Jabsco Freshwater Pump Ran Dry

[Dino]

Hi, I arrived out to check my boat today and found that the freshwater pump was running continuously on my boat. I hadn’t been to the boat in over a week and I thought i had left the pump switched off because the tank was low.
So the model is a Jabsco 36900-0203. The belt had come off and the drive pulley on the motor was loose. So I put the belt back on and tightened the grub screw in the pulley. The motor runs and the diaphragm arm is moving fine but it’s not building up pressure.
Should I get a replacement diaphragm and try it or is there something else I should check?
Am I better off fitting a modern pump that might be quieter?

 

[Millenniumsteve]

Had the same happen to me middle of last year. Depends on the cost of spare parts and the age of the unit. I decided just to replace it with a new one (the old unit was over 10 years old) which cost just a fraction over £100. I also changed the location and wiring to make it easier to get to.

Just checked and on the Jabsco shop site a replacement diaphragm for yours costs £58.

 

[mil1194]

I changed my water pump a few months ago - mine had just stopped

Jabsco Jabsco Par Max 4HD Water Pressure Pump 25PSI 12V was the exact replacement (physically) and it’s much quieter.
Jabsco Par Max 4HD Water Pressure Pump 25PSI | Force 4