control Panel; Fan Switch; Temperature Control Thermostat - Jeep 1987 Wrangler Workshop Manual

HEATING AND AIR CONDITIONING
AIR CONDITIONING SYSTEM
refrigerant, tilt the charging station rearward
momentarily.
Connect the heating element cord to the power
pack receptacle and turn the heater switch ON.
Allow the refrigerant to warm for about 10 min-
utes while the vacuum pump is operating.
WARNING: Wear goggles to protect the eyes.
Discharge and evacuate the system.
Close the low pressure valve on the charging
station.
Fully open the left hand refrigerant control valve
at the base of the cylinder and the high pres-
sure valve on the charging station.
Charge the system.
Close the refrigerant control valve and the high
pressure valve on the charging station.
CAUTION: Do not permit the liquid level to drop
below zero on the cylinder sight glass.
Close the manifold gauges after completion of
the charging operation and check the high and
low side pressures.
Check system operation.
CAUTION: Do not check system pressures until
the high and low pressure valves on the charg-
ing station are closed. The low pressure gauge
could be damaged if the valves are open.
Close all the valves on the charging station and
close the refrigerant drum valve when all the
operations are completed.
Back-seat the service valves by turning them
fully counterclockwise. Install the quick seal
caps on the valves afterward.
Disconnect the charging hoses from the service
valves. A small amount of refrigerant remaining
in the hoses will escape.
Discharge any R-12 left in the charging cylinder.
The cylinder is not designed to store
refrigerant.
A/C CONTROL PANEL
Fan Switch
The fan switch may be serviced by removing
the access plate located on the lower evapora-
tor core housing.
Temperature Control Thermostat
The evaporator housing must be removed and
disassembled to service the temperature con-
trol thermostat. Refer to the evaporator housing
removal/installation procedures.
When installing a replacement temperature
control thermostat, insert the capillary tube (1)
into the evaporator coil (2) a minimum of 5 cm (2
in).
CAUTION: Handle the tube with care to avoid
bends or kinks that could cause the thermostat
to malfunction.
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