Replace/Repair Fan, Ventilating (Supply Fans 1 and 2). (FIGURE 4-3)

TM 55-1905-223-24-17

4-13.

Replace/Repair Fan, Ventilating (Supply Fans 1 and 2). (FIGURE 4-3)

This task covers:

a. Removal

b. Disassembly

c. Repair

d. Assembly

e. Replacement

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's

Circuit breaker switched OFF,

power panel locked and tagged

Tool kit, electrician's

"Out of Service - Do Not

Operate."

Materials/Parts

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

operations and equipment location.

Warning tags, Item 1, Appendix C

Ventilating fan P/N 65-35-AVP3

Axial fan impeller P/N 656503500

REMOVAL

WARNING

Make sure electrical power is OFF to avoid personal injury.

a. Turn electrical power OFF.

b. Tag and disconnect electrical wiring to the fan.

Remove mounting hardware (2, 3) and (13, 14) from each end of the fan (1). This will disconnect

the fan from the bell inlet (23) and companion flange (12) at each end of the fan. The fan will be

disconnected from deck when mounting hardware (13, 14) are removed.

d. Remove the fan (1).

DISASSEMBLY

a. With the fan unit removed, disconnect vane section (15) from fan housing (22) by removing

mounting hardware (4, 10).

b. Remove vibration isolator (11) from vane section (15).

Remove hub screws (9) and remove hub cover (8).

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