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Shurflo screwhead

WCF

Help Support WCF:

I'm not sure of size mate but if you like I can check mine in morning but bear in mind they might have changed the size over time
Cheers mines about 3 yrs old & still working but can't get any water out so thought I would see if anything stuck inside hence why I wanna unscrew
 
Cheers mines about 3 yrs old & still working but can't get any water out so thought I would see if anything stuck inside hence why I wanna unscrew
It could of seized with atmospheric humidity and inner corrosion. Pretty rare to be honest as they are considered one of the best pumps.

Does it feel like it's turning when you apply 12v to it? It's rare that the brushes are at fault but would be worth testing the wiring for just the motor for an open or short circuit to determine that.
 
If the pump has stood for a long time the non return valve inside does stick closed. We found connecting it up the outside tap and using water pressure frees it.
Obviously the water flow must be connected in the direction of flow and the tap opened slowly.
You can use Hoselok connectors to do this procedure.
 
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