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How to remove brass impeller on B124 keyed shaft 2 h.p. motor?

Posted by Anonymous on


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Posted on Jan 02, 2017

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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

  • 176 Answers

SOURCE: how to remove impeller from motor to replace

If it's a separate shaft, it requires a puller tool, but first you have to remove a nut that holds the impeller to the shaft. If the shaft is part of the impeller, meaning that it is a one piece fabrication, then there is nothing you can do about it. You haven't even stated where does this impeller come from, a washing machine, a water pump, etc.

Posted on Sep 18, 2009

  • 124 Answers

SOURCE: water works spa pump- need to remove wet end...

Most of these are reverse threaded. There should be a place on the shaft that is flat on 2 sides a 1/2" or 9/16" wrench will fit into the slots. If not look at the back for a place to use a hex key. Hold the wrench/ hex key stationary with the Impeller facing you turn clockwise.
I know this sounds backwards but it should work.
Hope this helps
Please leave feed back

Posted on Dec 01, 2009

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SOURCE: 1 HP electric motor hums but not turning.

check for a re-set button somewhere on the motor housing.

Posted on May 04, 2010

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SOURCE: I am trying to remove the impeller on a SP158015,

The instruction below may vary slightly for your model pump, but should give you the info you need to get the impeller off and get to the seal... To remove the impeller you need to lock the motor and unscrew impeller. Depending on the motor, you remove a cap in the middle of the tailpiece and hold with a wrench, or remove a cap that covers the whole end and grab the shaft with a wrench (usually 7/16") by sliding it under the thermal overload switch and then turning impeller. If the impeller has a bolt or screw in the middle remove that first. It should be reverse thread so make sure you don't turn the wrong way and break or strip. If there is no screw, or after you've removed it, just spin the impeller off (it should be counter clockwise standard thread). If you can't do it by hand and assuming you don't have an impeller wrench, be very careful and use a large pliers, pipe wrench, or strap wrench to loosen it. After that you unbolt the motor from the seal plate, pull the seal plate away from motor (this removes half the seal), and then pop the other half of the seal from the seal plate. Hope this helps. If you need further assistance post a reply in the comments, and don't hesitate to leave a good thumb rating if you found this helpful. Thanks, and good Luck!

Posted on Oct 16, 2010

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How to remover the impeler in a 2hp Pinnacle?

Thank you for posting your question here on

Removing the impeller requires you lock the shaft as you turn the impeller off counter-clockwise. You will also need to check for an impeller screw in the center of the impeller inlet. If a screw is present they are usually left hand thread. Back out the screw first, then proceed to remove the impeller.

To lock the impeller you will have to remove the motor end cover or a cap covering the shaft end depending on which version your particular motor has. Look at the end opposite the pump and imagine a shaft from one end to the other right in the center.

Once you remove the cover you will see a slot for a screwdriver, a flat for a wrench, a hex hole for a hex key or some combination of these. Lock the shaft and spin off the impeller. Some are so tight you will end up breaking them in the process. Simply replace it and the seal. Be sure the motor shaft is in good enough condition to allow the new seal to work properly. If too much shaft material has rotted away the new seal will leak soon after it is installed; you would need a new motor at that point.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. You may also contact me thru our website at Positive feedback is appreciated once your problem is solved!


Apr 10, 2011 | Pentair Pinnacle 2 - Hp In Ground Pool...

1 Answer

How do you pull the impeller off of the shaft for a Dynamo 1-1/2 sn 1-22-EO3?

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.

Sep 27, 2010 | Dynamo ABOVEGROUND POOL PUMP - 1.5HP -

1 Answer

Have already disassembled down to impellar. how does the impellar come off

Check to see if you have a center screw in the impeller. If you do then it will be a left handed screw. You will turn it clockwise to get it out. Then I will usually take a screwdriver and insert it on the left side of the impeller. Then give the screwdriver a good sharp hit downward to break the impeller free, then just unscrew it. The brass center on the impeller will stick to the stainless steel on the motor shaft and you just have to break it free.
If this dosn't work then remove the back of the motor and get a wrench on the back of the shaft, then find a way to grab the impeller and unscrew. Good luck

Sep 06, 2010 | Flotec 1 - 1/2 Sprinkler Pump Composite...

1 Answer

I have a ao smith sp 1520 2 hp pool pump. the impeller broke off the shaft. how do i change the broken impeller please

Remove the back of the motor ... you will find there are flats on the shaft. Put your 7/16 or 1/2 open end wrench there and with your other hand, spin off the broken impeller.

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1 Answer

2 hp Swimming Pool - Jet / Well Pump Motor / Century B124: Water pump from swimming pool to filter lost it's ...


May 17, 2010 | AO Smith 2 hp Swimming Pool - Jet / Well...

1 Answer

The pool pump cuts out sometimes when it is pumping warm water from the solar heating pipes located on the garage roof

sounds like the motor is too small for the job.? has the motor been changed? if not -have the run capacitor checked by your local pool pump motor repair guy also the SF and HP must match the impeller size this number can be found on the front of the impeller and SF,HP can be found on the motor ID PLATE. gather all this info when you buy a motor or impeller .. very important ! . if you find you are stuck with you new motor the FIX is to get the impeller that is right for your motor

Jan 26, 2010 | AO Smith 2 hp Swimming Pool - Jet / Well...

1 Answer

How do you remove the motor from a Flotec FPS5172, 1-1/2 HP.

The impeller screws on the motor shaft. First replace the through bolts in the motor. These are the long bolts, they will just cause headachs. On the back of the motor their will be a place to hold the shaft from turning, If you hold the shaft the impeller just unscrews. If you look in the center of the impeller it may have a set screw holding it to the shaft. If you have one of these it will be a left hand screw. Then you will need to break the impeller free as the brass that holds the impeller on will stick to the stainless steel of the shaft. Don't let how tight this is fool you when you put this back together it just goes on hand tight. Good luck

Nov 23, 2009 | Flotec 1 - 1/2 Sprinkler Pump Composite...

1 Answer

We are having issues getting the impeller apart on the jacuzzi magnum force pool pump and need some instructions on how to proceed.

I believe the jacuzzi pump impeller has a locking screw directly in the middle of the impeller. You'll have to turn it clockwise to remove it. Then you'll need to remove the cover from the back of the motor using a 1/4" nut driver. Depending on the motor, you should be able to use a 7/16" open end wrench to hold the motor shaft from turning as you turn the impeller counter-clockwise to remove it. Some motors are different, some have a keyed shaft or require a special tool to hold the shaft while the impeller is removed. Hope this helps.

Nov 22, 2009 | Jacuzzi MAGNUM FORCE POOL PUMP - TWO SPEED...

1 Answer

How do i remove impellor

The impeller in my 4 HP, 2-speed Waterway Executive High Performance 56 pool & spa pump has a brass coupling embedded in the back side. This coupling can be unscrewed from the motor shaft by keeping the shaft from rotating while turning the impeller in the reverse direction. Then the seal can be tapped out.

Oct 08, 2009 | Waterway Spa Pump Executive 56 Frame 4hp...

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