Servicing The Fluid Section; Repacking 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. Apply
blue Loctite (P/N 426-051) to male threads of inlet valve
housing and torque to 450-500 in-lbs.
© Titan Tool Inc. All rights reserved.

Repacking the Fluid Section

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