Ram B1500, B2500, B3500, 1999-2003

Removal & Installation

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  1. Disconnect and isolate the battery negative cable.
  2.  
  3. Disconnect the blower motor cooling tube from the nipple on the blower motor housing.
  4.  
  5. Disengage the blower motor wire harness from the wire harness retainer.
  6.  
  7. Unplug the blower motor wire harness connector from the HVAC housing wire harness.
  8.  
  9. Remove the three screws that secure the blower motor and blower wheel assembly to the HVAC housing.
  10.  
  11. Lower the blower motor and wheel assembly, and cover, from the HVAC housing.
  12.  
  13. Remove the blower wheel retainer clip and remove the wheel from the blower motor shaft.
  14.  

To install:


NOTE
If installing the blower motor wheel only, 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. 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.

  1. Be certain that the blower motor seal is installed on the blower motor housing.
  2.  
  3. Install the blower motor and wheel assembly, and cover in the HVAC housing with three mounting screws. Tighten the mounting screws to 20 inch lbs. (2.2 Nm).
  4.  
  5. Plug the blower motor wire harness connector into the HVAC housing wire harness.
  6.  
  7. Install the blower motor wire harness into the wire harness retainer.
  8.  
  9. Connect the blower motor cooling tube to the nipple on the blower motor housing.
  10.  
  11. Connect the battery negative cable.
  12.  


CAUTION
On vehicles equipped with airbags, disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to take the proper precautions could result in an accidental airbag deployment, possible personal injury or death.


NOTE
The blower motor is located on the passenger side of the vehicle under the instrument panel. The blower motor can be removed from the vehicle without having to remove the HVAC housing.

  1. Disconnect and isolate the battery negative cable.
  2.  
  3. Disconnect the wire harness connector from the blower motor.
  4.  
  5. Remove the three screws that secure the blower motor to the HVAC housing.
  6.  
  7. Remove the blower motor from the HVAC housing by rotating and tilting the blower motor as needed for clearance.

    Click image to see an enlarged view

    Fig. View of the resistor block screws (1), blower motor resistor (2), resistor block wire connector (3), blower motor screw (4), blower motor (5), blower motor wire connector (6), blower motor screw (7), HVAC housing (8), wire harness retainer (9), blower motor screw (10)

  8.  

To install:

  1. Align and install the blower motor into the HVAC housing.
  2.  
  3. Install the three screws that secure the blower motor to the HVAC housing. Tighten the screws to 20 inch lbs. (2.2 Nm).
  4.  
  5. Connect the wire harness connector to the blower motor.
  6.  
  7. Reconnect the battery negative cable.
  8.  

  1. Disconnect and isolate the battery negative cable.
  2.  
  3. Unplug the wire harness connector from the blower motor.
  4.  
  5. Remove the blower motor cooling tube from the nipple on the blower housing cover below the blower motor.
  6.  
  7. Remove the three screws that secure the blower motor mounting plate to the blower housing cover.
  8.  
  9. Remove the blower motor assembly from the blower housing.
  10.  
  11. If the vehicle is equipped with air conditioning, move the suction and discharge lines as required to remove the blower motor assembly from the engine compartment.
  12.  
  13. Remove the retainer clip from the hub of the blower wheel.
  14.  
  15. Remove the wheel from the blower motor shaft.
  16.  
  17. Press the hub of the blower wheel onto the blower motor shaft. Be sure the flat on the blower motor shaft is indexed to the flat on the inside of the hub.

    Click image to see an enlarged view

    Fig. View of the heater & A/C housing (1), mounting screws (2), connector (3), blower motor (4), cooling tube (5), blower housing cover (6) and rubber seal (7)

  18.  

To install:

  1. 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.
  2.  
  3. Apply a small bead of RTV rubber sealant to the blower motor side of the rubber seal and isolator unit. This will help to secure the seal to the blower mounting plate during installation.
  4.  
  5. Position the rubber seal and isolator unit to the blower motor mounting plate.
  6.  
  7. Position the blower motor and seal to the three mounting bosses on the blower housing cover and press the isolators over the mounting bosses.
  8.  
  9. Secure the blower motor mounting plate to the blower housing cover with the three mounting screws.
  10.  
  11. Tighten the mounting screws to 20 inch lbs. (2.2 Nm)
  12.  
  13. Reinstall the blower motor cooling tube to the nipple on the blower housing cover.
  14.  
  15. Plug in the blower motor wire harness connector.
  16.  
  17. Connect the battery negative cable.
  18.  

The blower motor is located on the passenger's side beneath the dashboard.

  1. Disconnect the battery negative cable(s).
  2.  
  3. Disconnect the blower wiring after disengaging the wiring harness from the retainer clip.
  4.  
  5. Remove the blower motor cooling tube.
  6.  
  7. Remove the hardware securing the blower motor and wheel assembly to the heater-A/C housing.
  8.  
  9. Remove the blower motor assembly.
  10.  
  11. Remove the wheel, if desired, by removing the clip from the motor shaft.
  12.  
  13. Installation is the reverse of removal. Note the following points:
    1. When installing the wheel onto the shaft, be sure to line up the flats.
    2.  
    3. The ears of the retaining clip must be on the shaft flat.
    4.  
    5. Be sure the blower motor seal is in place.
    6.  

  14.  



Click image to see an enlarged view

Fig. Removing the blower motor-Ram



Click image to see an enlarged view

Fig. Blower motor cooling tube-Ram

 
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