Question about AO Smith Pool Pump Motor 1HP Square Flange Swimming Pool Pump Energy Efficient motor

1 Answer

Seal plate stuck on square flange

I have removed bolts, impeller etc. I am replacing the existing motor with same model but cannot get the seal plate off the old one. HELP!

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  • Expert
  • 372 Answers

It sounds like the seal has a death grip on the motor shaft. Pick up the seal plate so the motor is hanging beneath it. (watch your toes) Holding it about waist high let it drop and then snatch it back up again. Kinda like getting a pillow in its case. The motor should drop out.

Posted on May 10, 2013

Testimonial: "it is a death grip, 'cause it refuses to come off. I bought another seal plate, the original manufacturer does not make them anymore, but after replacing literally everything it still is leaking. I replaced motor, shaft seal. I had to make the drill out part of the new shaft plate so maybe that is the new leaky prob. I would just like to use the original one, but cannot get it off the flange."

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Posted on Jan 02, 2017

john224
  • 1378 Answers

SOURCE: This June, I had to replace my strainer housing on

One or more of a couple issues is at play here. First would be the seal replacement. Even if you used the correct seal if you touched the surfaces or failed to install it properly it can and will leak. Second, inspect the housing around the seal fit and the stem of the impeller for cracks. A hairline crack is enough when placed under pump operating pressure to allow a leak. Somewhere in there is your solution.

John

Posted on Jul 17, 2010

Testimonial: "John: Hi! Thanks...maybe it could be the surface was touched....and maybe the spare motor had a worn seal. The fact that both were leaking in exactly the same place is a mystery. I took the motor I worked on to the pool vendor for an exam. Thanks for your feedback...it was helpful. ndmc"

adamh294
  • 310 Answers

SOURCE: Leaky 4 HP hot tub pump seal AO SMITH motor, pump

If you have removed the impeller this is what you need.
Part number for your shaft seal is : 37400-0028s
Here is a link to the manual on how to install / remove this seal on this pump:
http://www.hottubs.com/content/pdf/Sta-Rite_Dura-Jet_S377(9-12-03).pdf
Refer to page 9.
This seal can be purchased anywhere on the internet. Just do a google search with only the part number. Many suppliers will come up. If you have trouble, I have a few and can make an E-bay sale for one.

Posted on Nov 15, 2010

Testimonial: "Thanks, and especially for the link to the manual. This is exactly what I needed. Mark"

  • 106 Answers

SOURCE: Hi, I have a QC 1072

The impeller is just screwed on the shaft. COUNTERCLOCKWISE to remove. Some have a screw in the center attaching it to shaft. This is removed by by turning CLOCKWISE.(reverse threads) Remove back cover and secure shaft with a wrench. There are flats on the shaft to hold it. You might need a large pipe wrench to loosen impeller. Wrap with rag so you don't damage impeller.

Posted on May 18, 2011

MOTORWIZJ
  • 1338 Answers

SOURCE: new motor, will not start - only hums

voltage set right? motors come set from factory 240 v .. or you might have moved the start switch, it's at 6 0clock on the motor make sure its centered (back of the motor) shaped like a v.. looks like this.click on this
also might be a bad start or run capacitor..or a dud motor
hope this helps
jay the pool pump motor repair guy in longwood Florida

Posted on Sep 11, 2012

  • 372 Answers

SOURCE: Can I replace a 1 HP square flange pool pump motor that has a solenoid/capacitor on the outside of it with one that doesn't?

Yes. The one that doesn't have the capacitor on top has it inside.

Posted on Apr 20, 2013

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1 Answer

Replace usq1202 pump


It looks like since you have a square flange motor you have either a Tri-Star, a Maxflo II pump or other model by Hayward.. Either way the process is very similar.
Replace the seal, o-rings and gaskets with new ones. Use a teflon based lubricant on all rubber parts, including the seal, but try not to get any on the ceramic (white ring).
  1. Shut power off at the breaker.
  2. Remove the bolts connecting the motor plate to the pump housing.
  3. Back motor assembly out of pump housing making sure that the diffuser and its gasket also come out.
  4. Disconnect the electrical supply.
  5. Remove the diffuser if still covering the impeller, (there may or may not be screws to remove).
  6. Remove impeller ring (if one).
  7. Holding the impeller firmly remove the impeller screw. This is in the center of the impeller and has a REVERSE THREAD, meaning turn screw clockwise to loosen.
  8. Remove the end cap on the opposite end of the motor and use a 9/16" open end wrench to hold the shaft from turning.
  9. Unscrew the impeller CCW.
  10. IMPORTANT -- Note how both parts of the seal are oriented to assure the new one is installed likewise, then pull off the seal and seal plate, and discard old seal parts. Also note which way is UP on the seal plate relative to the motor.
  11. Reassembly to the new motor is basically reversing the steps above.
NOTES:
The impeller ring (if one) is a ring with a lip around one side. This goes over the center of the installed impeller with the lip facing outward, away from the impeller.



