24
A.
Lower a new poppet valve spring into the bottom of the bore in the check valve plate.
Use your little finger or the eraser end of a pencil to press it into its seat. It is designed
to be a light press fit and, when installed correctly, it should stay vertical in place
during the next step.
B.
Use needle-nosed pliers to carefully lower one of the new poppet valves into the bore.
The poppet valve should rest on top of the spring with the poppet’s cross side facing
up.
C.
Lower the new reject valve seat into the bore and use a finger to press it down as far
as it will go. Note that the hole in the middle of the valve seat has a beveled edge on
one side. The side with the beveled edge
must
face downward; i.e., it must face the
poppet valve. When properly installed, the valve seat should fit neatly over the
poppet valve. Test the poppet valve by pressing it with the eraser end of a pencil. It
should move up and down slightly and seat squarely in the valve seat.
D.
Locate the small depression in the center of one end of the poppet valve retainer and
press the second valve spring into the depression. It was designed as a light press fit
and should stay in place after being installed. Then lower the poppet valve retainer
into the bore in the check valve plate with the spring facing upward.
E.
Lower the second poppet valve into the bore in the check valve plate and rest it
carefully on top of the valve spring.
F.
Remove the old o-ring (8013015) from the intake valve seat and replace it with the
new one from the
RSK
. Carefully screw the intake valve seat into the check valve plate
and tighten with a 5/8" open end wrench. Use the eraser end of a pencil or a small
allen wrench to test the operation of the intake poppet valve. The poppet valve should
move down slightly and then spring back up against its seat.
7.
Replace the two large o-rings (8012947) and the two smaller o-rings (8013006) on the
membrane tube plug with new o-rings from the
RSK
. Insert the small end of the membrane
tube plug into the exposed hole in the membrane element (which should have been left
installed in the membrane housing) and press the tube plug into the membrane housing as far
as it will go. The ridge on the outside of the tube plug should be flush against the end of the
membrane housing.
8.
Press the piston as far as it will go toward the pump back plate. Install a new o-ring
(8012588) into its groove in the check valve plate.
9.
Press the check valve plate over the exposed end of the membrane tube plug. If necessary,
rotate the check valve plate to align it accurately with the pump body and install the 3/4"
and the 3" socket head cap screws. Check that the two large o-rings (8012588) in the check
valve plate and the pump back plate are still seated in their grooves and then tighten the four
caps crews evenly with a 1/4"
allen wrench.
10.
Slide the two 5" socket head cap
screws through the holes in the
check valve plate and the back
plate. Slide the rubber boot onto
the piston shaft. See
Figure R-8
.
11.
Insert a small screwdriver or an
allen wrench through the hole in
the piston shaft and rotate the shaft
to align its hole with the hole in the
slider shaft of the drive assembly.
When they are aligned, slide the
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Страница 35: ...35 Service Log Date Preserved Membrane Cleaned Membrane Other Service ...