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When you get it that far you can also
give it a tap.
make sure they're nice and snug.
and repeat
the other side.
O.K. So now we've got the main body all put back together
The "o" ring for the sight glass
sometimes it is necessary change other times it's not but if you notice
it leaking
then I would change it.
If not
don't worry about it.
O.K. now
back to the manifold.
we are going to put on our new
pulsation damper.
Just push it on
grab your clamp.
It doesn't matter which way it goes back on.
As long as it goes back on.
You'll notice sometimes with the new ones
it seems to be a little thicker than the old one.
You may have to adjust to get that clamp to get it to seat.
Now that we've got that back on
take a screw driver and tighten it up.
Generally if your replacing
this diaphragm
and you are
using in the same retaining ring
there will be a mark
where this has been tightened down to previously.
Just take it back down to that.
So that you don't see the mark any more
and that should be tight enough.
If by chance
when you fire up the pump and it leaks a little bit
just tight the clamp a little more.
Okay,
Now we're going to reinstall our valves.
Take the new ones
before we put them in
make sure the springs are good in them.
Sometimes what happens is the coating that they put on these to
protect the steel
will make them stick. So just make sure that they're free moving.
Put your
lower valves in first.
Take your valve "o" rings
place them in
and then we're going to do
the ones in the manifold.
Now in the manifold
where the valves sit there is actually two little grooves
in both chambers.
What you want to do is to make sure that you get the one leg
of that valve
to sit in between the groove
otherwise the valves will not seat
properly
in the manifold.
Put the "o' rings in place.
Now we go to install it
hold the manifold like so
and the valve "o' rings because they will have a tendency to drop on you.
Pick it up
and let it drop on.
Replace you're nuts. Snug it up. There.
Now we are going to replace the air accumulator diaphragm.
Just drop it in place and you can push it
into the little groove in the uh...
main body
of the manifold.
Take the air accumulator diaphragm head
place it on your pump
reinstall all the bolts.
When tightening these down
you want to do a star pattern on this as well
to bring the head down even.
And I might might have
well-done so.
Now that we have the top back on
what we need to do
is put air back in.
Take the cap off
hit it
with a hundred and twenty five pounds of air.
Pardon me.
You can hit it with air straight out of your compressor. Most compressors hit
a hundred twenty-five psi.
Done, for now. There is al ittle secret I'll tell you.
Oh, the other thing is this little "o" ring here
is for the sight glass.
If you desire to change it as well along with everything else
use a five millimeter Alan Key.
Loosen the bolts on the sight glass.
Take the sight glass off.
There is your "O" ring.
Use your finger nail. Pull it out.
Gab the new one. Put it back in.
Tighten your bolts back up.
Now with this being plastic you don't want to over tighten.
So you tighten it up snug.
And just give it
a quarter turn after.
And that takes care of that.
Now we well now put in our
drain plug.
Tightened up.
Now the oil you're going to replace it in here
is
S.A.E. 30 non-detergent oil.
You fill it up.
Fill about half of the sight glass.
Bleed off the air. You may have pull
Depending on how you're doing this. If you're doing it on a bench
or on the pump.
Pull the engine over make sure it doesn't start.
Bleed out the air.
Now after you've got this all remounted and oiled up
you may need to bleed the air off.
What you do you fire up your unit
and with no guns or booms or anything open
have it run.
Set your pressure to whatever you are spraying at
whether it be
ten pounds,
twenty pounds,
even sixty pounds.
Take a look at the red return line that's coming off your regulator
back to your tank
or any return line.
It doesn't matter what color it is.
If its bouncing
then you now need to bleed some air off.
Two ways of doing it
take a pen
push on the little ***
or use the cap
and just give it a quick little shot.
Once you see the return line and the gauge settle down
you know that you have the proper amount of air
in this chamber.
O.K I hope this has been helpful and informative on
rebuilding a D 30 pump or any diaphragm pump
It's all basically the same.
Just take your time.
And remember to mark your parts.
and uh... any questions
you can always get hold of us at
rittenhouse.ca.
Or call us on our one eight hundred number.