TM9-4120-400-14
5-8.
Remove the end shields carefully to avoid damaging wires. Wires maybe left in place if
care is taken to avoid damaging them.
NOTE
Be sure bad spring (9) and washers (10) are not lost during motor disassembly. Note their
positions for use in reassembly.
(4) Remove end shields (4 and 5).
(5) Carefully slide rotor (11) out of stator (3) housing.
(6) Press out or carefully drive bearings (12) out of end shields and stator housing. Retain load spring (9)
and washers for use at reassembly, if not damaged.
(7) Examine rotor (11), stator (3), and shafts for nicks, gouges, deformations, and evidence of
overheating.
(8) Dress high metal defects in shafts with a fine file or stone. If damage exceeds repairable limits, replace
motor.
(9) Coat shaft surfaces of rotor(11 ) with oil (MIL-L-2104, Grade .20) and slide bearings(12) on shaft ends.
.
They should seat against shoulders at the inner ends of shaft.
(10) Coat bearing cavity of end shields (4 and 5) and stator housing with oil and carefully slide rotor(11)
into stator (3) until bearings (12) are seated.
(11) Work end shields onto shaft until bore fits over end of stator. Keep the matchmark made during
disassembly in alignment.
(12) Place four thtu bolts (6), lock washers (7), and square nuts (8) thru motor assembly. Finger tighten.
(13) Tap around both end shields with a plastic or rawhide mallet while tightening thru bolts (6). Tighten in
alternating sequence until all thru bolts are equally tightened. Check motor for freedom of rotation by
turning motor shaft by hand. There should be no drag or binding.
3. Motor Assembly, IMC Magnetics Corp., Single Phase Motor, Model BC5320.
a. To replace connector (1):
(1) Loosen cable clamp (2).
(3) Remove old connector (1).
(4) See wiring diagram figure 4-4 and tags and solder leads to new connector (1). Remove tags.
(5) Secure cable clamp (2).
5-20