Jeep Cherokee (XJ): Evaporator coil. Fixed orifice tube. Heater-a/c control

Evaporator coil

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO GROUP 8M - PASSIVE RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

(1) Remove and disassemble the heater-A/C housing.

See Heater-A/C Housing in this group for the procedures.

(2) Lift the evaporator coil unit out of the lower half of the heater-A/C housing (Fig. 36).

(3) Reverse the removal procedures to install. Be certain that the evaporator foam insulator wrap and rubber tube seal are reinstalled.

NOTE: If the evaporator is replaced, add 60 milliliters (2 fluid ounces) of refrigerant oil to the refrigerant system. Use only refrigerant oil of the type recommended for the compressor in the vehicle

Fixed orifice tube

The fixed orifice tube is located in the liquid line (Left-Hand Drive) or the liquid line jumper (Right- Hand Drive) near the condenser. The orifice has filter screens on the inlet and outlet ends of the tube body.

If the fixed orifice tube is faulty or plugged, the liquid line unit or liquid line jumper unit must be replaced. See Liquid Line in this group for the service procedures.

Fig. 36 Evaporator Coil Remove/Install

1 - EVAPORATOR COIL
2 - TUBE SEAL
3 - CONDENSATE DRAIN TUBE
4 - FOAM INSULATOR WRAP

Heater-a/c control

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO GROUP 8M - PASSIVE RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

REMOVAL

(1) Disconnect and isolate the battery negative cable.

(2) Roll down the glove box from the instrument panel. Refer to Glove Box in Group 8E - Instrument Panel Systems for the procedures.

(3) Reach through the instrument panel glove box opening to access and unplug the two h

(4) Remove the center bezel from the instrument panel. Refer to Instrument Panel Center Bezel in Group 8E - Instrument Panel Systems for the procedures.

(5) Release the vacuum harness push-in retainer from the instrument panel directly beneath the heater- A/C control.

(6) Remove the four screws that secure the heater- A/C control to the instrument panel (Fig. 37).

Fig. 37 Heater-A/C Control Remove/Install

1 - MOUNTING HOLES
2 - CONTROL HEAD
3 - HEATER-A/C CONTROL HEAD
4 - MOUNTING HOLES
5 - VACUUM HARNESS
6 - TEMPERATURE SELECT CONTROL
7 - MODE SELECT CONTROL
8 - BLOWER SPEED CONTROL

(7) Pull the heater-A/C control assembly away from the instrument panel far enough to access the connections on the back of the control.

(8) Unplug the wire harness connectors from the back of the heater-A/C control (Fig. 38).

(9) Reach through the instrument panel glove box opening to guide the heater-A/C control half of the vacuum harness around any obstacles while pulling the heater-A/C control out from the front of the instrument panel.

INSTALLATION

(1) Plug the wire harness connectors into the back of the heater-A/C control.

(2) Route the vacuum harness through the instrument panel opening and reinstall the vacuum harness push-in retainer.

(3) Reach through the instrument panel glove box opening to reconnect the two halves of the heater-A/C vacuum harness connector.

(4) Roll the glove box back up into the instrument panel. Refer to Glove Box in Group 8E - Instrument Panel Systems for the procedures.

Fig. 38 Heater-A/C Control Connections

1 - HEATER-A/C CONTROL HEAD
2 - MODE SELECT CONTROL
3 - BLOWER SPEED CONTROL
4 - ELECTRICAL CONNECTORS
5 - VACUUM HARNESS
6 - TEMPERATURE SELECT CONTROL

(5) Position the heater-A/C control in the instrument panel and secure it with four screws. Tighten the screws to 2.2 N·m (20 in. lbs.).

(6) Reinstall the center bezel onto the instrument panel. Refer to Instrument Panel Center Bezel in Group 8E - Instrument Panel Systems for the procedures.

(7) Connect the battery negative cable.