Hudson 1955 Rambler, Техническое и сервисное руководство

Страница: 232 / 292

ball and socket joints, wheel bearings, and
steering knuckle pin for looseness. Correct if
required prior to making adjustments on the
steering gear.
Worm Bearing Adjustment
Turn the steering wheel about one turn from the
straight ahead position and secure the wheel to
prevent any movement.
Worm bearing end play is determined by shaking
the front wheel sideways noting any end movement
that may be felt between the steering wheel hub
and the steering jacket tube.
CAUTION: Be sure the movement noted is not
looseness in the steering jacket tube bear-
ing.
If end play is present, adjust the worm bearings
by loosening the four cover cap screws about
one-eighth inch.
Separate the top shim, using a knife blade, and
remove. Do not mutilate the remaining shims or
gaskets. Reassemble the cover and reinspect for
end play.
Remove only one shim at a time to prevent
adjusting the worm bearings too tight which will
cause the steering gear to become too hard to turn.
Steering Gear Alignment
Loosen the mounting bolts just enough to allow the
gear to shift on the frame and line up at the angle
determined by the height setting of the jacket tube
bracket. Then retighten the frame bracket bolts.
Loosen the jacket tube bracket, allow it to match
the gear column position, and retighten.
The steering gear alignment should be inspected
and corrected prior to inspecting the cross shaft
roller and worm mesh.
Inspection and Adjustment of Cross Shaft
Roller and Worm Mesh
Turn the steering wheel to the mid-position of its
turning limits (pitman arm disconnected). This
should place both steering wheel spokes an equal
distance from a horizontal position and the
steering gear roller on the worm high point. If
the steering wheel is removed, the wide flute on
the upper end of the worm tube should be centered
to the bottom.
Shake the pitman arm sideways to determine the
amount of clearance between the worm and cross
shaft roller. A movement in excess of 1/32" of the
pitman arm indicates the roller and worm mesh must
be ad-justed.
Adjustment of the cross shaft roller and worm mesh
is accomplished by removing the locking cap from
the external adjusting screw. Then remove the star
lock- washer and tighten the external screw. DO
NOT OVERTIGHTEN. After each adjustment, reinspect
for proper mesh by shaking the pitman arm.
Steering Gear Removal
"Hornet" and "Wasp" Series
The steering gear complete with jacket tube
is removed up through the' access opening in
the toe-board. Disconnect the shift rods at
the shift levers and pitman arm from cross
shaft. Use pitman arm puller J-1376 to remove
pitman arm. Remove the mounting bolts at the
steering gear housing and disconnect at the
instrument panel bracket. Then pull steering
wheel using puller J-4630A.
Disconnect all wires, under the dash, that
are attached to the jacket tube; tag all wires
for identification.
"Rambler" Series
The steering gear is removed from the bottom
of the car without removing the jacket tube.
The steering wheel (using steering wheel
puller J-5290) and pitman arm (using pitman
arm puller J-4490) must be removed and the
cooling system drained to permit removing the
radiator to water pump coolant line.
POWER STEERING
The power steering equipment is of the linkage
type consisting of an oil reservoir, oil pump,
oil flow control valve, oil pressure relief
valve, control valve, and power cylinder.
The oil reservoir contains a filter element
to prevent the circulation of dirt through the
system. The system is also vented and filled
at the reservoir.
The oil pump is an engine driven type pump
mounted on the front side of the engine.
The oil flow control valve located in the
pump cover controls the maximum volume output
to prevent hydraulic noise and overheating of
the oil.
The relief valve located within the flow
control valve is pre-set to control the
maximum pressure output. This valve prevents
excessive pressure to build up in the system
which may damage parts.
Principle of Operation
Oil is supplied to the pump from the reser-
voir. Oil is then directed from the pump to
the inlet or pressure port of the cylinder and
valve assembly through passages to the control
valve.
The control valve consists of a sleeve type
housing containing the necessary passages and
ports. Located in the precision bore of the
housing is a movable valve spool, two reaction
pistons, and a stud ball follower. Lands and
grooves on the valve spool indexing with the
ports in the housing control the direction of
oil flow. A stud attached to the pitman arm
extends through the control valve housing and
can move laterally in either direction.
The valve spool is normally centered by oil
10 TECHNICAL SERVICE MANUAL