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How to remove the impeller from a Masport Onga pump to access and replace the seal between the pump and the motor.

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Hello Colin. The impeller is screwed onto the motor shaft. To remove it you will probably need an assistant. Hold the motor shaft at the fan end and unscrew the impeller. Remember the old saying that right is tight and left is loose. I recommend removing the fan cowl along with the fan. This will allow you to hold the shaft with a pair of vise grips. After you remove the impeller, inspect the shaft sleeve as that too may need to be replaced, along with the seal assembly. J.

Posted on Aug 25, 2010

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The impeller is screwed on to the motor shaft; to remove it you need to hold the motor shaft at the fan end so that you can unscrew the impeller - normal right hand thread. Holding the shaft can sometimes be quite difficult so a good suggestion would be to remove the fan cowl along with the fan, this will enable you to secure the shaft with a small pipe wrench or similar. Once you have the impeller removed it will be possible to ascertain what steps need to be taken next - you may need a new shaft sleeve as well as a new mechanical seal assembly.
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1 Answer

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1 Answer

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