Question about Dynamo ABOVEGROUND POOL PUMP - 3/4HP -

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How do you remove a Pac Fab Dynamo Impeller - Dynamo ABOVEGROUND POOL PUMP - 3/4HP -

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6ya6ya
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Posted on Jan 02, 2017

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john224
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SOURCE: need to disassemble pentair dynamo pump to replace

Remove the cover from the back of the motor and lock the shaft from turning. Then spin off the impeller.

Posted on Jun 13, 2009

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MOTORWIZJ
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SOURCE: how do i remove the impeller from a dynamo pool

WITH LOTS OF LUCK . THEY SCREW OFF(OFF TO THE LEFT LOOKING AT THE IMPELLER SO COUNTER CLOCKWISE ) VICE GRIP OR SCREW DRIVER ON SHAFT TO HOLD IT, THING IS IF THE SHAFT IS RUSTY YOU HAVE A REAL GOOD CHANCE OF BREAKING IT AND IMPELLERS CAN BE HARD TO FIND.. THE SEAL SHOULD BE # 1000 FOR THAT PUMP... BEST OF LUCK.. J

Posted on May 25, 2010

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SOURCE: how do you pull the

After you have the pump broken down. Check for a screw in the center of the impeller. If it has one then you will need to remove it. This will be a left handed screw. If that is done then you will need to remove the back of the motor or the small center plate on the back. Then the shaft will accept a wrench to hold it with. Then you should be able to unscrew the impeller with water pump pliers or a large basin wrench. The brass threads on the impeller will kind of stick to the steel of the shaft so it is just a matter of breaking it free, then it will spin easily.
I usually put a screwdriver in the left side of the impeller and give it a sharp smack downward with a hammer.
There are two methods, good luck.

Posted on Sep 28, 2010

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This site shows a separate part for the strainer body, but I'm not sure it is separate.
Call them with your model number and they can tell you if it unscrews and sell you the repair part that you need.
Worse case, you might have to see if you can remove the entire pump casing and purchase that.
Gary

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My pressure gauge is reading 0 when the pump is on. I have the pool water level good and filled the pump tank before turning on. I have used this unit 11 yrs now and 2 yrs ago housing front was replaced....


1. Make sure multi-port valve if on "filter" (gotta start with the easy answers)
2. Remove the V-clamp holding the pump housing together and start inspection.
3. remove diffuser to gain access to the impeller.
4. check impeller for clogs (very common if around pine trees)
5. If impeller in free of debris, inspect housing o-ring, diffuser o-ring, drain plug o-ring, and shaft seal (if any one of these parts as failed, this pump will not prime and the filter will have no pressure)
6. If all these things check out, then it is possible you have a suction side plumbing clog. (is the skimmer and main drain protected by screens? if so, a clog is very unlikely)

Note: the most common cause of a loss of "prime" on a pump is a failed shaft seal. It is cheap and easy to replce.
You will not want to remove the impeller or do any serious work on this pump unless you have replacement o-rings for the internals. New o-rings and seals is what allows these pumps to work properly.

Hope this helps
If this post helped you, please take the time to vote positively for me on this site.
thanks,
adam

Need more help? adamh@newconceptchem.com

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After you have the pump broken down. Check for a screw in the center of the impeller. If it has one then you will need to remove it. This will be a left handed screw. If that is done then you will need to remove the back of the motor or the small center plate on the back. Then the shaft will accept a wrench to hold it with. Then you should be able to unscrew the impeller with water pump pliers or a large basin wrench. The brass threads on the impeller will kind of stick to the steel of the shaft so it is just a matter of breaking it free, then it will spin easily.
I usually put a screwdriver in the left side of the impeller and give it a sharp smack downward with a hammer.
There are two methods, good luck.

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1 Answer

How do i remove the impeller from a dynamo pool pump ?


WITH LOTS OF LUCK . THEY SCREW OFF(OFF TO THE LEFT LOOKING AT THE IMPELLER SO COUNTER CLOCKWISE ) VICE GRIP OR SCREW DRIVER ON SHAFT TO HOLD IT, THING IS IF THE SHAFT IS RUSTY YOU HAVE A REAL GOOD CHANCE OF BREAKING IT AND IMPELLERS CAN BE HARD TO FIND.. THE SEAL SHOULD BE # 1000 FOR THAT PUMP... BEST OF LUCK.. J

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