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(4)
(5)
tubing for brazing according to para-
graph 96.
Insert the system suction line into the
(6)
compressor suction connection and
secure compressor as shown by fig-
ure 28.
(7)
Slide the system discharge line over
TM 5-4120-259-15
the discharge connection of the com-
pressor.
Flow nitrogen through the system
and compressor during the brazing
operation as described in paragraph
96.
Evacuate and charge the system ac-
cording to paragraphs 95 and 97.
Section III. EVAPORATOR FAN MOTOR
100. General
The evaporator fan motor is a 1/3 horse-
power motor located in the upper or evapo-
rator portion of the air conditioning unit, and
drives the impellers of the evaporator fan
assembly to circulate air over the evaporator
tils and discharge it through the openings in
the front of the unit.
101. Evaporator Fan Motor
a. Testing and Removal. Test and remove
the evaporator fan motor as shown by figure
16.
b. Disassembly.
(1) Remove nuts
and through-bolts
which secure end shields b stator
frame. Remove right end plate from
the stator frame.
Note. Mark the end plates and stator
frame prior to diaaasembly to facilitate
matching of mating parts during reassem-
bly.
(2) Remove rotor assembly with left end
shield attached.
(3) Remove left end plate.
(4)
(5)
(6)
Remove the washers, bearings and
slingers from the shaft of the rotor
assembly.
Tag and disconnect the leads of the
stator assembly from the motor ther-
mal protector and connector and re-
place these items if necessary.
Replace stator assembly as necessary.
c. Cleaning, Inspection, and Repair.
(1)
(2)
(3)
(4)
Clean all metal parts with an ap-
proved cleaning solvent and dry
thoroughly with compressed air and
a clean cloth.
Rotate bearings and inspect for any
wear.
Inspect the rotor assembly for a bent
shaft. Replace a defective rotor.
Inspect all other parts for defects or
damage. Replace all unserviceable
parts.
d. Testing. Test the stator assembly for
short circuits as instructed in TM 5-764.
e. Reassembly. Reassemble motor in reverse
order of disassembly.
f. Installation. Install motor as shown by
figure 16.
Section IV. CONDENSER FAN MOTOR
102. General
The condenser fan motor is a 1.5 horse-
power motor located in the lower or condenser
portion of the air conditioning unit, and drives
the impellers of the condenser fan assembly to
circulate air over the condenser coils and dis-
charge it through the openings in the bottom
of the unit.
103. Condenser Fan Motor
a. On-Equipment Test.
(1)
(2)
Disconnect the leads from the con-
denser fan motor as described in
figure 17.
Test the condenser fan motor for
continuity and insulation resistance
as instructed in TM 5-764.
57
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