© Titan Tool Inc. All rights reserved. 13
Repacking the Fluid Section
NOTE: The factory-installed packings are black in
color. The replacement packings in the packing
replacement kit are white.
Retaining
Ring
Connecting
Pin
Slider
Assembly
Crankshaft
Knock-Off
Nut
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. Slide the retaining ring up on the
slider assembly to expose the
connecting pin.
3. Push the connecting pin forward
through the slider assembly and
piston. The connecting pin will
fall into a recessed area of the
gear box housing where it can
be retrieved.
4. Tap the knock-off nut with a
soft hammer so that it turns
counterclockwise and loosens.
5. Turn the uid section
counterclockwise to remove it
from the gear box housing.
6. Place the upper housing upright
in a vise by clamping on the
wrench ats.
NOTE: Do not over-tighten the
vise. Damage to the
upper housing may
occur.
7. Using a wrench, remove the
upper seal retainer.
8. Slide the piston rod out through
the bottom of the upper housing.
9. Inspect the piston rod for wear
and replace if necessary.
10. 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.
11. Clean the upper housing. Inspect the upper housing for
damage and replace if necessary.
12. 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
13. Insert the upper packing into the
top of the upper housing with the
raised lip on the packing facing
down.
14. Insert the spacer on top of the
upper packing.
15. Thread the upper seal retainer
into the upper housing and torque to 25-30 ft. lbs.
Install lower packing with
the side that has the o-ring
closest to the face of the
packing facing up.
Closer
Top
16. Pre-form the lower packing using
the lower packing sizing tool
(included in the repacking kit).
17. 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.
18. 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).
19. Place the piston insertion tool (included in the repacking
kit) over the top of the piston rod.
20. 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: Whenrepackingtheuidsection,makesurethe
raised lip on the bottom of the lower packing is
fully outside the packing around the piston rod
after insertion of the piston rod.
21. Remove the piston insertion tool from the top of the piston
rod.
22. Turn the knock-off nut counterclockwise until it is ush
against the upper housing.
23. Lubricate the threads on the upper housing with anti-seize
compound. Remove the upper housing from the vise.
24. Thread the upper housing into the gear box housing,
turning clockwise. When the connecting pin hole on the
piston rod lines up with the hole in the slider assembly,
insert the connecting pin.
25. Slide the retaining ring down over the connecting pin.
26. Continue to turn the upper housing clockwise until the
knock-off nut is ush against the gear box housing.
NOTE: If the nipple on the upper housing does not face
the back of the unit, turn the upper housing
counterclockwise until the nipple faces the back
of the unit. Do not turn the upper housing more
than one full turn.
27. Once the nipple is positioned, turn the knock-off nut
clockwise until it contacts the gear box housing.
28. Tap the knock-off nut with a soft hammer to tighten it
against the gear box housing.
29. 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 ats with one wrench and tighten
the lower housing with the other.
30. 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: For low rider units, 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.
31. 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.
32. 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.
33. Replace the return hose into the clamp on the siphon tube.
34. Place the front cover on the gearbox housing and secure
in position using the four front cover screws.
35. Turn on the sprayer by following the procedure in the
“Operation” section of this manual and check for leaks.
NOTE: Repacking kit P/N 800-273 is available. For best
results use all parts supplied in this kit.
