POWER STEERING GEAR
INDEX
page page
DESCRIPTION AND OPERATION
POWER STEERING GEAR ................. 35
REMOVAL AND INSTALLATION
POWER STEERING GEAR ................. 36
DISASSEMBLY AND ASSEMBLY
OUTER TIE ROD END .................... 42
POWER STEERING GEAR MOUNTING BOLT
ISOLATOR ............................ 41
SPECIFICATIONS
STEERING GEAR FASTENER TORQUE
SPECIFICATIONS ...................... 43
SPECIAL TOOLS
POWER STEERING GEAR ................. 43
DESCRIPTION AND OPERATION
POWER STEERING GEAR
The power steering system consists of these six
major components. Power steering gear, (Fig. 1)
power steering pump, power steering fluid reservoir,
power steering fluid supply hose, power steering fluid
pressure hose, power steering fluid return hose and
cooler. Turning of the steering wheel is converted into
linear travel through the meshing of the helical pin-
ion teeth with the rack teeth. Power assist steering is
provided by an open center, rotary type control valve
which directs oil from the pump to either side of the
integral rack piston.
Road feel is controlled by the diameter of a torsion
bar which initially steers the vehicle. This movement
directs oil behind the integral rack piston, which, in
turn, builds up hydraulic pressure and assists in the
turning effort.
The drive tangs on the pinion of the power steering
pump mate loosely with a stub shaft. This is to per-
mit manual steering control to be maintained if the
drive belt on the power steering pump should break.
However, under these conditions, steering effort will
be increased.
Fig. 1 Power Steering Gear Assembly
JA STEERING 19 - 35
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