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19-6
STEERING
Fig, 12-Removing
the Lower Bearing C u p -
API and AP2 Models
bearing cup by turning the puller screw nut in a clock-
wise direction while holding the center screw.
(14) Wash all parts in clean solvent and blow dry
with compressed air.
(15) Test the operation of the ball nut assembly
on the wormshaft. If the ball nut does not travel
smoothly and freely on the wormshaft and there is
roughness or binding, the assembly must be replaced.
(16) Extreme care is necessary when handling the
aluminum worm bearing adjuster to avoid damaging
the
threads. It is equally important to avoid damaging
the mating threads in the gear housing. The worm-
shaft adjuster must
Never
be screwed into the hous-
ing without lubrication, or when threads are dirty or
damaged. These precautions
must
be taken to avoid
"picking up" the threads and ruining the housing
and/or the wormshaft bearing adjuster.
(17) Inspect the cross shaft for wear and check
fit
of the shaft in the housing bearings. Inspect the fit
of the shaft pilot in its housing bearing in the cover.
Make sure the wormshaft has not been bent or
otherwise damaged.
(18) The cross shaft and wormshaft oil seals should
be replaced when the unit is reconditioned.
(19) Install the cross shaft outer needle bearing by
placing the bearing on end of Tool C-3875 for AR1
and AR2 models and Tool (2-3333 for AP1 and AP2
CROSS SHAFT
BEARING
RAM
Fig. 73-Pressing
the Inner Bearing into the
Housing-AR7,
AR2, A V I and AV2 Models
AR1 and AR2 models and
Y 2
inch below for AP1 and
AP2 models to provide space for the oil seal.
CAUTION: The adapter ring must be used with re.
mover and installer arbor Tool C-3875 for ARl and
AR2 models and Tool C-3333 for APl and AP2
models, otherwise the bearings will be crushed.
(20) Install the inner needle bearing by placing
bearing on Tool C-3875 with the adapter ring for AR1
and AR2 models and Tool C-3333 for AP1 and AP2
models (Figs. 13 and 14). Press the bearing into the
inside end of the housing bore flush with the inside
end of the bore surface.
(21) Install the wormshaft bearing cups, position
the cups in the housing and bearing adjuster nut. Then
c-3333
NK458
models with the adapter ring. Press the bearing into
the housing to
inch below the end of the bore for
Fig.
7
&Pressing
the Inner Bearing into the
Housing-API
and AP2 Models
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