TM 10-4610-239-24
TM 08580B-24/3
INSPECTION.
a.
Inspect leads and windings of stator assembly for evidence of cracked or burned insulation. Replace as required.
b.
Inspect rotor assembly for loose or burned conducting bars. Replace as required.
c.
Inspect bearings for wear. Replace as required.
d.
Inspect end plates for cracks. Replace as required.
e.
Inspect bushings for cracks or brittleness. Replace as required.
f.
Using multimeter set to OHMS X1 scale, connect test leads to pairs of motor leads in the following order: T1 and
T2, T1 and T3, T2 and T3.
g.
If multimeter indication is not 0 ohm for each pair of windings, replace stator.
h.
Set multimeter to OHMS X1000 scale. Connect one lead to stator housing. Connect other lead to each motor lead
in turn.
i. If multimeter indication is not infinity for each motor lead, replace stator.
ASSEMBLY.
a.
Pack two bearings (15) and (20) and use arbor press to install bearing (20) on fan end shaft of rotor (10).
b.
Install wavy washer (19) and flat washer (18) on fan end shaft of rotor (10).
c.
Position fan end plate (17). align marks on fan end plate (17) and stator (14) made during disassembly.
CAUTION
Wiring inside stator can be damaged by rotor or shift if rotor is not
installed carefully.
d.
Install bearing retainer plate (16) and press on bearing (15) on rotor (10).
e.
Align bearing retainer plate (16) with end plate (13) screw holes and install screws (12).
f.
Align marks on end plate and stator (14) made during disassembly and install four through-bolts (11).
g.
Position fan (9) and install setscrew (8).
h.
Position fan cover (7) and install four screws (6).
i.
Position conduit box (5) and install two screws (4).
j.
Position conduit box gasket (3) on conduit box cover (2) and install two screws (1).
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