Titan 552600 Service Manual page 10

MAINTENANCE
4.
Using a 3/8" wrench, loosen and remove the outlet valve retainer
from the piston rod.
Always service the outlet
i
valve with the piston rod
attached to the pump.
This will prevent the
piston rod from rotating
during disassembly of
the outlet valve.
5.
Clean out any debris and examine the
retainer and outlet valve seat. If the
seat is damaged, reverse or replace the
seat.
6.
Remove, clean, and inspect the outlet
valve cage and outlet valve ball.
Replace if they are worn or damaged.
7.
Reassemble the valves by reversing the
steps above.
During reassembly, make sure the Viton o-rings
i
and the PTFE back-up rings between the upper
housing and lower housing as well as between
the lower housing and the foot valve housing are
lubricated with grease and in position.
REPACKING THE FLUID SECTION
1.
Remove the foot valve assembly and the lower housing using
the steps in the "Servicing the Valves" procedure above.
The outlet valve does not need to be disassembled
i
from the piston rod for this procedure.
2.
Loosen and remove the two nuts and washers (1) from
underneath the sprayer. Remove the fluid section retainer (2).
This will unclamp the entire fluid section (3).
3.
Slide the fluid section forward to remove it from the gear housing.
10
Upper
Housing
Piston Rod
Outlet Valve
Seal
Outlet Valve
Cage
Outlet Valve
Ball
Nylon
Washer
Outlet Valve
Seat
Outlet Valve
Retainer
Lower
Housing
2
3
1
4.
Place the upper housing upright in
a vise by clamping on the wrench
flats.
Do not over-tighten
i
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.
Be careful not to scratch,
i
score, or otherwise
damage the
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.
15.
Pre-form the lower packing using the lower packing sizing tool
(included in the repacking kit).
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.
IMPACT 1040
Crankshaft
Slider
Assembly
Upper Seal
Retainer
Spacer
Upper
Packing
Upper
Housing
Lower
upper
Packing
Wear Ring
Piston Rod
Install upper packing
with raised lip
facing down.
Raised Lip
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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