TM 9-4120-407-14
3-34. EVAPORATOR FANS AND MOTORS TESTING AND REPLACEMENT. (Cont)
(6) Note mounting location of collar assembly (1) Figure 3-53 and remove four screws (2), flat washers
(3), collar assembly (1), and inlet bell (4).
Figure 3-53. Inlet Bell
b. Testing.
NOTE
Testing is typical of both motors.
(1) Use a multimeter set on lowest OHMS scale to check continuity between pins A and B, A and C
and B and C in connector. If there is no continuity between any pair of pins, the motor winding is
open. Replace motor.
(2) Use a multimeter set on lowest OHMS scale to check for continuity between each pin in connector
(A, B, and C) and the motor housing. If there is continuity between any pin and motor housing,
the motor winding is shorted. Replace motor.
(3) Replace motor if defective.
3-122
