Dodge Ram Truck 1500-2500-3500. Manual — part 2066
The blower motor and blower motor wheel are factory balanced and cannot be adjusted or repaired. If faulty or
damaged, the blower motor and blower wheel must be replaced as an assembly.
DIAGNOSIS AND TESTING
BLOWER MOTOR
WARNING: 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
negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before
performing further diagnosis or service. Failure to take the proper precautions could result in accidental
airbag deployment and possible personal injury or death.
For circuit descriptions and diagrams, refer to Air Conditioning/Heater in Group 8W - Wiring Diagrams. Possible
causes of an inoperative blower motor include:
•
Faulty fuse
•
Faulty blower motor.
•
Faulty blower motor resistor block
•
Faulty blower motor circuit wiring or wire harness connectors
•
Faulty blower motor control
Possible causes of the blower motor not operating in all speeds include:
•
Faulty fuse
•
Faulty blower motor resistor block
•
Faulty blower motor circuit wiring or wire harness connectors
•
Faulty blower motor control
VIBRATION
Possible causes of blower motor vibration include:
•
Improper blower motor mounting
•
Foreign material in blower wheel causing out of balance condition
•
Blower motor faulty.
•
Improper blower wheel mounting
•
Blower wheel out of balance or deformed
NOISE
To determine if the blower motor is the source of the noise, simply switch the blower motor from Off to On. To verify
that the blower motor is the source of the noise, unplug the blower motor wire harness connector and operate the
heater-A/C system. If the noise goes away, possible causes include:
•
Improper blower motor mounting
•
Foreign material in the HVAC air inlet housing
•
Blower motor faulty.
•
Improper blower wheel mounting
24 - 264
DISTRIBUTION
DR/DH
REMOVAL
NOTE: The blower motor is located on the passen-
ger side of the vehicle under the instrument panel.
The blower motor can be removed from the vehi-
cle without having to remove the HVAC housing.
1. Disconnect and isolate the negative battery cable.
2. Disconnect the HVAC wire harness lead (1) from
the blower motor (2).
3. Remove the HVAC wire harness lead from the two
wire harness retainers (3).
4. Remove the three screws (4) that secure the
blower motor to the bottom of the HVAC housing
(5).
5. Remove the blower motor from the HVAC housing.
INSTALLATION
1. Position the blower motor (2) into the bottom of the
HVAC housing (5).
2. Install the three screws (4) that secure the blower
motor to the HVAC housing. Tighten the screws to
2.2 N·m (20 in. lbs.).
3. Connect the HVAC wire harness lead (1) to the
blower motor and install the wire harness lead into
the two wire harness retainers (3).
4. Reconnect the negative battery cable.
DR/DH
DISTRIBUTION
24 - 265
OUTLETS-AIR
DESCRIPTION
There are four defroster air outlets (1) in the defroster
grille (2) located on the top of the instrument panel
(3). The airflow from the defroster outlets is directed
by fixed vanes in the defroster grille and cannot be
adjusted. The defroster air outlets are not serviceable
from the defroster grille (Refer to 23 - BODY/INSTRU-
MENT PANEL/DEFROSTER GRILLE - REMOVAL).
There are two side window demister air outlets (4).
One located on each end of the instrument panel top
cover. The airflow from the side window demister air
outlets is directed by fixed vanes in the outlets and
cannot be adjusted. The side window demister air out-
lets are only serviced with the instrument panel top
cover.
There are five instrument panel air outlets (5). One air
outlet is located near the driver side end of the instru-
ment panel facing the rear of the vehicle and two out-
lets are located on the passenger side end of the
instrument panel. Two other air outlets are located
near the top of the instrument panel center bezel. Each of the instrument panel air outlets contain a grille with
movable vanes (6) that are used to direct or shut off the flow of the conditioned air leaving the instrument panel
outlets. The instrument panel air outlets can be serviced separately.
REMOVAL
NOTE: The instrument panel air outlets are retained to the pivots within the air outlet housings by a snap
fit.
1. Using a trim stick C-4755 or equivalent (1), gently
pry the panel air outlet(s) (2) out of the panel outlet
housing(s) (3) as required.
24 - 266
DISTRIBUTION
DR/DH
INSTALLATION
1. Install the air outlet (1) onto the pivot shaft (2)
located at the bottom of the instrument panel air
outlet housing (3).
2. Gently push the top of the air outlet (1) onto the
pivot shaft (2) at the top of the instrument panel air
outlet housing (3) until it snaps into place.
DR/DH
DISTRIBUTION
24 - 267
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст