POWER STEERING GEAR
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
POWER STEERING GEAR..................11
DIAGNOSIS AND TESTING
POWER STEERING GEAR LEAKAGE .........11
REMOVAL AND INSTALLATION
STEERING GEAR ........................12
DISASSEMBLY AND ASSEMBLY
HOUSING END PLUG .....................12
PITMAN SHAFT/SEALS/BEARING ............12
SPOOL VALVE ...........................14
RACK PISTON AND WORM SHAFT ...........16
ADJUSTMENTS
STEERING GEAR ........................19
SPECIFICATIONS
POWER STEERING GEAR..................21
TORQUE CHART .........................21
SPECIAL TOOLS
POWER STEERING GEAR..................21
DESCRIPTION AND OPERATION
POWER STEERING GEAR
DESCRIPTION
The power steering gear is a recirculating ball type
gear with a 14:1 ratio.
OPERATION
The gear acts as a rolling thread between the
worm shaft and rack piston. The worm shaft is sup-
ported by a thrust bearing at the lower end and a
bearing assembly at the upper end. When the worm
shaft is turned the rack piston moves. The rack pis-
ton teeth mesh with the pitman shaft. Turning the
worm shaft turns the pitman shaft, which turns the
steering linkage.
CAUTION: Components attached with a nut and
cotter pin must be torqued to specification. Then if
the slot in the nut does not line up with the cotter
pin hole, tighten nut until it is aligned. Never loosen
the nut to align the cotter pin hole.
DIAGNOSIS AND TESTING
POWER STEERING GEAR LEAKAGE
XJ STEERING 19 - 11
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