Servicing the Fluid Section
Use the following procedures to service the valves and repack
the fluid section. Perform the following steps before
performing any maintenance on the fluid section.
1. Loosen and remove the four front cover screws. Remove
the front cover.
2. Stop the sprayer at the top of its stroke so that the piston
is in its highest position. Turn off and unplug the pump.
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. Always
unplug the sprayer before servicing!
3. Unscrew the return hose assembly from the pump block.
4. Remove the retaining clip that holds the suction set in the
foot valve. Pull the suction set out of the foot valve.
5. Tilt the pump back for easy access to the fluid section.
Servicing the Valves
The design of Titan's fluid section
allows access to the foot 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 foot valve seat or outlet
valve seat. Use the following
instructions to clean the valves and
reverse or replace the seats.
1. Using a wrench, loosen and
remove the foot valve housing
from the pump block.
2. Clean out any debris in the foot valve housing and
examine the valve housing and seat.. If the seat is
damaged, reverse or replace the seat.
3. Using a 3/4" socket wrench, loosen and remove the outlet
valve housing from the piston rod.
4. Clean out any debris and examine
the valve housing and seat. If the
seat is damaged, reverse or
replace the seat.
5. Remove, clean, and inspect the
upper cage and upper ball. Replace if they are worn or
damaged.
6. Reassemble the valves by reversing the steps above.
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.
Outlet Valve
Housing
Outlet Valve
Seat
Outlet Valve
Ball
Upper Cage
Upper Seal
Piston Rod
O-Ring
Foot Valve
Housing
Foot Valve
Seat
Foot Valve
Ball
Bushing
O-Ring
Lower Cage
Lower Seal
WARNING
10
© Titan Tool Inc. All rights reserved.
Repacking the Fluid Section
1. Remove the foot valve
and outlet valve
assemblies using the
steps in the “Servicing
the Valves” procedure
above.
2. Using 3/8” and 5/32”
hex wrenches, loosen
and remove the three
pump block mounting
screws.
3. Pull the pump block
down approximately
1/2” from the pump
housing.
4. Slide the pump block
and piston rod forward
until the piston rod is
out of the T-slot on the
connecting rod.
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 and install the new upper and lower
packings. Refer to the illustration below for proper
packing orientation.
9. Inspect the piston rod for wear and replace if necessary.
10. Reassemble the outlet valve assembly into the piston rod.
Torque the outlet valve housing to 25 ft./lbs.
Never use a wrench on the piston itself. This could cause
damage to the piston and cause leakage.
11. Insert the piston guide into the retainer nut. Thread the
retainer nut into the pump block until it is hand tight.
12. Slide the piston guide tool (included in the repacking kit)
over the top of the piston rod and insert the piston rod
through the bottom of the pump block. Using a rubber
mallet, tap the bottom of the piston rod lightly until the
piston rod is in position in the pump block.
13. Using a wrench, tighten the retainer nut securely.
14. Slide the top of the piston rod into the T-slot on the
connecting rod.
15. Position the pump block underneath the pump housing
and push up until it rests against the pump housing.
16. Thread the pump block mounting screws through the
pump block and into the main housing. Tighten securely.
17. Reassemble the foot valve assembly into the pump block.
NOTE: Coat the piston guide tool and the piston rod
with grease before inserting them into the
pump block.
CAUTION
NOTE: Use the T-slot on the connecting rod to hold
the piston rod in position while securing the
outlet valve housing.
Install lower packings
with raised lip and O-ring
facing up.
Install upper packings
with raised lip and O-ring
facing down.
O-Ring
O-Ring
Raised Lip
Raised Lip
Connecting
Rod
Retainer
Nut
Piston
Guide
Upper
Packing
Pump
Block
Lower
Packing
Filter Block
Mounting
Screw
Piston Rod
T-Slot
