TM 9-4120-371-14
The two setscrews MUST aline with the two flats on motor shaft.
(12) Aline setscrews with flats on motor shaft.
(13) Carefully slip fan up and tighten setscrews using special tool, 6 inch (15.2 cm) long arm hex "L" type
key (allen wrench).
(14) Position motor junction box the same as before. (See para 4-64 c. (5) above.)
(15) Using screwdriver, secure motor mounting plate to casing with six screws and flat washers.
Do not loosen setscrews far enough to allow them to slip off of flats.
(16) Using special tool, 6 inch (15.2 cm) long arm hex "L" type key (allen wrench), SLIGHTLY loosen two
setscrews in condenser fan hub.
(17) Position fan on shaft so that there is 0.03 to 0.06 inch (0.07 to 0.15 cm) clearance between the fan
and the inlet bell.
(18) Tighten setscrews.
(19) Spin fan by hand and check that there is still a 0.03 to 0.06 inch (0.07 to 0.15 cm) clearance
between fan and inlet bell. Adjust fan if necessary.
(20) Using screwdriver and wrench, install handle and enclosure using six screws and lock nuts.
Follow-on procedures: 1. Install conditioned air filter. (See para 4-34.)
2. Install rear panel. (See para 4-33.)
3. Install evaporator fan inlet bell and evaporator fan. (See para 463.)
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