TM 5-4310-384-13
DISASSEMBLY.
WARNING
Disconnect main power and turn compressor off before performing maintenance procedures.
NOTE
Before beginning disassembly, slowly rotate motor shaft by hand to check out bearings. If you notice any
rough spots or binding, bearings are bad and must be replaced. Bearings are sealed and cannot be
visually inspected.
a.
Mark end plates (1 and 2).
b.
Remove four thru bolts (3) and nuts (4).
c.
Remove front endplate (1).
d.
Remove rotor assembly (5).
e.
Remove bearing guards (6), if present. (Guards are used as shims for adjusting shaft end play.)
f.
Using a suitable bearing puller, remove bearings (7) if any binding or rough spots were noticed prior to
disassembly.
g.
Remove rotating assembly (8).
h.
Remove rear end plate (2).
i.
Remove thrust washer (9).
j.
Remove stationary switch (10).
k.
Remove capacitor cover (11).
WARNING
Before removing capacitor, short it out by placing screwdriver across terminals of the capacitor. Failure to
do this could result in personal injury.
I.
Tag wires and remove capacitors (12 and 13), and padding.
INSPECTION.
a.
Inspect leads and windings (14) of stator assembly (15) for evidence of cracked or burned insulation. Replace if
leads or windings are damaged.
b.
Inspect rotor and shaft assembly (5) for loose or damaged fan. If damaged, replace motor.
c.
Remove any small nicks on keyway with file.
d.
Inspect bearings (7) for wear or loose roller cone. Replace as necessary.
e.
Inspect endplates (1 and 2) for cracks or plugged vent slots.
f.
Inspect bearing guards (6) and thrust washer (9) for cracks or bends. Replace as necessary.
g.
Inspect and test the voltage in the capacitors (12 and 13). Refer to paragraph 3-33.
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