Servicing The Fluid Section - Titan SPEEFLO PowrLiner 850 Notice D'utilisation

NOTE: The knob is designed to allow 90º of movement
between the SPRaY and PRIME positions. The
inside of the knob has a 90º opening in it's
circumference where the tab of the cam should
be positioned to allow this movement. When
placing the knob with the arrow in the 9:00
position, make sure that the tab on the cam
is within the 90º opening on the inside of the
knob. Then, make sure the knob is at the end of
its movement in the clockwise direction (this is
the SPRaY position) before continuing with this
procedure.
Back of PRIME/SPRAY valve knob
90º Opening
14. Slowly turn the knob counterclockwise until the bottom of
the knob moves out to where it is flush with the bottom of
the cam (approximately 5–7º).
15. Place the retaining clip over the stem of the stem/ball
assembly where the stem passes through the recessed
portion of the knob.
16. Using a 5/16" (8mm) nut driver, push the clip into the
recessed portion of the knob with steady, even pressure
until it stops.
IMPORTaNT: Do not hammer or wiggle the clip into
position. It will damage the clip.
18. Turn the PRIME/SPRAY knob to the PRIME position.
19. Start up the sprayer and run water through the system to
check for leaks. If there are no leaks, the sprayer is ready
to use.
English
Cam positioned
with tab in
90º Opening

Servicing the Fluid Section

Use the following procedures to replace the seals and repack the
fluid section.
NOTE: Repacking kit P/N 759-365 is available. For best
results use all parts supplied in this kit.
Disassembling the Fluid Section
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.
1. Remove the suction set.
2. Remove the front cover and the four (4) screws that
secure it using a T20 Torx head driver.
3. Remove the yoke screw and washer that secures the
dowel pin. The dowel pin connects the yoke to the piston.
4. Using a pliers, pull the dowel pin out.
5. Rotate the pump shaft so the piston is in the top dead
center position. This can be done by pushing on the yoke.
This is required to disassemble all the parts.
6. Unscrew and remove the Sureflo Valve assembly (refer to
the Cleaning the Sureflo Valve procedure in the Cleanup
section of this manual).
7. Remove the piston assembly by pushing down on the
piston near the yoke.
8. Unscrew and remove the top nut using an adjustable
wrench.
9. Remove the worn seal using a flat head screwdriver or
punch. Remove the top seal from the top by pressing
against the side of the seal and popping it out. Be sure
not to scratch the housing where the seals are located.
10. Clean the area where the new seals are to be installed.
assembling the Fluid Section
1. Lubricate the new top seal with Piston Lube (P/N 314-480)
or light household oil and place the seal by hand with the
cup side of seal down into the top port of the housing.
2. Place a small amount of anti-seize on the threads of the
top nut. Place the top nut into the top of the housing and
tighten with an adjustable wrench. This will drive the top
seal into the correct position.
3. Lubricate the seal on the piston/
seal assembly similar to the
top seal. Place the piston/seal
assembly into the bottom of the
housing. Insert the insertion tool
and push into position to properly
seat the piston/seal. Remove
the insertion tool.
4. Install the new O-ring on the
Sureflo Valve assembly, lubricate
with Piston Lube (P/N 314-480),
thread into the bottom (inlet) of the housing, and tighten
with an adjustable wrench. This will drive the bottom seal
into the correct position.
5. Align the piston with the yoke. Be careful not to damage
the piston.
6. Apply any type of non-silicone household grease to the
piston and yoke area (where the dowel is inserted) to
prolong life.
7. Install the dowel pin to connect the yoke to the piston.
The piston may have to be moved up or down to align with
the yoke.
8. Install the yoke screw and washer to secure the dowel pin.
12
Insertion
Tool
© Titan Tool Inc. All rights reserved.