Titan IMPACT 640IA Manual De Mantenimiento página 10

MAINTENANCE
REPACKING THE FLUID SECTION
1.
Remove the foot valve assembly using the steps in the "Servicing
the Valves" procedure above.
The outlet valve does not need to be disassembled
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from the piston rod for this procedure.
2.
Using 3/8" a hex wrench,
loosen and remove the
two pump block mounting
screws.
3.
Pull the pump block down
approximately 1/2" from the
pump housing.
4.
Slide the pump block and
piston rod forward until the
piston rod is out of the T-slot
on the slider assembly.
5.
Slide the piston rod out
through the bottom of the
pump block.
6.
Loosen and remove the
retainer nut and piston
guide from the pump block.
7.
Remove the upper and
lower packings from the
pump block.
8.
Clean the pump block and install the new upper and lower
packings. Refer to the illustration below for proper packing
orientation.
Install upper packing
with raised lip and O-ring
facing down.
O-Ring
Raised Lip
9.
Inspect the piston rod for wear and replace if necessary.
10.
Reassemble the outlet valve assembly into the piston rod.
Tighten the outlet valve retainer with a wrench until secure.
Use the T-slot on the slider assembly to hold the
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piston rod in position while securing the outlet
valve retainer.
Never use a wrench on the piston itself. This could
cause damage to the piston and cause leakage.
Attention
11.
Insert the piston guide into the retainer nut. Thread the retainer
nut into the pump block until it is hand tight.
12.
Slide the piston guide tool (included in the repacking kit) over
the top of the piston rod and insert the piston rod through
the bottom of the pump block. Using a rubber mallet, tap the
bottom of the piston rod lightly until the piston rod is in position
in the pump block.
10
Slider
assembly
Retainer
nut
T-Slot
Piston
guide
Upper
packing
Pump
block
Pump block
mounting
screw
Lower
packing
Piston rod
Install lower packing
with the beveled
edge facing up.
Beveled Edge
Coat the piston guide tool and the piston rod with
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grease before inserting them into the pump block.
13.
Using a wrench, tighten the retainer nut securely.
14.
Slide the top of the piston rod into the T-slot on the slider
assembly.
15.
Position the pump block underneath the pump housing and
push up until it rests against the pump housing.
16.
Thread the pump block mounting screws through the pump
block and into the pump housing. Tighten securely.
17.
Reassemble the foot valve assembly into the pump block.
18.
For High Rider cart units, thread the siphon tube into the foot
valve and tighten securely. Make sure to wrap the threads on the
siphon tube with PTFE tape before assembly. Replace the return
hose into the hose clip on the siphon tube.
19.
For Skid and Low Rider units, insert the elbow on the siphon
assembly into the bottom of the foot valve housing. Push the
retaining clip up into the groove inside the foot valve housing to
secure the siphon assembly in position. Thread the return hose
into the pump block and tighten securely.
20.
Place the front cover on the pump housing and secure in position
using the four front cover screws.
21.
Turn on the sprayer by following the procedure in the "Operation"
section of this manual and check for leaks.
Repacking kit P/N 704-586 is available. For best
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results use all parts supplied in this kit.
IMPACT 640