Servicing The Fluid Section - Titan SPEEFLO PowrLiner 2850 Notice D'utilisation

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.
Repacking the Fluid Section
1. Remove the foot valve assembly using the steps in the
NOTE: The outlet valve does not need to be
Fluid Section
Housing
Piston Bushing
Inlet Cage
Inlet Valve Ball
2. Using 3/8" a hex wrench, loosen and remove the two
Inlet Valve Seal
Inlet Valve Seat
3. Pull the pump block down approximately 1/2" from the
Teflon O-Ring
Inlet Valve
4. Slide the pump block and piston rod forward until the
Housing
5. Slide the piston rod out through the bottom of the pump
6. Loosen and remove the retainer nut and piston guide from
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
10. Inspect the piston rod for wear and replace if necessary.
11. Insert the upper packing into the top of the pump block
12. Insert the piston guide into the retainer nut. Thread the
Piston rod
Upper seal
13. Pre-form the lower packing using the lower packing sizing
Upper cage
14. Insert the lower packing partially into the bottom of the
Outlet valve
ball
Lower seal
Outlet valve
seat
Outlet valve
retainer
15. Push the lower packing into position using the lower
16. Inspect the piston rod for wear and replace if necessary.
15
"Servicing the Valves" procedure above.
disassembled from the piston rod for this
procedure.
pump block mounting screws.
gear box housing.
piston rod is out of the T-slot on the slider assembly.
block
the pump block.
areas between the packing lips with grease. Lubricate the
o-rings on the exterior of the packings with grease.
with the raised lip on the packing facing down.
retainer nut into the pump block until it is hand tight.
tool (included in the repacking kit).
pump block so that the side that has the o-ring closest to
the face of the packing faces up.
Install upper packing
Install lower packing
with raised lip
with large beveled
facing down.
Raised Lip
packing insertion tool (see Fluid Section Assembly parts
list for lower packing insertion tool P/N).
English
Retainer Nut
Piston Guide
Upper Packing
Assembly
Pump Manifold
Pump
Manifold
Mounting
Screw
Lower Packing
Assembly
Piston Rod
edge facing up.
Large Beveled Edge