36
HTEC-500
16. Now remove the tool.
17. The next step is the installation of the new
piston. If the washing port diaphragm is worn,
please replace it. The diaphragm is shown as
the black part in this picture, but may also be
a different color. Fasten the screw securely to
set the piston in place. Then wipe the surface
of the piston with acetone using a Kimwipe to
remove oil from your fingers and dust.
18. Carefully place back the pump mount. Please
pay attention to the orientation of the parts.
The wider screw holes should be on the top
and the bottom as seen below.
19. Do not forget to put on the back-up ring.
20. Fasten the shorter screws.
