Replace/Repair Motor, Electric, Alternating Current (Supply Fan #4).

TM 55-1905-223-24-17

2-26. Replace/Repair Motor, Electric, Alternating Current (Supply Fan #4). (FIGURE 2-16)

This task covers:

a. Removal,

b. Repair,

c. Replacement.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's,

Circuit breaker switch OFF, power

panel locked and tagged "Out of

Tool kit, electrician's,

Service - Do Not Operate."

Puller 5120-00-516-3120

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

Hydraulic press PN 2009-13

operation and equipment location.

Materials/Parts

AC electric motor

P/N 355790Y606

Annular ball bearing P/N 203

Bearing P/N 205

Tag, Item 1, Appendix C

Grease, Item 2, Appendix C

WARNING

Make sure electrical power is OFF to avoid personal injury.

REMOVAL

a. Remove weather cover from fan assembly for access to motor (paragraph 2-25).

b. Tag and disconnect electrical wiring in motor terminal box (9, FIGURE 2-16).

c. Refer to paragraph 2-25 and FIGURE 2-15, and remove the motor as follows:

(1)

Loosen tension on V-belt. Remove belt from around motor pulley (3, FIGURE 2-15).

(2)

Use a puller and remove the motor pulley (3) and machine key (4).

(3)

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

(4)

Remove the motor (5) from the motor base (7).

2-71