Tuthill KINNEY KC Series, Operator'S Manual, Page: 32 / 48

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Manual 1807 Rev B p/n 001807 0000
08
REASSEMBLY
Before starting to reassemble the pump, inspect
all parts to make sure that they are clean, smooth,
and free of nicks and old sealing compound.
Replace all worn or damaged parts. Do not use
solvents such as kerosene or carbon tetrachloride
for cleaning unless facilities are available to
evaporate them by vapor degreasing or washing
in acetone or alcohol. Tuthill Vacuum & Blower
Systems recommends a general cleaning solvent
with flash point exceeding 140°F (60°C), such as
Solvent 140. Avoid leaving excessive solvent on
the pump parts.
As the pump is reassembled, lightly coat the
cylinder and internal moving parts with AX Vacuum
Oil to facilitate assembly and to ensure that all
parts are lubricated when the pump is first started.
1. If removed, replace the cam key and press the
open head cam onto the shaft. Use a securing
compound, such as Loctite®, if necessary.
Insert the cam key and top the closed head
cam onto the shaft. Rotate the shaft to check
that the cams do not bind on the center wall.
2. On KC-5 and KC-8 models, position the piston
so that the inlet ports in the piston slide are
facing away from the discharge valve side
of the pump. Place the closed head slide pin
on the piston with the flat side down and the
closed end of the slide pin toward the center
wall. Insert the piston and slide the pin into the
pump.
On KC-15 models, position the closed head
piston with the inlet slots in the piston slide
facing away from the discharge valve side of
the pump. Place the closed head slide pin over
the piston slide with the scalloped edges up
and the arrow cast into the slide pin pointing
toward the discharge valve side of the pump.
Insert the piston and slide pin into the pump.
3. Check that the sealing faces of the closed
head and cylinder are clean and free of
all sealant. Carefully apply a thin coat of
Loctite 515 to the sealing faces of the cylinder
and the head.
CAUTION !
If too much or too thick an application of
sealing compound is used, it will squeeze
into the pump during assembly and will cause
the moving parts to stick or clog the small oil
ducts.
4. Position the closed head on the cylinder and
install the securing cap screws. Tighten the
closed head cap screws. Rotate the shaft to
check that there is no binding. Replace the
bearings into the head.
5. Check that the sealing faces of the closed
head and closed head cap are clean. Place the
sealing O-ring on the closed head cap. Position
the cap on the closed head. Install and tighten
the securing cap screws.
6. On KC-5 and KC-8 models, position the open
head piston with the inlet port in the piston
slide facing away from the discharge side of
the pump. Position the slide pin on the piston
slide with the flat side down and the closed end
toward the center wall.