TM 9-4120-371-14
NOTE
If all of the above inspections and tests are satisfactory, but the motor will will still not
operate properly, notify direct support maintenance, who may desire to make further tests
before the motor is removed.
b. Fan inspection (Installed)
(1) Check fan for dents, bent or loose fan blades, and that hub is securely attached. Replace it damaged.
(2) Check inlet bells for dents or any distortion that would cause interference with fans. Replace if
damaged.
c. Removal
(1) Using screwdriver and wrench, remove six
screws and lock nuts from handle and handle
enclosure on right side of unit.
(2) Remove handle and enclosure.
opening, rotate fan and locate the two setscrew
access notches through fan blades.
(4) Using special tool, 6 inch (15.2 cm) long
arm hex "L" type key (allen wrench), loosen two
setscrews until they are flush with outside of hub.
(5) Note position of motor junction box for
reassembly.
(6) Mark motor and motor mounting plate for
alinement at reassembly.
Take care that hardware does not
drop down into unit.
(7) Using screwdriver, remove six screws and
flat washers from motor mounting plate.
(8) Using wrench, remove four nuts from top of
motor mounting flange.
The following steps require two
people.
(9) Lift motor high enough to gain access to
mounting plate hardware.