Repair Fan, Ventilating (Supply Fan #6)

TM 55-1905-223-24-17

3-22. Repair Fan, Ventilating (Supply Fan #6). (FIGURE 3-13)

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. 2-27).

Electric motor and V-belt removed

Materials/Parts

Tag, Item 1, Appendix C

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

Fan impeller P/N 782952-00

operation and equipment.

Bearings P/N 716625-01

Straight shaft P/N 100206-04

REPAIR

WARNING

Make sure electrical power is OFF to avoid personal injury.

a. Replace fan impeller (3):

(1)

Loosen set screw holding impeller (3) onto shaft (10).

(2)

Slide impeller (3) from fan shaft (10).

(3)

Remove finger ring (4) from shaft (10).

(4)

Install finger ring (4) onto shaft (10).

(5)

Install new impeller onto fan shaft (10).

b. Replace unit ball bearings (9) and straight shaft (10).

(1)

Disassemble parts as follows:

(a) Remove impeller (3) and finger ring (4) (REPAIR, step d., above).

(b) Remove bolts and washers (8) and remove bearing cover (7) and gasket strip (6)

from inside fan drum (5).

3-51