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TM5-4120-384-14
5-9.
FAN
MOTOR
AND
HOUSING
REPAIR.-Continued
Remove
four
thru
bolts,
nuts
and
lock
washers.
(b)
Carefully separate end shield assemblies from stator
(c)
Using a brass or plastic bar and
and cable assembly.
hammer tap opposite sides, top, and bottom in
alternating sequence to break end bracket loose.
Remove
end
shield
assemblies.
(d)
NOTE
Be sure load wavy spring washer (s) are not
Note their
lost during motor disassembly.
position for use in reassembly.
Pull or carefully drive bearings
off of rotor assembly.
(e)
Retain wavy spring washer(s) for
use at reassembly if
not damaged.
Examine rotor, stator and
shafts for nicks,
gouges
(f)
deformations, and evidence
of overheating.
Dress high metal defects in shafts with a fine file or
(g)
stone.
If damage exceeds repairable limits, replace
motor.
Coat shaft surfaces of rotor with oil (MIL-L-2104,
(h)
They
Grade 20) and slide bearings on shaft ends.
should seat against shoulders at the inner ends of
shaft.
Coat
the
bearing
cavity
of
end
shield
assemblies
with
(i)
oil.
Coat
wavy
spring
washer(s)
with
oil
(MIL-L-2104,
Grade
(j)
20).
Carefully slip end shield assemblies stator and cable
(k)
assembly and shaft and rotor assembly back together.
lake care that wavy spring washer(s) and match marks
are in their original position.
Place four thru bolts thru motor assembly and secure
(l)
Check for freedom of
with four nuts and lock washers.
There should
rotation by turning motor shaft by hand.
be no drag or binding.
Change 1
5-22.2
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