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© Titan Tool Inc. All rights reserved.
13
Repacking the Fluid Section
Slider
Assembly
Crankshaft
Upper Seal
Retainer
Spacer
Upper
Packing
Lower
Packing
Upper
Housing
Piston Rod
Wear Ring
1. Remove the foot valve
assembly and the lower
housing 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. High rider models - turn the
knob on the side of the cart
clockwise to unlock the cart.
Tilt the cart backwards until it
locks into place.
Low boy models - tilt the cart
backward until it is vertical.
3. Pull the lever on the underside
of the sprayer toward the front
of the sprayer. This will un-
clamp the entire fluid section.
Slide the fluid section forward
to remove it from the gear
housing.
4. Place the upper housing
upright in a vise by clamping
on the wrench flats.
NOTE: Do not over-tighten the
vise. Damage to the
upper housing may
occur.
5. Using a wrench, remove the
upper seal retainer.
6. Slide the piston rod forward
until the piston is out of the
T-slot on the slider assembly.
7. Pull the piston out through the bottom of the upper
housing.
8. Inspect the piston rod for wear and replace if necessary.
9. Remove the upper and lower packings from the upper
housing.
NOTE: Be careful not to scratch, score, or otherwise
damage the upper housing during removal of
the packings.
10. Clean the upper housing. Inspect the upper housing for
damage and replace if necessary.
11. Locate the new upper and lower packings and pack the
areas between the packing lips with grease. Lubricate the
o-rings on the exterior of the packings with grease.
Install upper packing
with raised lip
facing down.
Raised Lip
12. Insert the upper packing into the
top of the upper housing with the
raised lip on the packing facing
down.
13. Insert the spacer on top of the
upper packing.
14. Thread the upper seal retainer
into the upper housing and torque to 25-30 ft. lbs.
15. Pre-form the lower packing using the lower packing sizing
tool (included in the repacking kit).
Install lower packing with
the side that has the o-ring
closest to the face of the
packing facing up.
Closer
Top
16. Insert the lower packing partially
into the bottom of the upper
housing so that the side that has
the o-ring closest to the face of
the packing faces up.
17. Push the lower packing into
position using the lower packing
insertion tool (see Fluid Section
Assembly parts list for lower
packing insertion tool P/N).
18. Place the piston insertion tool
(included in the repacking kit) over the top of the piston rod.
19. Insert the piston rod into the bottom of the upper housing,
through the lower packing, through the upper packing, and
out through the upper seal retainer.
NOTE: When repacking the fluid section, make sure the
raised lip on the bottom of the lower packing is
fully outside the packing around the piston rod
after insertion of the piston rod.
20. Remove the piston insertion tool from the top of the piston
rod.
21. Replace the upper housing back into the fluid section
clamp on the gear housing. Make sure to slide the top of
the piston rod into the T-slot on the slider assembly.
22. Push the lever on the underside of the unit toward the rear
of the sprayer to lock the fluid section back into place.
28. Making sure that the Viton o-ring and
PTFE
back-up ring
are lubricated and in place, thread the lower housing into
the upper housing. Using two wrenches, hold the upper
housing at the wrench flats with one wrench and tighten
the lower housing with the other.
29. Attach the high-pressure hose to the nipple on the back
of the housing and tighten with a wrench. Do not kink the
hose.
NOTE: Make sure the hose does not touch the cart
frame. If it does, reposition the nipple by turning
the upper housing until the hose is clear of the
frame and the nipple is within 45º of the back of
the unit.
30. Making sure that the Viton o-ring and
PTFE
back-up
ring are lubricated and in place, reassemble the foot
valve assembly and and thread it into the lower housing.
Tighten securely.
31. Thread the siphon tube/siphon set into the foot valve and
tighten securely. Make sure to wrap the threads on
the down tube/siphon tube adapter with
PTFE
tape
before assembly.
32. Replace the return hose into the clamp on the siphon tube.
33. Place the front cover on the gearbox housing and secure
in position using the four front cover screws.
34. Turn on the sprayer by following the procedure in the
“Operation” section of this manual and check for leaks.
NOTE: Repacking kit P/N 0558740 is available. For best
results use all parts supplied in this kit.
