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Servicing the Fluid Section
Use the following procedures to service the valves and repack
the fluid section.
1. Using a Phillips screwdriver, remove the four front cover
screws. Remove the front cover.
2. Start the engine (refer to the procedures in the Operation
section of this manual). Turn the pressure control knob
clockwise to its maximum pressure setting.
3. Toggle the sprayer ON/OFF switch between the ON and
OFF positions in short bursts until the slider assembly and
piston rod stop at the bottom of their stroke (in their lowest
position).
4. Turn off the engine and perform the Pressure Relief
Procedure.
Before proceeding, follow the Pressure Relief
Procedure outlined previously in this manual.
additionally, follow all other warnings to reduce the
risk of an injection injury, injury from moving parts
or electric shock.
Servicing the valves
The design of the fluid section
allows access to the inlet valve
and seat as well as the outlet
valve and seat without completely
disassembling the fluid section. It
is possible that the valves may not
seat properly because of debris
stuck in the inlet valve seat or
outlet valve seat. Use the following
instructions to clean the valves and
reverse or replace the seats.
NOTE: Keep the sprayer in
the upright position for
this procedure.
1. Using a wrench, loosen and remove the inlet valve
housing from the fluid section housing.
2. Clean out any debris in the inlet valve housing and
examine the valve housing and seat. If the inlet valve
seat is damaged, reverse the seat to the unused side or
replace the seat.
NOTE: If the inlet valve seat is reversed or replaced, the
inlet valve ball must be replaced.
3. Using a 3/8" hex wrench, loosen and remove the outlet
valve retainer from the piston rod.
NOTE: always service
the outlet valve
with the piston
rod attached to
the pump. This
will prevent the
piston rod from
rotating during
disassembly of
the outlet valve.
4. Clean out any debris
and examine the outlet
valve retainer and seat.
If the outlet valve seat is
damaged, reverse to the unused side or replace the seat.
NOTE: If the outlet valve seat is reversed or replaced,
the outlet valve ball must be replaced.
5. Remove, clean, and inspect the outlet cage and outlet
valve ball. Replace if they are worn or damaged.
6. Reassemble the valves by reversing the steps above.
© Titan Tool Inc. All rights reserved.
Fluid Section
Housing
Piston Bushing
Inlet Cage
Inlet Valve Ball
Inlet Valve Seal
Inlet Valve Seat
Teflon O-Ring
Inlet Valve
Housing
PL1800M
PL2800M
Piston Rod
Upper seal
Upper cage
Outlet valve
ball
Lower seal
Outlet valve
seat
Outlet valve
retainer
Repacking the Fluid Section
1. Remove the foot valve assembly using the steps in the
"Servicing the Valves" procedure above.
NOTE: The outlet valve does not need to be
disassembled from the piston rod for this
procedure.
2. Using 3/8" a hex wrench, loosen and remove the two
pump block mounting screws.
3. Pull the pump block down approximately 1/2" from the
gear box housing.
4. Slide the pump block and piston rod forward until the
piston rod is out of the T-slot on the slider assembly.
5. Slide the piston rod out through the bottom of the pump
block
6. Loosen and remove the retainer nut and piston guide from
the pump block.
7. Remove the upper and lower packings from the pump block.
8. Clean the pump block.
9. Locate the new upper and lower packings and pack the
areas between the packing lips with grease. Lubricate the
o-rings on the exterior of the packings with grease.
10. Inspect the piston rod for wear and replace if necessary.
11. Insert the upper packing into the top of the pump block
with the raised lip on the packing facing down.
12. Insert the piston guide into the retainer nut. Thread the
retainer nut into the pump block until it is hand tight.
13. Pre-form the lower packing using the lower packing sizing
tool (included in the repacking kit).
14a. PL1800M - Install lower packings partially into the bottom
of the pump block with raised lip and the O-ring facing up.
14b. PL2800M - Insert the lower packing partially into the
bottom of the pump block so that the side that has the
o-ring closest to the face of the packing faces up.
PL1800M/PL2800M
Install upper packing
Install lower packings
with raised lip
with raised lip and
facing down.
O-ring facing up.
Raised Lip
Raised Lip
13
Retainer Nut
Piston Guide
Upper Packing
Assembly
Pump Manifold
Pump
Manifold
Mounting
Screw
PL1800M
Lower Packing
Assembly
Piston Rod
PL1800M
PL2800M
Install lower packing
with large beveled
edge facing up.
Large Beveled Edge
O-Ring
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