Chrysler Sebring 2004 Service Manual page 1250

JR
PUMP
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 29
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
STANDARD PROCEDURE - POWER
STEERING PUMP INITIAL OPERATION
REMOVAL
REMOVAL - PUMP (2.0L/2.4L ENGINE)
REMOVAL - PUMP (2.7L ENGINE)
DISASSEMBLY - PUMP (PULLEY)
ASSEMBLY - PUMP (PULLEY)
INSTALLATION
INSTALLATION - PUMP (2.0L/2.4L ENGINE)
INSTALLATION - PUMP (2.7L ENGINE)
FLUID
STANDARD PROCEDURE - POWER
STEERING FLUID LEVEL CHECKING
PUMP
DESCRIPTION
All vehicles are equipped with power steering. The
hydraulic pressure for operation of the power steer-
ing gear is provided by a belt driven power steering
pump (Fig. 1) (Fig. 2). The pump is a constant flow
rate and displacement vane type power steering
pump.
The power steering pump is mounted on the back
side of the engine, above the front suspension cross-
member.
The power steering pump uses a remote mounted
reservoir for storage of the power steering fluid.
Because of unique shaft bearings, flow control lev-
els or pump displacements, power steering pumps
may be used only on specific vehicle applications. Be
sure that the power steering pump is only replaced
with a pump that is the correct replacement for that
specific application.
OPERATION
Hydraulic pressure is provided for operation of the
power steering gear by the belt driven power steering
pump. The power steering pump is connected to the
steering gear by a power steering fluid pressure hose,
return hose, power steering fluid cooler and remote
power steering fluid reservoir.
Rectangular pumping vanes in the shaft driven
rotor move power steering fluid from the intake to
the cam ring pressure cavities of the power steering
PUMP
TABLE OF CONTENTS
page
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. 33
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HOSE - PRESSURE
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 35
HOSE - RETURN
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 37
HOSE - SUPPLY
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 38
RESERVOIR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 38
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 39
Fig. 1 Power Steering Pump - 2.4L Engine
1 - SUPPLY FITTING
2 - PULLEY
3 - MOUNTING BRACKET
4 - PRESSURE FITTING
pump. As the rotor begins to turn, centrifugal force
throws the vanes against the inside surface of the
cam ring to pick up residual oil. This oil is then
forced into the high pressure area. As more oil is
picked up by the vanes, the additional oil is forced
into the cavities of the thrust plate through two
crossover holes in the cam ring and pressure plate.
The crossover holes empty into the high pressure
area between the pressure plate and the housing end
cover.
PUMP 19 - 29
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