Dodge Durango

 Service Manual

Heating and Air Conditioning » Removal and installation
Blower motor

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.

FRONT

REMOVAL

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

See Heater-A/C Housing in the Removal and Installation section of this group for the procedures.

(2) Remove the three screws that secure the blower motor, air spoiler, and blower wheel assembly to the heater-A/C housing (Fig. 15).

(3) Pull the blower motor and wheel assembly out of the passenger compartment side of the heater-A/C housing while feeding the blower motor wire harness, grommet and connector through the hole on the dash panel side of the housing.

Fig. 15 Blower Motor Remove/Install

1 - BLOWER WHEEL

2 - SCREWS

3 - AIR SPOILER

4 - BLOWER MOTOR HOUSING

(4) Remove the blower wheel retainer clip and remove the wheel from the blower motor shaft (Fig.

16).

Fig. 16 Blower Motor Wheel Remove/Install

1 - BLOWER MOTOR WHEEL

2 - RETAINER CLIP

INSTALLATION

(1) Press the blower wheel hub onto the blower motor shaft. Be sure the flat on the blower motor shaft is indexed to the flat on the inside of the blower wheel hub.

(2) Install the retainer clip over the blower wheel hub. The ears of the retainer clip must be indexed over the flats on the blower motor shaft and blower wheel hub.

(3) Place the blower motor, air spoiler, and wheel assembly inside the heater-A/C housing and feed the blower motor wire harness connector through the grommet hole in the dash panel side of the housing.

(4) Pull the blower motor wiring through the hole from the dash panel side of the heater-A/C housing until the grommet is seated, while positioning the blower motor and blower wheel assembly inside the housing.

(5) Install the three screws that secure the blower motor, air spoiler, and wheel assembly to the heater- A/C housing. Tighten the screws to 2.2 N*m (20 in.

lbs.).

(6) Assemble and install the heater-A/C housing.

See Heater-A/C Housing in the Removal and Installation section of this group for the procedures.

REAR

The rear blower motor is used only on models with the optional rear overhead A/C unit. Because the rear blower motor and wheel are factory balanced units, the rear blower motor, wheel, housing and mounting hardware are serviced only as a complete unit.

REMOVAL

(1) Disconnect and isolate the battery negative cable.

(2) Remove the headliner from the passenger compartment of the vehicle. Refer to Group 23 - Body for the procedures.

(3) Disconnect the B-pillar drain hoses from the wye fittings on each side of the rear overhead A/C unit (Fig. 17).

Fig. 17 Rear Overhead A/C Drain Hose Remove/ Install

1 - REAR OVERHEAD A/C UNIT

2 - WYE FITTING

3 - CLIP

4 - GROMMET

5 - DRAIN HOSE

(4) Remove the nine screws that secure the lower housing cover to the rear overhead A/C unit.

(5) Release the lower housing cover snap retainer near the center of the outlet side (rear) of the rear overhead A/C unit (Fig. 18).

Fig. 18 Rear Overhead A/C Unit Lower Housing Cover Remove/Install

1 - REAR OVERHEAD A/C UNIT LOWER HOUSING COVER

2 - SNAP RETAINER

3 - OUTLET SIDE

4 - BLOWER MOTOR SWITCH WIRE HARNESS CONNECTOR

5 - INLET SIDE

6 - DRAIN HOSES

(6) Feed the rear blower motor switch wire harness and connector through the hole in the right end of the rear overhead A/C unit lower housing cover while removing the cover from the unit.

(7) Disengage the rear blower motor wire harness connector retainer from the mounting hole in the left rear corner of the rear overhead A/C unit upper housing cover.

(8) Unplug the rear blower motor wire harness connector (Fig. 19).

Fig. 19 Rear Blower Motor and Wheel Remove/ Instal

1 - WIRE HARNESS CONNECTORS

2 - BLOWER WHEEL AND HOUSING

3 - RESISTOR

4 - EVAPORATOR COIL

5 - BLOWER MOTOR

6 - SCREWS

(9) Remove the four screws that secure the rear blower motor, wheel and housing unit to the rear overhead A/C unit upper housing cover.

(10) Lower the rear blower motor, wheel and housing unit far enough to access and disengage the rear overhead A/C unit wire harness from each end of the blower housing.

(11) Remove the rear blower motor, wheel and housing unit from the rear overhead A/C unit.

INSTALLATION

(1) Position the rear blower motor, wheel and housing unit to the rear overhead A/C unit, and start the four mounting screws to hold it in position.

(2) Engage the rear overhead A/C unit wire harness in the routing holes on each end of the blower housing.

(3) Finish installing the four rear blower motor, wheel and housing unit mounting screws. Tighten the mounting screws to 3 N*m (27 in. lbs.).

(4) Plug in the rear blower motor wire harness connector.

(5) Engage the rear blower motor wire harness connector retainer in the mounting hole in the left rear corner of the rear overhead A/C unit upper housing cover.

(6) Feed the rear blower motor switch wire harness and connector through the hole in the right end of the rear overhead A/C unit lower housing cover while positioning the cover to the unit.

(7) Be certain that the lower housing cover snap retainer near the center of the outlet side (rear) of the rear overhead A/C unit is engaged.

(8) Install the nine screws that secure the lower housing cover to the rear overhead A/C unit. Tighten the mounting screws to 2.2 N*m (20 in. lbs.).

(9) Connect the B-pillar drain hoses to the wye fittings on each side of the rear overhead A/C unit.

(10) Reinstall the headliner to the passenger compartment of the vehicle. Refer to Group 23 - Body for the procedures.

(11) Connect the battery negative cable.

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