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CHRYSLER SERVICE MANUAL
STEERING—421
plane, as shown in Figure 57. There are no mas-
ter serrations on either the worm shaft or the
coupling. A mark is scribed on the coupling.
This mark should be set at 12 o'clock when the
steering worm shaft is at center so that the
steering tube master serration will be in posi-
tion to allow for proper installation of steering
wheel.
c. Unequal Width Teeth Gear Shaft
(Before Type Gear Shaft)
Check the steering for being properly centered
by turning the coupling in each direction from
the center. Pitman arm backlash should become
evident at equal distances in both directions
when turning from center. It may be necessary
to reposition the coupling to obtain equal travel
in both directions in which case it will be neces-
sary to readjust Pitman arm backlash.
d. Equal Width Teeth Gear Shafts
(After Type Gear Shaft)
A new gear shaft entered production in the
Power Steering Units. This new shaft has an
equal width center tooth and requires a different
adjustment procedure than the adjustment used
on gears built with the unequal center tooth. The
letter "O" is stenciled on the steering arm end
of the new shaft for positive identification.
Center the steering tube coupling or steering
wheel to the overall travel of the steering gear.
With gear in center position, loosen adjustment
until there is some backlash. Slowly turn the
adjusting screw in until the backlash disap-
pears. Turn the adjusting screw in three-fourths
of a turn and lock in position.
NOTE
Use a very light feather touch on the steering
arm when checking for backlash.
The new equal tooth gear shaft may be in-
stalled in previously built gears without chang-
ing the lower piston rod. However, if a new
shaft is used, this adjustment must be followed.
If difficulty is experienced in adjusting the
gear shaft in previously built gears, the follow-
ing check can be made to determine if the new
equal tooth gear shaft may have been installed.
With the steering gear centered, turn the ad-
justing screw until a small amount of backlash
can be felt. Turn the coupling or steering wheel
slowly to either extreme limit of travel. If the
amount of backlash increases as it is turned,
it is an indication that the unit has the original
unequal tooth gear shaft. If the amount of back-
lash does not increase, then the new equal tooth
gear shaft has been installed. Identification of
the new gear shaft can also be made upon in-
spection of the shaft by the absence of the
chamfer on the center tooth.
20. INSTALLATION OF COAXIAL POWER
STEERING GEAR (In Car)
Install the Coaxial Power Steering Gear assem-
bly from under the car, and up through the dash
panel into the jacket. Install housing to frame
attaching bolts, flat washers, swivel washers
and nuts, but do not tighten. Swivel washers
permit alignment of housing to dash.
Slide steering column jacket down over worm
housing. Install turn signal lever, being sure
column jacket does not restrict lever. Tighten
jacket to Coaxial housing clamp. Connect turn
signal wires. Install steering column to instru-
ment panel bracket and install steering wheel.
If clearance between steering column jacket and
steering wheel is less than % inch, adjust steer-
ing column jacket to provide proper clearance.
Install dust pads and retaining plates.
Tighten front upper and lower gear housing
to frame attaching bolts to 20 foot-pounds
torque. Install wedge over rear bolt between
housing and frame, so that tapered surfaces
match, tapping it lightly in place. Tighten three
attaching bolts to 70 foot-pounds torque. Install
horn ring and horn wire in steering wheel and
install horn ring ornament.
Connect hoses from steering gear to hydrau-
lic pump.
21. ADJUSTMENTS OF COAXIAL GEAR
(Installed)
Adjusting Manual Control Valve (Centering
Hydraulically.) (In Car.) Where it is difficult to
rotate the steering wheel in one direction but not
in the other direction, or where the wheels turn
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