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3. With its cross side facing down (facing the valve seat), lower a new poppet valve into the
bore for the reject check valve. The poppet valve should be level and in the center of the
valve seat at the bottom of the bore. Observe that one end of the valve retainers has a
shallow hole that is the same diameter as the valve spring. Press a new spring into the hole
in one of the retainers. When installed correctly, the spring should stay in the valve retainer
when it is inverted. Lower the spring and valve retainer into the reject check valve bore with
the spring facing the poppet valve. Make sure the tube fitting still has an o-ring installed and
then screw it into the reject check valve hole and tighten securely with the 7/8" open-end
wrench. Test your installation by inserting a small screwdriver into the hole for the reject
check valve on the side of the check valve plate opposite the tube fitting. The reject poppet
valve should move up and down slightly.
4. Screw the plastic intake hose barb into the check valve plate (See Figure R-2). Then,
working from the other side of the check valve plate, install a new poppet valve, valve spring
and valve retainer, using the same procedure
as was used for the reject check valve
assembly. Lubricate a new o-ring (8012830)
with silicon grease and install it into its groove
in the pump side of the check valve plate.
5. Taking care that the intake check valve
components do not fall out of their bore, bring
the check valve plate and the pump body
together, align them, and install the six socket
head flange bolts to hold the assembly
together. Tighten these fasteners snugly. (If a
torque wrench is available, tighten to
approximately 120–140 in.-lbs.) Use a pencil
eraser or small screwdriver to test the action
of the intake poppet valve. See
Figure R-6.
6. Lubricate the inside of the cylinder in
the pump body with silicon grease.
Insert the piston assembly through
its hole in the pump back plate and
slide it as far as it will go toward the
pump back plate, as shown in
Figure R-7. Install the two o-rings
(8012830) and (8012444) in their
grooves in the pump back plate.
Make sure the relief valve spring is
installed in the pump body. Bring the
pump back plate and pump body
together carefully, first guiding the
piston into the cylinder in the pump body, and then pressing the back plate as close as
possible to the pump body. Install the four sockethead flange bolts and tighten snugly
(approximately 120–140 in.-lbs.)
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