Dodge Durango

 Service Manual

Heating and Air Conditioning » Removal and installation
Expansion valve

FRONT

WARNING: REVIEW THE WARNINGS AND CAUTIONS IN THE GENERAL INFORMATION SECTION NEAR THE FRONT OF THIS GROUP BEFORE PERFORMING THE FOLLOWING OPERATION.

REMOVAL

(1) Disconnect and isolate the battery negative cable.

(2) Recover the refrigerant from the refrigerant system. See Refrigerant Recovery in the Service Procedures section of this group.

(3) Remove the rear liquid line from the engine compartment. See Liquid Line in the Removal and Installation section of this group for the procedures.

(4) Remove the electronic cycling clutch switch from the outboard side of the expansion valve. See Electronic Cycling Clutch Switch in the Removal and Installation section of this group for the procedures.

(5) Remove the two screws that secure the expansion valve to the evaporator tube mounting flange (Fig. 56).

Fig. 56 Expansion Valve Remove/Install

1 - EXPANSION VALVE

2 - EVAPORATOR TUBE MOUNTING FLANGE

3 - SCREW

(6) Remove the expansion valve from the evaporator tube mounting flange. Install plugs in, or tape over all of the opened refrigerant line fittings.

INSTALLATION

(1) Remove the tape or plugs from the evaporator tubes and the evaporator tube mounting flange side  of the expansion valve. Install the expansion valve to the evaporator tube mounting flange and secure with two screws. Tighten the mounting screws to 11.4 N*m (100 in. lbs.).

(2) Reinstall the electronic cycling clutch switch to the outboard side of the expansion valve. See Electronic Cycling Clutch Switch in the Removal and Installation section of this group for the procedures.

(3) Reinstall the rear liquid line to the engine compartment.

See Liquid Line in the Removal and Installation section of this group for the procedures.

(4) Connect the battery negative cable.

(5) Evacuate the refrigerant system. See Refrigerant System Evacuate in the Service Procedures section of this group.

(6) Charge the refrigerant system. See Refrigerant System Charge in the Service Procedures section of this group.

REAR

WARNING: REVIEW THE WARNINGS AND CAUTIONS IN THE GENERAL INFORMATION SECTION NEAR THE FRONT OF THIS GROUP BEFORE PERFORMING THE FOLLOWING OPERATION.

REMOVAL

(1) Disconnect and isolate the battery negative cable.

(2) Recover the refrigerant from the refrigerant system. See Refrigerant Recovery in the Service Procedures section of this group.

(3) Remove the engine air filter housing. Refer to Group 14 - Fuel System for the procedures.

(4) Remove the underbody line. See Underbody Refrigerant Line in the Removal and Installation section of this group for the procedures. Remove the line from the vehicle and install plugs in, or tape over, all of the open refrigerant fittings.

(5) Disassemble the bolt (M6) from the forward (longer) section of the underbody lines to the valve.

Install plugs in, or tape over the open refrigerant fittings.

(6) Disassemble the two bolts attaching the expansion valve to the rearward (shorter) section of the underbody lines. Install plugs in, or tape over the open refrigerant fittings.

INSTALLATION

(1) Remove the tape or plugs from expansion valve and the rearward (shorter) section of the underbody lines. Align the expansion valve ports with the block fitting on the rearward lines and assemble with the two bolts.

(2) Remove the tape or plugs from the forward (longer) section of the underbody lines. Align the  expansion valve ports and stud with the block fitting on the forward lines. Secure with the mounting bolt.

(3) Install the underbody refrigerant lines. See Underbody Refrigerant Line in the Removal and Installation section of this group.

(4) Install the engine air filter housing. Refer to Group 14 - Fuel System for the procedures.

(5) Evacuate and charge the refrigerant system.

See Refrigerant System Evacuate in the Service Procedures section of this group.

(6) Connect the battery negative cable.

Fig. 57 REAR EXPANSION VALVE REMOVAL/ INSTALL

1 - SCREW

2 - SCREW (2)

3 - REAR UNDERBODY LINE MOUNTING BLOCK

4 - REAR EXPANSION VALVE

5 - FRONT UNDERBODY LINE MOUNTING BLOCK

Service warnings and precautions

B-pillar refrigerant line

Blower motor

Blower motor relay

Blower motor resistor

Compressor

Compressor clutch

Compressor clutch relay

Condenser

Ducts and outlets

Electronic cycling clutch switch

Evaporator coil

Expansion valve

Filter-drier

Heater-a/c control

Heater-a/c housing

Heater-a/c housing door

Heater core

High pressure cut-off switch

Liquid line

Low pressure cut-off switch

Mode door vacuum actuator

Rear blower motor switch

Rear overhead a/c unit

Refrigerant line coupler

Suction and discharge line

Suction line jumper

Temperature control cable

Underbody refrigerant line

Vacuum check valve

Vacuum reservoir