High Volume Pump for Pontoons

[kglissmeyer]

I have a High Volume Double Pump Action Sevylor pump for my pontoon boat that quit pumping air after I used it the first time to fill my boat. I've taken it apart and everything looks good and sounds good. Critical parts are lubricated, the pump action works, but just a whisper of air comes out. Nothing noticable as far as obstructions. I'm stumped. Any ideas?

[Eric-WD]

not being able to see it.

If it stoped working while stored I would run a wire up the snout to see if a bug had over wintered in there.

If no bug

Then I would put it in a bucket of water and see where the air is coming out.

a spray bottle full of soap bubbles will do this also

Eric

[kglissmeyer]

Thanks, I'll try that this evening!

[Uncle Jesse]

If the bug and bubbles don't work, check the plunger again and be sure there was not an O-ring or something similar that formed a seal again the cylinder wall in the bottom of the cylinder.

The small electric compressor my friend gave me when it quit pumping air had a leak at the base of the hose.

[fcch]

Hmmm, ... If you have an obstruction, the pumping action would be hard to do.

IMHO, the check valve could be stuck half way. Or ... 'ya have a leak in the hose.

Take the hose off. Does good air come straight out of the "handle"?
My 0.02$

[kengore]

I have a similar pump that I use on my white water raft, it will sometimes develop a sticky check valve and refuse to pump. I can usually fix it by running some clean water through the system.

Also you might make sure you have the hoses on the correct fittings. Mine has both a 'suck' and a 'blow' connection. I have been fooled when trying to top off the boat only to find I had it connected to the 'suck' end!