18
14) Install a new shaft valve ball.
15) Inspect the shaft valve seat for wear. If one side of
the seat is still new, install it with the good side facing
towards the ball.
Note: Do not put piston into a vise. Putting the piston
into a vise may cause damage.
16) Apply blue locktite to the shaft valve hex nut threads
and thread into shaft. Torque to 12 ft/lbs.
17) Apply a light coat of oil to the piston and insert it,
small end first, into the lower end of the fluid section
until it seats. Tap the bottom of the piston gently with
a rubber mallet if necessary.
FOOT VALVE MAINTAINENCE:
18) Remove the o-ring from the foot valve housing.
19) Cover the top of the foot valve housing and turn it
upside down to remove the ball stop, ball guide, ball,
seat, and seat seal.
20) Install a new seat seal into the housing.
Do not reuse
the old seal.
21) Inspect the foot valve seat for wear. If one side of the
seat is still new, install it with the good side facing
towards the ball.
22) Install a new foot valve ball, ball guide, stop plate,
and a new o-ring
(do not reuse the old o-ring).
23) Hold the foot valve in a vise (contacting on the
wrench flats) and screw the fluid section into the foot
valve. Torque to 85 - 90 ft/lbs.
INSTALLATION OF FLUID PUMP:
24) Turn the locknut on the fluid section until it reaches the
bottom of the threads. Thread the fluid section into the
main pump housing. Rotate the fluid pump to align
the hole in the piston shaft with the holes in the yoke.
25) Insert the pin through the yoke and piston. Snap the
retaining clip around the pin and yoke.
26) Screw the fluid section into the main pump housing as
far as it will go, then unscrew it slightly so that the
outlet hose fitting will align with the connection hose.
27) Firmly tighten the locknut at the top of the fluid section
against the main pump housing. Tighten the return
line fitting back to its original position.
28) Fill the packing nut with packing lubricating oil.
29) Install the front cover, connection hose, and the
suction system.
Piston
Yoke
Pin
Retaining clip
Torx screw
Front cover plate
Locknut
Packing nut
Upper spacer
Upper packing
Oulet
fitting
Cylinder
Lower packing
Lower spacer
S.V. ball guide
S.V. ball
S.V. seat
S.V. hex nut
O-ring
F.V. ball stop
F.V. ball guide
F.V. ball
F.V. seat
Seat seal
F.V. housing
Suction system
complete
MAINTENANCE & SERVICE (DC-3000)
main pump
housing
PISTON MAINTAINENCE:
12) Turn the piston upside down and use a hex wrench to
remove the shaft valve hex nut from the lower end of
the piston.
13) Cover the open end of the piston and turn the piston
right-side up again to remove the shaft valve ball and
seat. Inspect the piston for wear. Install a new ball
guide,
do not reuse the old ball guide as it is also
the seat seal. Use the head of a long nail or screw to
seat the ball guide past the threads inside the piston.
Wiring diagram, DC-3000
