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Old 08-26-2012, 05:28 PM   #1
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Water pump

I have 1964 Globe Trotter 19 ft. The original water pump works but has crack in housing so it leaks. I installed a flojet water pump, the motor will run but it will not pump water. Any ideas? Thanks for any help.
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Old 08-26-2012, 05:32 PM   #2
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Check all connections going to tank, if there are any leaks the pump will just suck air.
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Old 08-26-2012, 05:41 PM   #3
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Just checked for air leaks. When I wire the pump to a battery it works. Not sure what to do next. Thanks for your help.
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Old 08-26-2012, 06:04 PM   #4
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Just checked for air leaks. When I wire the pump to a battery it works. Not sure what to do next. Thanks for your help.
Are you saying that when wired direct to a battery and hooked to tank it pumps water but when wired to switch in trailer it runs but doesn't pump water?

If that is the case check that you have positive wired to positive and that you are getting 12V to the pump.
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Old 08-26-2012, 06:52 PM   #5
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I think you are having a primed pump problem. With the inlet hose connected and water at the intake. Remove the discharge hose and try running the pump until water squirts out. If no water you may be sucking air on the intake side. If you get water, reconnect the discharge hose and open a faucet. The turn on the pump.
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Old 08-26-2012, 07:56 PM   #6
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the choices I can see are: leak on intake side, collapsed or pluged hose on inlet side, plugged outlet, bad pump. I had a similar problem. The new pump did not work in the trailer the first time. Took it out and pumped water out of a bucket with it just fine. Put it back in the trailer and it worked fine.
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Old 08-26-2012, 08:01 PM   #7
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Did you hook up the new pump correctly? Water in the correct side and discharging out the correct side? Look for an arrow on the pump body.
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Old 08-27-2012, 12:20 PM   #8
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I will try to rewire the pump. I got it to pump some water. When I hook it to the battery it pumps just fine. So I don't think I have any leaks. Thanks for all the help.
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Old 08-27-2012, 12:50 PM   #9
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Must be wired backwards...
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Old 08-27-2012, 02:22 PM   #10
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I only have two wires and I've tried it both ways. Not sure what else to do?
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Old 08-27-2012, 09:35 PM   #11
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You should connect the red wire on the pump to the positive side of your circuit. The black wire should connect to a white wire. If there is no white wire, connect the black wire of the pump to the skin of the trailer.
I haven't seen where you mention a switch to turn on the pump.
Does the pump make noise when you wire it into the trailer wiring instead of the battery directly?
Are the inlet and discharge ports clearly marked on the pump?
If you disconnect the inlet hose to the pump, does water run out the hose freely?
What happens when you try to run the pump? Do any of the 12 volt lights go dim?
Do you know how to use a meter to check the voltage?
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