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STEERING
19-1 9
(36) Stake the upper part of the wormshaft adjust-
CAUTION: Place a support under the adjusting nut
during the staking operation to avoid brinnelling
the piston, worm, or steel
balls.
(a) Hold a
VI
inch flat end punch on the center line
of the wormshaft end at a slight angle to the nut flange
(Fig. 16).
(b) Strike the punch a sharp blow with a hammer
and test preload.
NOTE: If the adiusting nut moved during the stak-
ing operation, it can be correctbd by striking the
nut a glancing blow in the direction required to re-
gain proper preload.
(c) After retesting for proper preload, stake the nut
at three more locations 90" apart around the upper
part of the nut.
(d) To test the total staking, torque the nut to 28
foot-pounds in either direction. If the nut does not
move the staking operation is satisfactory.
IMPORTANT: Retest the preload adjustment, the
torque of
16
to
24
inch ounces must remain after
the adjusting nut is securely locked.
(37) Position the spacer assembly over the center
race, engaging the dowel pin of the spacer in the slot
of the race, and the slot of the spacer entered over
the cylinder head ferrule.
NOTE: This will align the valve pivot lever hole in
the center bearing race with the valve pivot lever
hole in the center bearing spacer assembly. The
small
"0"
ring for the ferrule groove should not be
installed until after the upper reaction spring and
spacer have been installed.
(38) Install the upper reaction ring on the center
race and spacer with the flange down against the spac-
er.
ing nut into the knurled area of the shaft.
/
REACTION RING
N Y 1
246 A
Fig.
174nstalling the Reaction Seal Ring
in
the
Worm
Shaft
Support
(39) Install the upper reaction spring over the
re-
action ring with the cylinder head ferrule through the
hole in the reaction spring.
(40) Install the worm balancing ring (without flange)
inside the upper reaction ring.
(41) Lubricate the ferrule "0" ring with petrolatum
and install it in the groove on the cylinder head fer-
rule.
(42) If the oil seal was removed from the housing
head install a new seal with Tool C-3650 (Fig. 9). With
the lip of the seal toward the bearing, drive in the seal
until the tool bottoms on the support.
(43) Lubricate and install the reaction seal ring in
the groove in the face of the housing head with the
flat side of seal out (Fig. 17). Install the "0" ring
in
the groove on the housing head.
(44) Slide the housing head and arbor, Tool (2-3929
over the wormshaft carefully engaging the cylinder
head ferrule and "0" ring and making sure the re-
action rings enter the circular groove in the support.
Remove the tool arbor when the support is positioned.
(45) Align the parts on the power train
so
the valve
pivot lever holes in the center race and spacer assem-
bly index with the lever hole in the housing.
NOTE: If the gear shaft cover includes the needle
bearing, it
i s
serviced as a unit and should be re-
placed when bearing replacement is necessary.
(46) To remove the gear shaft needle bearings, re-
move grease retainer, oil seal snap ring with pliers,
Tool C-3229 and remove the seal back-up washer.
(47) Insert Tool C-3875 in the steering housing;
place the housing in a press and then press out the
bearings and the oil seal.
(48) To install the gear shaft lower needle bear-
ing, place the bearing on the end of Tool C-3875.
Press
the bearing into the steering gear housing
15/16
inch be-
low the end of the bore to provide space for the oil
seal, back-up washer and snap ring and cross shaft
grease retainer. See "Cross Shaft Oil Seal Replace-
ment."
CAUTION: The arbor adapter ring must be used
with the C-3875 Remover and Installer Arbor, other-
wise the bearings may be crushed.
(49) To install the upper needle bearing, place the
bearing on the end of Tool C-3875. Press the bearing
into housing flush with the end surface of the bore.
(50) Insert the gear shaft and adjusting screw into
the cover and using a screw driver through the
threaded hole in the cover, turn the screw counter-
clockwise to pull the shaft completely into the cover.
Lubricate a new seal ring and slide
it
over the adjust-
ing screw into position on top of the cover. Install the
adjusting screw lock nut, but do not tighten at this
time.
(51) Lubricate the cover "0" ring and gear shaft
cover groove with petrolatum and place the "0" ring
in the cover groove.
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