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TM 5-4120-364-13
(2) Inspect.
Inspect fan motor for loose wire connections, frayed or
b u r n e d wires or other evidence of damage which would impair serviceability.
( 3 ) T e s t ,  C h e c k  continuity o f rotor windings for open windings or wind-
i n g s shorted to motor frame, If any of t h e s e c o n d i t i o n s a r e f o u n d , o r i f m o t o r b i n d s
i n d i c a t i n g  defective  bearings,  replace motor.
(4) Replace.
( a ) Position replacement fan motor (9) on base (8) and secure with
k n i t s (7), lockwashers (6) and nuts (5). Do not tighten nuts (5) at this time.
( b ) Connect ground wire (3) to motor capacitor mounting screw and to
frame.
( c ) P l a c e f a n h o u s i n g s ( 2 5 , f i g u r e 3-11) over rotor shaft on each side
o f rotor and secure with screws (9, 2 0 , 22), washers (7, 17, 18) and nuts (6, 16).
( d ) Match direction of rotation arrows on fans with arrows on fan
h o u s i n g s and slide fans on to motor shaft. Position fans in the housings so that they
a r e centeerd in the housings. T i g h t e n s e t s c r e w s ( 2 6 ) i n f a n s t o s e c u r e f a n s t o m o t o r
s h a f t . Tighten motor mounting nuts (5, figure 3-12) to secure rotor to frame and base.
(e) Connect motor leads to terminal board. Refer to electrical wiring
d i a g r a m figure 3-2.
(f) Check direction of rotation of the fan motor. The condenser fan
m o t o r must be wired for counterclockwise rotation. Direction is determined by looking
a t motor terminal end. Replacement motors are shipped wired for clockwise rotation.
T o r e v e r s e d i r e c t i o n o f r o t a t i o n , r e v e r s e the red and black leads inside motor junc-
t i o n box. After the motor has been installed and wired, energize unit to verify pro-
p e r rotation. Direction of rotation arrows are marked on both the fans and the fan
housings.
( g ) Attach rings (15, figure 3-11) to housings (25) with screws (13)
and washers (14).
( h ) Connect pipe (5) to hose (4) with clamp (2).
( i ) R e f e r t o f i g u r e 3 - 9 a n d a t t a c h f r o n t , r e a r and end panels by turn-
i n g fasteners (8) one-quarter turn clockwise and installing screws (22) and washers
(23).
g . Refrigerant Sight Glass. Organizational maintenance of the sight glass is
l i m i t e d to checking the refrigerant through the sight glass. The refrigerant should
appear as a clear blue liquid. (Check color code on sight glass cap). If bubbling,
fogging, or a pink color appears, report the condition to direct support maintenance.
CONDENSER COIL SECTION.
3-12.
a. Covers, Panels and Frame.
(1) Removal.  R e m o v e the covers and panels by turning the fasteners (9,
figure 313) one-quarter turn counterclockwise.
3-25

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