Titan 805-015 Manual Del Propietário página 11

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. Remove the pusher stem clip
and slide the pusher stem
housing from the foot valve
housing.
2. Using a wrench, loosen and
remove the foot valve housing
from the pump block.
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. 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
through the bottom of
the pump block.
Pump
6. Loosen and remove the
block
retainer nut and piston
Bushing
guide from the pump
block.
Foot valve
7. Remove the upper and
seal
lower packings from the
Inlet cage
pump block.
Foot valve
8. Clean the pump
ball
block and install the
Foot valve
new upper and lower
seat
packings. Refer to the
illustration below for proper packing orientation.
Teflon
O-ring
Install upper packing
Foot valve
with raised lip and O-ring
O-ring
Pusher
Raised Lip
stem
housing
9. Inspect the piston rod for wear and replace if necessary.
10. Reassemble the outlet valve assembly into the piston
rod. Tighten the outlet valve retainer with a wrench until
Piston rod
secure.
Outlet cage
NOTE: use the T-slot on the slider assembly to hold the
Crush
piston rod in position while securing the outlet
washer
valve retainer.
Outlet valve
ball
IMPORTaNT: Never use a wrench on the piston itself. This
Outlet valve
could cause damage to the piston and cause leakage.
seat
11. Insert the piston guide into the retainer nut. Thread the
Outlet valve
retainer nut into the pump block until it is hand tight.
retainer
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.
14. Slide the top of the piston rod into the T-slot on the slider
assembly.
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 pump housing. Tighten 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
Pump
block
Pump block
mounting
screw
Lower
packing
Piston rod
Beveled Edge