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TABLE XVI. MAGNUFLUX INSPECTION CHART.
Direction of
Inspection
Part Name
Magnetization
Method
Starter
Circular
Wet
Shaftgear
Continuous
Longitudinal
Wet
Continuous
Starter Worm
Circular
Wet
Shaft
Continuous
Starter Worm
Longitudinal
Wet
Gear
Residual
c.
Inspection by the 1\.1:agnaflux method shoum be con-
ducted on all ferrous parts listed in Table XVI and in
accordance with the methods and data in the table be-
fore dimensional inspection.
Before magnetic inspection of any part, plug
all holes with tight fitting plugs or with hard
grease (which is soluble in lubricating oil) to
prevent an accumulation of particles in re-
mote, and hard to clean places. After in-
spection remove all such plugs and clean the
part thoroughly with solvent and dry with com-
pressed air.
Check for complete demagne-
tization.
d.
Inspect aluminum alloy casting by fluorescent par-
ticle inspection method. The standard operating tech-
nique for the process is applicable.
e. Areas of running parts and bushings subject to wear
should be inspected for serviceable fit with mating
parts by comparative linear measurements and align-
ment measurements.
This will be accomplished by
using standard measuring instruments s(Jch as mi-
crometers, telescoping gauges and dial indicators.
6.
REPAIR AND REPLACEMENT.
a.
The parts listed in the Table of Limits should be
inspected dimensionally as described in paragraph 5e.
b. Do not attempt to replace adapter sleeve
if
surface
roughness is less than specified. Return to factory for
replacement.
c.
If
the needle bearing(42, figure 37)istobe replac-
ed it may be removed either with an arbor press or
with the installer illustrated in figure 38. Installation
is described in figure 39.
d.
If
needle bearing (31) is to be replaced, press it
from worm wheel (32), and install a new bearing so it
is recessed 0.09 inch from either end of worm wheel
hub.
e.
If
bushing (26) is to be replaced it can be accom-
plished by drilling to a thin shell and collapsing or
pressing with an arbor press using a piloted drift.
Current
Critical
(Amperes)
Areas
1500
Teeth, Drum
Shaft between
spur gear and
drum
1500
Slotted end,
around Key
Slot
Teeth
Inspect
For
Fatigue,
Heat Cracks
Fatigue Cracks
Fatigue Cracks
Fatigue Cracks
.5625
.010 MAX'75620
;-COLD ROLLED STEEL BAR STOCK
~
+
~
l
J,
I@
!S:
3
END
SIDE VIEW
16
VIEW
NOTE: ALL DIMENSIONS IN INCHES ~
x
450CHAMFER
Figure 38. Needle Bearing Installer.
Figure 39. Installing Needle Bearing.
59
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