Dodge Dakota Sport 2001 Service Manual page 1404

AN
PUMP
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . . 19
PUMP LEAKAGE . . . . . . . . . . . . . . . . . . . . . . . 19
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . . 20
POWER STEERING PUMP - INITIAL
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 22
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . 22
FLUID COOLER
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
PUMP
DESCRIPTION
The pump is connected to the steering gear via the
pressure hose and the return hose. The pump shaft
has a pressed-on pulley that is belt driven by the
crankshaft pulley.
Trailer tow option vehicles are equipped with a
power steering pump oil cooler. On the 5.2L and 5.9L
the oil cooler is mounted to the engine block. On the
4.7L the oil cooler is mounted to the power steering
pump.
NOTE: Power steering pumps are not interchange-
able with pumps installed on other vehicles.
OPERATION
Hydraulic pressure is provided for the power steer-
ing gear by the belt driven power steering pump (Fig.
1) and (Fig. 2). The power steering pumps are con-
stant flow rate and displacement, vane-type pumps.
PUMP
TABLE OF CONTENTS
page
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 23
HOSES
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 23
POWER STEERING PRESSURE SWITCH
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
PULLEY
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Fig. 1 Power Steering Pump - 5.2L & 5.9L
1 - RESERVOIR CAP AND DIPSTICK
2 - RESERVOIR
DIAGNOSIS AND TESTING - PUMP LEAKAGE
The pump is serviced as an assembly and should
not be disassembled. Plastic pump reservoirs can be
replace and the reservoir O-ring.
Check for leaks in the following areas:
• Pump shaft seal behind the pulley
• Pump to reservoir O-ring
• Reservoir cap
• Pressure and return lines
• Flow control valve fitting
PUMP 19 - 19
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