Repair Fan, Ventilating (Exhaust Fan #3)

TM 55-1905-223-24-17

3-23. Repair Fan, Ventilating (Exhaust Fan #3). (FIGURE 3-14)

This task covers:

a. Repair

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's,

Circuit breaker switched OFF, power

panel locked and tagged "Out of

Tool kit, electrician's,

Service - Do Not Operate."

Ventilating fan removed (para. 2-28).

See TM 55-1905-223-10 for HVAC systems

Materials/Parts

operation and equipment.

Tag, Item 1, Appendix C

Crocus cloth (fine),

Impeller P/N 783076-51

REPAIR

WARNING

Make sure electrical power is OFF to avoid personal injury.

a. Remove impeller (3) from shaft of motor (2).

b. Check impeller (3) for bent or broken blades. Replace as required.

Using drift pin, remove bushing (4) from impeller.

d. Sand the end of the motor shaft lightly with fine crocus cloth to remove dirt, grease, or corrosion.

e. Install bushing (4) in impeller (3).

Install impeller onto shaft of motor (2).

g. Install ventilating fan (1) (paragraph 2-29).

h. Operational check:

(1)

Turn electrical power ON.

(2)

Start and run fan to check operation.

(3)

Remove "Out of Service" tag from circuit.

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