Replacing the PRIME/SPRAY Valve
Perform the following procedure using PRIME/SPRAY valve
replacement kit P/N 800-915.
1. Push the groove pin out of the valve handle.
2. Remove the valve handle and the cam base.
3. Using a wrench, loosen and remove the valve housing
assembly.
4. Make sure the gasket is in place and thread the new
valve housing assembly into the pump block. Tighten
securely with wrench.
5. Place the cam base over the valve housing assembly.
Lubricate the cam base with grease and line up the cam
with the pump block using the dowel pin.
6. Line up the hole on the valve stem with the hole in the
valve handle.
7. Insert the groove pin into the valve handle and through
the valve stem to secure the valve handle in position.
Gasket
Cam Base
Valve Stem
Pump Block
Valve Housing
Assembly
Dowel Pin
Valve
Handle
Groove Pin
10
© Titan Tool Inc. All rights reserved.
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 bottom of its stroke so that the
piston is in its lowest position. Turn off and unplug the
sprayer.
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!
2. For High Rider units, remove the return hose from the
clamp on the siphon tube. Unscrew the siphon tube from
the foot valve housing.
3. For Low Rider units, remove the retaining clip from the
bottom of the foot valve housing. Unscrew the return hose
from the pump block and remove the suction set assembly.
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. Loosen and remove the foot
valve housing from the pump
block.
2. Remove the lower cage, foot
valve ball, foot valve seat,
and o-ring from the foot valve housing.
3. 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.
4. Remove the adapter from the pump block.
5. Using a 3/8” hex wrench, loosen and remove the outlet
valve retainer from the piston rod.
6. Remove the upper seal, upper
cage, nylon washer, outlet valve
ball, and outlet valve seat from
the outlet valve retainer.
7. Clean out any debris and
examine the outlet valve
retainer and outlet valve seat. If the seat is damaged,
reverse or replace the seat.
8. Clean and inspect the upper cage and outlet valve ball.
Replace if they are worn or damaged.
9. Reassemble the valves by reversing the steps above.
NOTE: During reassembly, make sure the o-ring
between the pump block and foot valve housing
is lubricated with grease and in position.
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
Retainer
Outlet Valve
Seat
Outlet Valve
Ball
Upper Cage
Nylon Washer
Upper Seal
Piston Rod
Foot Valve
Housing
Foot Valve
Seat
Foot Valve
Ball
Lower Seal
Lower Cage
Adapter
Pump Block
O-Ring
WARNING
