Replace/Repair Motor and Pump Assembly. (FIGURE 2-12)

TM 55-1905-223-24-7

2-18.

Replace/Repair Motor and Pump Assembly. (FIGURE 2-12)

This task covers: a. Removal,

b. Repair,

c. Replacement.

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's,

RO desalinator shut down. Refer

to TM 55-1905-223-10.

RO desalinator tagged "Out of

Materials/Parts

Service, Do Not Operate."

High pressure hose assembly,

P/N 7392

Nonmetallic hose, P/N PVTBF075

REMOVAL

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

maintenance.

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

(1) from main frame assembly (3).

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 motor and pump assembly (6, FIGURE 2-12, Sheet 3), disconnect outlet high pressure hose assembly (23)

male hose adapter (4) from RO module No. 1.

e. Disconnect and remove inlet nonmetallic hose (13) and hose clamp from micron filter No. 1.

f. Remove access cover (24) on alternating current (ac) motor (1) by removing four screws (25) to gain access to

wiring terminal box (26).

g. On inside of wiring terminal box (26), tag and disconnect red, black, and white power cable leads.

h. Disassemble outlet conduit elbow (11) and outlet conduit (12), and pull power cable from ac motor (1) terminal

box (26).

i. Replace ac motor (1) access cover (24) on terminal box (26) and secure with four screws. This action will protect

ac motor wiring.

2-48