7.
From the side of the pump back plate that contained the large O-ring, insert a round drift of slightly smaller
diameter than the hole for the piston shaft. (
Note
: a small socket on an extension or a wooden dowel makes
a suitable drift). Tap the drift with a mallet to drive the two backup washers, two piston shaft seals and the
piston shaft bushing out of the pump back body. See
Figure R-4
.
8.
Remove the remaining two 3/4" socket head cap screws from the check valve plate using a 1/4" Allen
wrench. Separate the check valve plate from the pump body.
If it is difficult to remove, try rotating the check valve plate 90°.
This provides a better grip for pulling the check valve plate
from the pump body.
9.
After the check valve plate has been separated from the pump
body, the membrane tube plug will remain in either the check
valve plate or the pump end of the membrane housing. Use
one of the following procedures to remove it:
A.
If the membrane tube plug remains in the mem-
brane housing, insert a hard, thin edge (e.g., a dull
pocketknife) between the tube plug and the fiberglass
moulding of the membrane housing. Work the blade
sideways to pry the tube plug out slightly, until there is enough of a gap between the tube plug body
and the membrane housing to insert a flat blade screwdriver. Then use two screwdrivers on opposite
sides of the tube plug to carefully work it out of the membrane housing. Avoid gouging or damaging
the membrane housing or the tube plug.
B.
If the membrane tube plug remains in the check valve plate, use a thin edge and/or flat blade
screwdrivers, on opposite sides of the membrane tube plug, to carefully pry the plug out of the check
valve plate. Avoid damaging the membrane tube plug.
10.
Disassemble the valves in the check valve plate
(see
Figure R-5
.) Use a 5/8" open end wrench
to unscrew the intake valve seat. Remove the
intake poppet valve and its spring. If necessary,
use needle-nosed pliers to remove the poppet
valve retainer. Then use the pliers to lift out the
reject poppet valve and its seat. Grip the x-
shaped ribs of the reject poppet valve and pull
straight up. The seat will be pulled out along
with the valve. After the reject poppet valve and
its seat have been removed, retrieve the reject
poppet valve spring from the bottom of the
check valve plate cavity.
This completes the disassembly of all user-
serviceable parts of the Katadyn
PowerSurvivor
40E
Watermaker.
