Dodge Ram Truck 1500-2500-3500. Manual — part 1491
SENSOR-TEMPERATURE/PRESSURE-MAP
DESCRIPTION
The combination, dual function Intake Manifold Air
Temperature Sensor/MAP Sensor (2) is installed into
the top of the intake manifold.
OPERATION
The combination, dual function Intake Manifold Air Temperature Sensor/MAP Sensor is installed into the top of the
intake manifold with the sensor element extending into the air stream.
The IAT portion of the sensor provides an input voltage to the Engine Control Module (ECM) indicating intake man-
ifold air temperature. The MAP portion of the sensor provides an input voltage to the ECM indicating turbocharger
boost pressure.
REMOVAL
The combination, dual function Intake Manifold Air
Temperature
Sensor/MAP
(IAT/MAP)
sensor
is
installed (2) into the top of the intake manifold.
1. Clean area around sensor.
2. Disconnect electrical connector (3) from IAT/MAP
sensor.
3. Remove two T-15 Torx headed screws (4).
4. Remove sensor from intake manifold.
14 - 152
FUEL INJECTION - DIESEL
DR/DH
5. Check condition of sensor o-ring (2).
INSTALLATION
1. Check condition of sensor o-ring.
2. Lubricate sensor o-ring with clean engine oil.
3. Clean sensor mounting area at intake manifold.
4. Position sensor into intake manifold.
5. Install and tighten 2 sensor mounting screws to 1 N·m (9 in. lbs.) torque.
6. Connect electrical connector to sensor.
SENSOR-MAP
DESCRIPTION
A combination, dual function Intake Manifold Air Temperature Sensor/MAP Sensor is used. Refer to Intake Air Tem-
perature Sensor/MAP Sensor for information.
SWITCH - PTO
DESCRIPTION
This Engine Control Module (ECM) input is used only on models equipped with aftermarket Power Take Off (PTO)
units.
OPERATION
This input is used only to tell the ECM that the aftermarket PTO (Power Take Off) unit has been engaged. The ECM
will disable (temporarily shut down) certain OBD II diagnostic trouble codes when the PTO unit is engaged.
DR/DH
FUEL INJECTION - DIESEL
14 - 153
STEERING
TABLE OF CONTENTS
page
page
STEERING
. . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
POWER STEERING FLOW AND PRESSURE
. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
GEAR - INDEPENDENT FRONT SUSPENSION
. . . . . . . . . . . . . . . . . . . . . . . 35
SUSPENSION . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
. . . . . . . . . . . . . . . . . . . . 55
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
. . . . . . . . . . . . . . . . . . . . . . . . . . 78
STEERING
DESCRIPTION
CAUTION: MOPAR
T
ATF+4 is to be used in the power steering system. No other power steering or auto-
matic transmission fluid is to be used in the system. Damage may result to the power steering pump and
system if any other fluid is used, and do not overfill.
Power steering systems consist of:
•
Steering column
•
Rack and pinion steering gear
•
Belt driven hydraulic steering pump
•
Pump pressure and return hoses
•
Oil Cooler
OPERATION
The steering column shaft is attached to the gear pin-
ion. The rotation of the pinion moves the gear rack
from side-to-side. This lateral action of the rack
pushes and pulls the tie rods (4) to change the direc-
tion of the front wheels.
Power assist is provided by an engine mounted
hydraulic pump which supplies hydraulic fluid pressure
to the steering gear (6).
DR/DH
STEERING
19 - 1
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст