HIGH PRESSURE PUMP (R.O. PUMP) REPAIR (MODELS H-9518-1, H-9518-2, AND H-9518-3).
This task consists of:
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Rags, Wiping (Appendix C, Section II, Item 14)
Detergent (Appendix C, Section II, Item 5)
Tape, Anti-Seize (Appendix C, Section II, Item 19)
Lubricant, O-Ring (Appendix C, Section II, Item 11)
Lockwashers (TM 10-4610-241-24P)
O-Rings (TM 10-4610-241-24P)
Power Shut down (Power Source Manual)
Pump drained (TM 10-4610-241-10)
Electrical Cable removed (Paragraph 2-54)
Remove eight screws (1) and eight lockwashers (2) securing pump cover (3) to ROWPU. Remove pump
Remove the two screws (4), four flatwashers (5), two lockwashers (6) and two nuts (7) that secure the hose
clamp (8) to the bracket (9). Remove the hose clamp.
Remove bracket (9) from ROWPU frame by removing two screws (10), four flatwashers (11), two
lockwashers ( 12) and two nuts (13).
Remove low pressure hose ( 14) from cam-lock fitting ( 15) on the end of the pump (16).
Hold the nipple (17) on the pump and turn the fitting of the high pressure hose (18) counterclockwise.
Remove high pressure hose.
Remove the drain line ( 19) from the pump ( 16) by pushing on the fitting collar while gently pulling on the
Remove the four bolts (20) and the four washers (21) securing the pump assembly (16) to the motor (22).
The pump assembly must be supported as it is removed from the motor due to its weight
(60 lbs.). Two people are necessary.
Be sure to retain the rubber coupling spider (23), as it might fall out during disassembly.