Servicing The Fluid Section - Titan IMPACT 410 Owner's Manual

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.
3. Perform the Pressure Relief Procedure 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!
4. Unscrew the return hose assembly from the pump block.
Remove the retaining clip from the bottom of the foot valve
housing. Remove the siphon assembly.
5. Tilt the sprayer back for easy access to the fluid section.
Servicing the Valves
The design of the 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 inlet valve housing
from the pump block.
2. Clean out any debris in the
inlet valve housing and
examine the valve housing
and seat. If the seat is
damaged, reverse or replace
the seat.
3. Using a 5/16" 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.
5. Clean out any debris and examine
the outlet valve housing and seat.
If the seat is damaged, reverse or
replace the seat.
6. Remove, clean, and inspect the
outlet cage, crush washer, and outlet valve ball. Replace if
they are worn or damaged.
NOTE: The outlet cage always must be used with the
crush washer. They are included together in the
repacking kit as assembly P/N 704-642.
7. Reassemble the valves by reversing the steps above.
NOTE: During reassembly of the outlet valve, apply one
drop of Loctite (included in the repacking kit) to
the threads of the outlet valve retainer before
threading it into the piston rod. Then, torque the
retainer to 144 in./lbs. (12 ft./lbs.).
© Titan Tool Inc. All rights reserved.
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 pump
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
Pump
through the bottom of
manifold
the pump block.
Piston
6. Loosen and remove the
bushing
retainer nut and piston
Nylon
guide from the pump
washer
block.
Inlet valve
7. Remove the upper and
cage
lower packings from
the pump block.
Inlet valve
ball
8. Clean the pump block
and install the new
Inlet valve
seat
upper and lower
packings. Refer to
Te on
the illustration below
O-ring
for proper packing
Inlet valve
orientation.
housing
Install upper packing
with raised lip and O-ring
Piston rod
Outlet valve
Raised Lip
cage
Crush
9. Inspect the piston rod for wear and replace if necessary.
washer
10. Reassemble the outlet valve assembly into the piston rod.
Outlet valve
Tighten the outlet valve retainer with a wrench until secure.
ball
Outlet valve
NOTE: Use the T-slot on the slider assembly to hold the
seat
piston rod in position while securing the outlet
valve retainer.
Outlet valve
retainer
IMPORTANT: 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.
NOTE: Coat the piston guide tool and the piston rod with
grease before inserting them into the pump block.
13. Using a wrench, tighten the retainer nut securely.
11
T-slot
Install lower packing
with the beveled
facing down. edge facing up.
O-Ring
English
Slider assembly
Retainer nut
Piston guide
Upper packing
assembly
Pump manifold
Pump manifold
mounting screw
Lower packing
assembly
Piston rod
Beveled Edge