Weak water flow thru AC.

[MICHAEL ERBGUTH]

We are getting a weak water flow from our AC. Has anyone rebuilt one of these or just replace? New pump is $350 and the wet end kit is $110.



Don't want to waste the $$$ if the wet end rebuild won't work.

Any advise greatly appreciated.

Mike.

 

[Gallf1]

We are getting a weak water flow from our AC. Has anyone rebuilt one of these or just replace? New pump is $350 and the wet end kit is $110.

View attachment 133078

Don't want to waste the $$$ if the wet end rebuild won't work.

Any advise greatly appreciated.

Mike.

It may not be the pump....
Did you check the intake strainer and flush out the cooling line? When I bought my boat the previous owner (unknown to me) had sucked up some mud from sitting in a shallow slip at a marina and it partially blocked the system. The blockage was inside the a/c itself
I flushed it out with a garden hose (dockside water pressure) and a lot of junk came out.
Also check the coolant water hose connection to the a/c unit and make sure it hasn't kinked for some reason.

If all that is clear, I would test the pump by disconnecting the output side hose and let the pump discharge into a bucket while you time the GPM to see if it is in spec.

 

[ranger58sb]

And if dockside water pressure won't do it, cleaning with Barnacle Buster or Rydlyme can help, too.

-Chris

 

[MICHAEL ERBGUTH]

It may not be the pump....
Did you check the intake strainer and flush out the cooling line? When I bought my boat the previous owner (unknown to me) had sucked up some mud from sitting in a shallow slip at a marina and it partially blocked the system. The blockage was inside the a/c itself
I flushed it out with a garden hose (dockside water pressure) and a lot of junk came out.
Also check the coolant water hose connection to the a/c unit and make sure it hasn't kinked for some reason.

If all that is clear, I would test the pump by disconnecting the output side hose and let the pump discharge into a bucket while you time the GPM to see if it is in spec.

This is very god advise. I did check the strainer and it looked good and clean but did not flush anything out. I will absolutely do all the easy stuff before the pump rebuild. - Thank you very much

 

[bbwhitejr]

If cleaning and checking things still doesn't help, take the pump out. Pull the wet end off of the motor. Disassemble it and you will find a small magnetic impeller. It should spin very freely on the thin ceramic shaft. If it does not, take some real fine emory cloth and smooth up the shaft. Wire in a 110v 3-prong plug on the motor and you can bench test before reinstalling in the boat.

Bennett