Chrysler DODGE D150 1993 Service Manual page 1474

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Fig. 12 Blower Wheel
(7) Install the 3 arms. Install n u t t h a t attaches 3
door arms to doors on the top cover of the unit (Fig.
11).
INSTALLATION
(1) Install the evaporator heater assembly. Plastic
instrument panel may have to be flexed outward.
(2) Install and tighten the screw t h a t retains the
evaporator heater assembly to cowl side sheet metal.
(3) Install the retaining nuts on engine side.
(4) Connect vacuum lines on engine side.
(5) Install blower motor connector on engine side.
(6) Remove wiring connector from resistor block.
(7) Connect vacuum lines from extension on con­
trol unit and attach vacuum lines to defroster duct
(Fig. 10).
(8) Connect temperature control cable to unit
through glove box.
(9) Install floor air distribution duct.
(10) Install center distribution duct.
(11) Attach radio ground strap.
(12) Remove right half of lower reinforcement by
removing screws attaching it to the instrument panel
and the screw attaching it to t h e cowl side trim
panel.
(13) Install ash receiver.
(14) Install structural brace through glove box
opening. Install screws and loosen nuts.
(15) Install glove box by installing mounting
screws.
(16) Install right cowl side trim panel, if so
equipped.
(17) Position transfer case and/or gear shift levers.
(18) Remove plugs from heater hoses and unit. In­
stall condensate tube (Fig. 9).
(19) Connect refrigerant and heater lines to unit
on engine side.
} (20) Connect the negative cable to the battery.
(21) Fill the cooling system (refer to Group 7, Cool­
ing System).
(22) Evacuate and charge the system.
(23) Check operation of all controls and perfor­
mance of the A/C system.
HEATING AND AIR CONDITIONING 24 - 37
'H" VALVE
Fig. 13 Expansion (H) Valve Assembly
ELECTRONIC TEMPERATURE CYCLING SWITCH
REMOVAL
(1) Remove the electrical wires to the switch.
(2) Rotate switch counterclockwise to remove from
pressure switch port.
(3) Remove and discard old O-ring.
INSTALLATION
(1) Install new O-ring. Refrigerant oil must be ap­
plied to the new O-ring.
(2) Rotate switch clockwise to install on suction
line pressure switch port. Tighten switch to 5.65 N # m
(50 in. lbs.) torque.
C A U T I O N : Power tools should not be used for in­
stallation of the s w i t c h . T h e possibility of stripping
the switch threads occurs above 5.88 N*m (52 in.
lbs.) torque.
(3) Connect wires.
(4) Verify operation.
EXPANSION (H) VALVE
REMOVAL
The system must be completely discharged before
opening any refrigerant lines.
(1) Remove the bolt in center of plumbing sealing
plate (Fig. 13).
(2) Carefully pull refrigerant line assembly to­
wards front of vehicle. Take care NOT to scratch
valve sealing surfaces with tube pilots.
(3) Remove the Torx Head screws (Fig. 13). Hold
valve, once cap screws are removed valve is com­
pletely disconnected.
(4) Carefully remove valve.