TM 10-4610-241-24
TO 40W4-13-42
3-44. HIGH PRESSURE PUMP (R.O. PUMP) REPAIR (MODELS WPES-10, WPES-20 AND WPES-30) -
continued.
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
Install disks (39), springs (38 and 37), putting smaller spring (37) inside larger spring
(38), valve guides (36) and screws (35) on valve seats (40). Torque screws to 25 pound/foot.
Install disks (23), springs (22), valve guides (21) and screws (20) on valve seats (24). Torque screws to 25
pounds/foot.
Lubricate packing ( 19) and position on caps ( 18). Install caps (with packing), plate (17) and screws (16).
Torque screws to 80 pounds/foot in sequence as illustrated.
Lubricate preformed packing (32) and position on stuffing boxes (3 1).
Install stuffing boxes (3 1) and plate (30) on fluid cylinder (15) and secure with eight screws (29). Torque
screws to 40 pounds/foot in sequence as illustrated.
NOTE
Packing bushing (34) is smaller than packing bushing (27).
Insert packing bushings (34), flat side in, two packings (33), concave side in, and packing bushings (27),
flat side out, in stuffing boxes (3 1). Tap lightly with a soft mallet to insure proper seating.
WARNING
Plungers are coated with ceramic material that could brake or flake off if not handled
carefully.
Insert plungers (25) in stuffing boxes (31). Then install gland nuts (26) fingertight.
NOTE
Gland nut will be further tightened during installation of pump.
If removed, install studs (43), plugs (42 and 41), nuts (12) and retainers (28).
Position fluid cylinder (15) on power frame (44) and install two nuts (14). Torque nuts to 130 pounds/foot.
NOTE
Rotating pump shaft will move crosshead in and out of power frame.
Rotate crankshaft for best position of crossheads (13) and connect plungers (25) to crossheads with nuts
( 12). Torque nuts to 20 pounds/foot, holding crosshead with a wrench to keep it from turning.
If liquid head was removed with pump in place, reconnect all water lines.
3-250 Change 1
