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Repair
30 311594Z
Motor/Gear Reducer
Motor Removal
1. Relieve pressure, page 9.
2. Shut off electrical power to the unit.
NOTE: See F
IG
. 20 for all NEMA 182/184 TC Frame
electric motors. See F
IG
. 21 for IEC 112M/B5 and
100L/B5 Frame electric motors.
3. While one person supports the motor (19), remove
the screws (37). Pull the motor away from the gear
reducer.
NOTE: If the motor does not come off the gear reducer
easily, stop immediately and go to Motor/Coupler is
Difficult to Remove, page 31.
4. See F
IG
. 22. Loosen both setscrews (31). Insert the
coupler removal tool (T) into the coupler (28). Turn
nut clockwise until tight, then pull the coupler off the
gear reducer input shaft (105) by turning hex-head
screw (HS) clockwise.
NOTE: A faint clicking may be heard while the motor is
running. This is normal and is due to necessary clear-
ances between the coupler (28), motor shaft, and motor
key. If the intensity increases significantly over time, it
could indicate the coupler is wearing and should be
replaced. Do not open the gear reducer. Opening the
gear reducer voids the warranty. The gear reducer is
not field serviceable beyond the maintenance recom-
mended in this manual.
F
IG
. 20. All NEMA 182/184 TC Frame Electric Motors
ti8726b
19
37
31
20
28
31
1
Motor Rotation
(counter-clockwise as viewed from fan end)
F
IG
. 21. IEC 112M/B5 and 100L/B5 Frame Electric
Motors
ti9007b
19
37
31
20
28
MS
MA
1
Motor Rotation
(counter-clockwise as viewed from fan end)