3-39. HIGH PRESSURE PUMP (R.O. PUMP) MAINTENANCE.
This task consists of:
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Valve Seat Removal Tool (Appendix B, Section III, Item 2)
Gland Nut Adjustment Tool (Appendix B, Section III, Item 5 )
Cleaning Solvent (Appendix C, Section II, Item 28)
Lockwasher (4) - MS 35338143
O-ring (3) - 9410A14600M
Utex Packing (6) - 9300W000119
O-ring (3) - 9410A23100M
Gasket (1) - M103873D05
Gasket (1) - M103873D03
ROWPU shut down and power removed (TM 10-4610-240-10).
Oil drained from high pressure pump assembly (para 2-76)
Water drained (TM 10-4610-240-10).
General Safety Instructions:
Cleaning solvents used are toxic and flammable. Observe safety precautions when using this
material. See general warning page at front of this manual.
Remove nuts (20), screws (1), clamps (2) and gaskets (3).
As required, remove nipples (4) from pump assembly for installation on replacement pump.
Remove three screws (12) and washers (13). Thread screws in extra holes on sheave and tighten to remove
Remove sheave (14) and loosen setscrew (15).
Insert a screwdriver in split of hub (16) and tap lightly with a hammer to loosen hub. Remove hub and key