ceramic slurry pump hose

Testing engines attached to trash pumps.

3VO

If one fills the pump with water will enough water stay in the pump to keep the seal from going bad? Fill the pump and block the output maybe? I should mention I don't have hoses to go with the pumps.

MoRo

You should, really have a couple short hoses. Fill a fairly large tub with water, put the intake and discharge hose ends in the tub and recirculate the water. No damage. Otherwise, put your hand on the vollute, often. When it gets warm, shut down and let things cool off. You can plug off the intake, leave the output open as the water won't get that high in the vollute. Again, check the temp of the vollute often as it will evaporate the water out.

3VO

Thank you MoRo.

ShaneZahn

If you are just testing how the engine runs, all you need to do is run water continuously from a garden hose into the pump while you test & adjust the engine. All pumps have ceramic & rubber shaft seals. The seal is lubricated & cooled with the water in the pump. If the seal gets hot or runs dry it will destroy the seal in fast order. Large shaft seals are very expensive. By blocking the outlet of the pump the water will generally get hotter faster & retain the heat after it is turned off. You can also boil the water so hot that the pump housing can melt or distort if its a thermoplastic pump housing.

CaseyJoeS.

I just keep a garden hose running into the pump the entire time. Never had a bit of trouble.

K-Tron

How can you tell what kind of seal your trash pump has? I have a couple Wisconsin powered ITT Marlow trash hog pumps that I have picked up at auctions. I have never pumped with them, but start them periodically every 2 weeks to keep the check balls in the oil pump from sticking. I have never put water into either. The seals are likely dead by now huh??

RSCurtis

If the pumps have grease cups for the seals, you might have gotten lucky.

3VO

Thanks everyone for the garden hose idea! K-Tron I was blessed with 4 trash pumps and 2 more with the missing pumps at the local city auction. 2 or 3, to 8HP. The oldest is from 1963. The newest is a OHV engine. No grease cups. The cast iron bore 3 HP Briggs IC is running. The end of the impeller hub has been brazed not sure if it is safe. The seal on this pump is just a tin flange crimped over the output shaft. The 8HP briggs has a TEEL pump. The 7 1/2 may have one too.