9. Using a wrench, turn the jam
nut counterclockwise to loosen
it from the pump housing.
10. Turn the fluid section
counterclockwise to remove it
from the pump housing.
11. Place the fluid section cylinder
upright in a vise by clamping
on the wrench flats.
12. Loosen and remove the inlet
valve housing from the
cylinder.
13. Remove the inlet cage, inlet
valve ball, inlet valve seat, and
o-ring from the inlet valve.
14. Clean out any debris in the inlet valve housing and
examine the housing and the inlet valve seat. If the seat
is damaged, reverse to the unused side or replace the
seat.
15. Using a wrench, remove the upper seal retainer.
16. Slide the piston rod out through the bottom of the cylinder.
17. Inspect the piston rod for wear
and replace if necessary.
18. Remove the adapter ring and
upper packing assembly from
the top of the cylinder.
19. Remove the seal washer, lower
support ring and lower packing
assembly from the bottom of
the cylinder.
20. Remove the cylinder from the
vise.
21. Insert the connection pin
through the hole at the top of
the piston rod and clamp each
end of the connecting pin in the
vise. This will hold the piston
rod in position for disassembly.
22. Using a 3/8” hex wrench, loosen
and remove the outlet valve
retainer from the piston rod.
23. Remove the outlet valve seal,
outlet cage, outlet valve ball,
nylon washer, and outlet valve
seat from the outlet valve
retainer.
24. Clean out any debris and
examine the retainer and outlet
valve seat. If the seat is
damaged, reverse to the unused
side or replace the seat.
25. Clean and inspect the outlet cage and outlet valve ball.
Replace if they are worn or damaged.
NOTE: Do not clamp the
piston rod directly in
the vise. Damage to
the piston rod will
occur.
NOTE: Be careful not to
scratch, score, or
otherwise damage the
cylinder during
removal of the packing
assemblies.
