Replace Alternating Current Motor.

TM 55-1905-223-24-7

2-19.

Replace Alternating Current Motor.

This task covers: a. Removal,

b. Replacement.

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's,

RO desalinator shut down. Refer

to TM 55-1905-223-10.

Standard puller, P/N ST 647

RO desalinator tagged "Out of Service,

Do Not Operate."

Materials/Parts

Alternating current motor, P/N M3611T

REMOVAL

Remove alternating current motor (high pressure pump).

a. Close appropriate inlet feedwater gate valve (2, FIGURE 2-12, Sheet 1) for RO desalinator unit under

maintenance.

b. On left side of RO desalinator unit, remove ten machine screws (2, FIGURE 2-12, Sheet 2) and remove louvered

panel (1) from unit.

c. On main frame assembly (3) remove eleven machine screws (4) from angle brackets (5, 7, and 8) and remove

pulley guard (6) from main frame assembly.

d. On alternating current motor (2, FIGURE 2-13) remove four screws (3) from motor terminal box (1) access cover

and remove cover.

e. Tag and disconnect red, black and white power cord leads from inside motor terminal box (1).

f. Disassemble outlet conduit elbow (8) and outlet conduit (9) from terminal box (1) and remove power cable.

g. Assemble outlet conduit (9) and outlet conduit elbow (8) to terminal box (1).

h. Replace access cover on ac motor terminal box (1) and secure with four screws (3).

i. Loosen four hexagon nuts (5) on adjustable base (6) that pump (4) rests on.

j. Turn tension adjustment (7) counterclockwise until slots contact threaded studs.

2-54