INSPECTION AND TESTING - TM-5-4120-374-130066

TM 5-4120-374-13

4-19. FAN MOTOR (CONT)

REMARKS

ACTION

LOCATION/lTEM

INSPECTION AND TESTING

RIGHT SIDE OF HOUSING

Disconnect input power source before performing this maintenance task.

a. Using a multimeter set on low ohms scale, check for continuity.

10. Fan Motor

b. Verify multimeter indicates low resistance across each pair of

leads.

c. Connect one multimeter lead to motor frame and second lead

to each of the motor leads.

d. Replace motor if there is NO resistance.

Repair electrical wiring as follows:

11. Fan Motor

(1) Remove insulation to expose 1/2 inch of bare wire on each

side of break.

(2) Twist the wire ends together and solder the splice.

(3) Cover the splice with PVC electrical tape, making certain

to cover all repaired areas.

12. Fan Motor

a. Connect electrical leads to motor capacitor and remove tags.

b. Connect electrical leads to fan motor and remove tags.

c. Place fan motor on motor mounting bracket.

d. Slide fan motor back against bulkhead.

a. Install condenser fan on fan motor shaft.

13. Condenser Fan

b. Tighten setscrew in condenser fan hub.

FRONT OF HOUSING

14. Circulating Fan

a. Carefully install circulating fan on fan motor shaft.

b. Tighten setscrew in circulating fan hub.

15. Blower Intake Ring a. Align holes in blower intake ring with holes in circulating fan

housing.

b. Secure blower intake ring with seven (7) screws.

a. Align holes in thermostat switch with holes in front panel.

16. Front Panel

b. Secure thermostat switch to front panel with two (2) screws.

c. Align holes in front panel with holes in housing.

d. Secure front panel with fourteen (14) screws.

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