TM 55-1520-240-23-10
13-13
DISASSEMBLE HEATER FAN (500702-5310) (AVIM)
(Continued)
13-13
10.
Remove lockwire, four screws (18), and four
washers (19).
11.
Remove motor (20) from housing (15).
11.1.
Inspect housing (15). There shall be no cracks.
There shall be no nicks or scratches deeper than
0.025 inch.
11.2.
Blend out scratches in housing (15) less than
0.025 inch deep. Use emery cloth (E123).
NOTE
Housing is magnesium.
11.3.
Inspect housing (15) for corrosion. Clean and
treat corrosion (Task 2-347).
11.4.
Touch up housing (15) as needed. Use epoxy
primer (E292.1) and poly paint (E285.2) (Task
2-350.1). Wear gloves (E184.1).
DISASSEMBLE MOTOR
12.
Remove retaining ring (21). Remove rotor (22)
from stator (23).
13.
Remove endbell (24) and loading washer (25)
from rotor (22).
13.1.
Inspect loading washer (25). Washer shall not be
cracked or crushed flat.
14.
Remove retaining ring (26) from stator (23).
15.
Remove bearing (27) from rotor (22) and bearing
(27) from stator (23). Inspect bearings (TM
55-1500-322-24).
16.
Inspect rotor (22). There shall be no sign of
rubbing against inside of stator (23). There shall
be no spalling of bearing surfaces of shaft (28).
FOLLOW-ON MAINTENANCE:
None
END OF TASK
13-62
