Repair Fan, Ventilating (Supply Fan #3) - TM-55-1905-223-24-170093

TM 55-1905-223-24-17

2-24. Repair Fan, Ventilating (Supply Fan #3). (FIGURE 2-14)

This task covers:

a. Repair

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's,

Alternating current motor removed

Tool kit, electrician's,

Puller, 5120-00-516-3i20

Hydraulic Press, PN 2009-13

Materials/Parts

Bearings PN 416821-2D

REPAIR

Repair consists of replacing the motor bearings.

Disassemble motor (1) as follows:

(1)

Remove woodruff key (15) from shaft spline.

(2)

Remove bolt (17) and remove back end bracket (11) and dirt deflector (14).

(3)

Remove fan cover bolt (7) and remove fan cover (2). Remove grease entry tube (4) from bracket (5).

(4)

Remove fan clamp (24) and remove outer fan (3) from motor shaft (16).

(5)

Remove front end bracket bolt (6) and remove front end bracket (5). Remove washer (23).

(6)

Remove the shaft (16) and bearings (12, 22) assembly from the motor.

(7)

Make the following measurements and records:

(a)

Measure the distance from back bearing (12) to the impeller end of the shaft (16).

(b)

Measure the distance from front bearing (22) to the outer fan (3) end of the shaft (16).

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