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MAINTENANCE
REPACKING THE FLUID SECTION
1.
Remove the foot valve assembly
and the lower housing usxxxing the
steps in the "Servicing the Valves"
procedure above.
The outlet valve does not
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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.
Do not over-tighten the
i
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.
Be careful not to scratch, score, or otherwise
i
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.
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.
10
15.
Crankshaft
16.
Slider
Assembly
17.
Upper Seal
18.
Retainer
19.
Spacer
Upper
Packing
Upper
Housing
20.
Lower
21.
Packing
Wear Ring
22.
Piston Rod
23.
24.
25.
26.
27.
28.
Install upper packing
with raised lip
facing down.
29.
Raised Lip
Pre-form the lower packing using the lower packing sizing tool
(included in the repacking kit).
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.
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).
Place the piston insertion tool (included in the repacking kit) over
the top of the piston rod.
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.
When repacking the fluid section, make sure the
i
raised lip on the bottom of the lower packing is
fully outside the packing around the piston rod
after insertion of the piston rod.
Remove the piston insertion tool from the top of the piston rod.
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.
Push the lever on the underside of the unit toward the rear of the
sprayer to lock the fluid section back into place.
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.
ttach the high-pressure hose to the nipple on the back of the
housing and tighten with a wrench. Do not kink the hose.
Make sure the hose does not touch the cart frame.
i
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.
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.
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.
Replace the return hose into the clamp on the siphon tube.
Place the front cover on the gearbox housing and secure in
position using the four front cover screws.
Turn on the sprayer by following the procedure in the "Operation"
section of this manual and check for leaks.
Repacking kit P/N 0558740is available. For best
i
results use all parts supplied in this kit.
1140I / 1140IA
Install lower packing with
the side that has the o-ring
closest to the face of the
packing facing up.
Closer
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