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

TM 55-1905-223-24-17

4-11. Replace/Repair Fan, Ventilating (Exhaust Fans 1 and 2). (FIGURE 4-1)

This task covers:

a. Removal

b. Disassembly

c. Repair

d. Assembly

e. Replcaement

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."

Tool kit, refrigeration and

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

air conditioning,

operation and equipment location.

Materials/Parts

Warning tags, Item 1, Appendix C

Ventilating fan P/N 65-35-AV03

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 plain hexnuts, lockwashers, and flat washers (2 and 13) and hexhead screws and flat

washers (3 and 12) from each end of the fan. This will disconnect the fan from the bell inlet (26) and

companion flange (14) at each end of the fan. The fan will also be disconnected from the mounting

feet (25) which hold the fan to the deck.

d. Remove the fan (1).

DISASSEMBLY

a. With the fan unit removed, disconnect outlet cone (15) from vane section (16) by removing plain

hexnut, lockwasher, and flat washer (11) and hexhead screw and flat washer (10).

4-18