Repair Alternating Current Motor - TM-55-1905-223-24-120080

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REPAIR

TM-55-1905-223-24-12 Fire Pump System for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 4-2. Alternating Current Motor Assembly.

TM 55-1905-223-24-12

4-14. Repair Alternating Current Motor. (FIGURE 4-2)

This task covers: a. Disassembly, b. Repair, c. Assembly.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's,

Refer to the following paragraph

in this maintenance manual.

Bearing puller P/N 5120-00-288-7710

Alternating current motor removed (para.

Material/Parts

Thrust washer bearing P/N 40F76Y56-72014

Annular ball bearing P/N 40F76Y56-72054

Machine key P/N 40F76Y56-70660

Shouldered shaft P/N 40F76Y56-70510

Rotor P/N 40F76Y56-70520

Stator P/N 40F76Y56-71000

Thrust washer bearing P/N 40F76Y56-72013

Annular ball bearing P/N40F76Y56-72053

Casket P/N 40F76Y56-70930

Cleaning solvent, Item 2, Appendix C

Emery cloth, Item 11, Appendix C

Non-metallic brush, Item 7, Appendix C

DISASSEMBLY

a. Remove four machine bolts (8) from the shaft end bearing housing (7).

b. Remove shaft end bearing housing (7) along with the air deflector (4).

c. Remove four hex head machine bolts (9) that hold the air deflector (4)

to the shaft end bearing housing (7).

d. Remove ball bearing using bearing puller (6) and bearing washer (5) from

the shaft.

e. Remove machine key (3) from the shaft.

f. Remove four machine bolts (23) from the bearing housing (22) opposite

the shaft end.

g. Remove housing (22) and air deflector (19).

h. Remove four machine bolts (26) from air deflector (19) and remove

the deflector.

4-15