NOTE: If you are using block fillers, mastics or other
similar materials, leave the filter out.
Cleaning the Intake Screen
1. Remove the intake
screen and clean with a
solvent appropriate to the
type of material being
used.
Servicing the Fluid Section
Servicing the fluid section includes replacing the T-lip
packings, the piston, and valve parts that show signs of wear.
NOTE: If any parts are difficult to disassemble, soak them
in an appropriate solvent until the paint softens.
Removing the Fluid Section
1. Using a flat blade screwdriver, pry
the retaining ring out of the
bottom of the inlet valve housing
and remove the suction set
assembly.
2. Unscrew the fluid hose from the
fluid section assembly.
3. Loosen and turn the return line
fitting away from the fluid section
assembly.
4. Unscrew the 6 screws holding the
cover to the front of the pump
housing and remove the cover.
5. Pull the retaining clip from the
yoke and pin.
6. Push the pin out of the piston and
yoke. Use the short end of a hex
wrench if necessary.
7. Loosen the lock nut at the top of
the fluid section assembly.
8. Unscrew the fluid section
assembly from the pump.
Maintaining the T-lip Packings
Removing the T-lip Packings
1. Place the wrench flats of the inlet valve housing into a vise
and unscrew the fluid section from the inlet valve housing.
2. Unscrew the packing nut from the fluid section.
NOTE: When removing the piston, keep the piston
from falling or the piston may be damaged.
3. Push the piston out through
the lower end of the fluid
section. Tap the top of the
piston with a rubber mallet if
necessary.
4. Remove the upper and
lower spacers from the fluid
section.
5. Push the T-lip packings out
of the fluid section with a
screwdriver. To push out
the upper seal, insert the
screwdriver through the
lower end of the fluid
section. To push out the
lower seal, insert the
screwdriver through the upper end of the fluid section.
NOTE: When removing the T-lip packings, be careful
not to scrape or gouge the inside surface of
the fluid section with the screwdriver.
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Replacing the T-lip Packings
NOTE: For maximum lower T-lip packing life, use a
Suction Set
Intake Screen
1. Apply a light coat of household oil to the new lower T-lip
2. Turn the T-lip packing inside the fluid
3. Push the lower T-lip packing as far into
4. Insert the lower spacer into the fluid
5. Apply a light coat of household oil to the
Inlet Valve
Housing
Retaining
Ring
6. Thread the packing nut into the fluid section to push the
7. Insert the upper
Yoke
8. Push the upper spacer
Pin
9. Screw the packing nut
Maintaining the Valves
Replacing the Piston and Worn Parts of the Outlet Valve
Retaining Clip
1. Turn the piston upside down and use a hex wrench to
2. Cover the open end of the piston and turn the piston right-
3. Insert a new outlet ball guide into
Upper Spacer
4. Insert a new outlet ball into the
Upper T-lip
Packing
5. Check the outlet ball seat for
Fluid Section
Cylinder
Lower T-lip
Packing
Lower Spacer
6. Apply an appropriate thread-locking compound to the
NOTE: Do not put the new piston into a vise. Putting
7
packing guide tool (see fluid section parts list
for part number) to insert the lower T-lip
packing into the cylinder. If you do not have a
packing guide tool, follow steps 1 – 2 of the
procedure below.
packing and insert it edge-first into the lower end of the
fluid section.
section cylinder so that the springs of the
T-lip packing face into the cylinder. To do
this, hold the lower edge of the T-lip
packing in place while pressing the upper
edge further into the cylinder.
the fluid section as it will go.
section.
new upper T-lip packing and place it into the upper end of
the fluid section. Position the T-lip packing so that it is
level and the springs of the T-lip packing face into the
cylinder.
upper T-lip packing farther into the cylinder, then remove
the packing nut.
spacer into the fluid
section.
as far into the fluid
section as it will go.
into the fluid section.
Torque to 25-30 ft./lbs.
remove the piston seat retainer from the lower end of the
piston.
side up again to remove the outlet ball seat and outlet ball.
the new piston. The open end of
the ball guide should face the
open end of the piston. Use the
head of a long nail or screw to
seat the ball guide past the
threads inside the piston if
necessary.
outlet ball guide.
wear. If both sides are worn,
insert a new ball seat into the
piston on top of the ball. If only
one side of the ball seat is worn,
insert it into the piston with the
worn side facing away from the
ball.
threads of the piston seat retainer.
the piston into a vise may damage the piston.
Packing Nut
Upper Spacer
Upper T-lip Packing
Fluid Section
Cylidner
Piston
Outlet Ball
Guide
Outlet Ball
Outlet Ball
Seat
Piston Seat
Retainer
English