REPLACEMENT - TM-55-1905-223-24-170105

TM 55-1905-223-24-17

a. Remove the motor (5, FIGURE 2-17) from panel (7) as follows:

(1)

Remove bolt, nut, and lockwasher assemblies (6).

(2)

Remove the motor (5).

b. The replacement procedures for motor bearings is the same as for Supply Fan #4.

Refer to repair

procedures in paragraph 2-26 and replace motor bearings.

c. Install the motor (5, FIGURE 2-17) on panel (7) mounting plate as follows:

(1)

Position motor on mounting plate.

(2)

Install mounting bolt, nut, and washer assemblies (6).

(3)

Tighten bolts firmly.

REPLACEMENT

a. Position fan and panel assembly in its mounting.

b. Connect electrical wiring to proper terminals on motor (5).

c. Install impeller (8) onto motor shaft. Tighten setscrew (10) firmly.

d. Install box guard (9) on panel (7) and install mounting bolts, flat-washers, lockwashers, and nuts (1, 2, 3,

4).

e. Make sure the impeller (8) is not touching the guard or panel.

f. Operational check:

(1)

Turn electrical power ON.

(2)

Start and run fan to check for proper operation.

(3)

Remove "Out of Service" tag from the circuit.

2-76