Replace Axial Pistons Pump.

TM 55-1905-223-24-7

2-20. Replace Axial Pistons Pump.

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

Motor oil, Item 2, Appendix C

Axial pistons pump P/N D1OSS6

Funnel, Item 3, Appendix C

REMOVAL

a. Close appropriate inlet feedwater gate valve (2, FIGURE 2-14, Sheet 1) for unit.

b. On left side of RO desalinator unit, remove ten machine screws (2, FIGURE 2-14, Sheet 2) and remove louvered

panel (1) from unit.

On main frame assembly (3) remove element machine screws (4) from angle brackets (5, 7, and 8) and remove pulley

guard (6) from main frame assembly.

d. Loosen hose clamp (11, FIGURE 2-14, Sheet 3) and remove nonmetallic hose (12) and hose clamp (11) from hose

elbow (17).

e. Remove reducer bushing (13) with nipple and hose tee (18) from pump inlet port.

Remove high pressure hose assembly (1) female adapter end from hose elbow (19).

g. Remove reducer bushing (14) with hose elbow (19) attached from pump outlet port.

h. Loosen four hexagon nuts (8) on adjustable base (2) that axial pistons pump (16) rests on

Turn tension adjustment (10) counterclockwise until slots contact threaded studs.

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