Repair Fan, Ventilating (Exhaust Fans #4 and #6).

TM 55-1905-223-24-17

3-24.

Repair Fan, Ventilating (Exhaust Fans #4 and #6).

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 weather cover, inlet

and outlet flange, and V-belt removed

Materials/Parts

Tag, Item 1, Appendix C

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

Fan sheave bushing P/N 725409-10

operation and equipment.

Machine key P/N 100500-01

P/N 100730-01

Shaft P/N 100914-01

Machine key P/N 100500-49

REPAIR

WARNING

Make sure electrical power is OFF to avoid personal injury.

a. Remove ventilating fan weather cover (1), inlet flange (4), and outlet flange (5) (paragraph 2-35).

b. Remove V-belt (13) (paragraph 2-35).

Replace machine key (12):

(1) Remove motor sheave (14) and machine key (12) from shaft of motor (15).

(2) Install new machine key (12) in motor shaft spline.

(3) Install motor sheave (14) on shaft of motor (15).

d. Replace straight shaft (8), flanged bearings (7), fan sheave bushing (10), and machine key (11):

(1) Remove inlet cone (3) from housing (6).

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