Do not over tighten the bolts! You can damage the pump by doing this. Snug plus about a quarter turn is plenty. In the event you have leaking after startup, open the pump back up and check you housing gasket.

Jan 20, 2013 | Smith 2hp Pool Pump Motor A O Electric...

1 Answer

Winding noise with some water leaking from the motor seal. Water still flowing but sounds laborous.


The shaft seal more likely than not needs to be replaced. If your shaft seal has been leaking for any length of time, the bearings could be damaged and this should be replaced. The whisperflow uses a PS1000 shaft seal and is fairly easy to replace (most seals available online or at most swimming pool retail stores). It is best advised not to run the pump until you have had this inspected by a licensed pool technician or have changed out the seal.

1) Make sure breaker/power to pump is off. 2) Remove the six bolts holding the wet end to the seal plate. 3) Remove the diffuser to expose the impeller. 4) Remove the screw in the middle of the impeller by turning clockwise (left hand threads). 5) Remove the dust cap at the rear of the motor and use a wrench to hold the shaft while you remove the impeller by turning counterclockwise. 6) Once the impeller is off, remove the four bolts holding the seal plate to the motor. 7) Press the old seal out of the seal plate and clean it thoroughly. Remove the ceramic part of the seal from the impeller and clean it thoroughly as well. 8) Apply a thin coat of lube (I prefer Magic Lube or Lube Tube) to the seal plate and impeller where the new seal will go. 9) Remove the new PS1000 shaft seal from the box (being careful *NOT* to touch the ceramic or carbon face with your fingers), press the metal part into the seal plate carefully, try not to bend the metal and make sure its completely seated against the seal plate. 10) You can now install the seal plate back onto the motor and secure with four bolts. Press the ceramic part into the impeller, use cardboard or paper between your fingers and the ceramic face. 11) Once you have seated the seal into the impeller, hold the motor shaft and thread the impeller on until snug, then reinstall the stainless screw, remember it is left hand thread so you'll have to turn it counterclockwise. 12) Reinstall the diffuser over the impeller and then install the wet end onto the seal plate using the six bolts, don't overtighten them.
Check the pump for operation and you should be good to go!


Dec 07, 2010 | Pentair 011515 WhisperFlo FullRated Energy...

1 Answer

Pump seal is leaking water. I removed the screws holding the pump together. How do I remove the impellor to get at the seal?


This is from one of my previous posts, may be some extra steps, but should cover what you need... Turn off the electric first. Now split the pump in two by removing the large clamp or 4-6 bolts holding the two halves together. (not the 4 bolts holding the motor to seal plate, but the the bolts holding the seal plate to the seal plate housing). Once you remove the clamp or bolts, the motor with seal plate, diffuser, and Impeller can all be pulled back away from the pump. Then disconnect the electrical from the motor and you can pull the motor with the seal plate, and impeller all the way out and work on it. To get to the impeller, you need to remove the diffuser (plastic housing that goes around the impeller) usually by a series of 3 to 6 small screws. 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 tail piece 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, or removing the capacitor for even easier access. Once you've locked the shaft, you can just unscrew impeller. If the impeller has a bolt or screw in the middle remove that first. this screw will 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 (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. Make sure to replace the shaft seal, and use a tiny bit of pool lube on the rubber parts when installing, but keep the white ceramic, and black graphite surfaces 100% free of any dirt, grease, etc while working with them. Installation is pretty much just the reverse. Install half the seal into the seal plate. Install the seal plate onto motor and bolt into place. Install other half of seal onto shaft. Screw impeller onto shaft and install screw (if one was there to start with) in center of impeller (reverse thread). install diffuser over impeller make sure it is centered and doesn't rub the impeller hub. Install new diffuser and valute o-rings. Hookup wiring before re-attaching to rest of pump. Clamp or bolt back together. Pour plenty of water into pot to prime and flip the motor on for a sec or two. Pour some more water. Install pot lid. You should be good to go. Keep in mind there are many different pumps and some variations to the above instructions, but the above should cover most situations. 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!

Oct 03, 2010 | Dynamo ABOVEGROUND POOL PUMP - 1.5HP -

1 Answer

How do I remove existing motor and replace it with a new one ? Hayward 2.0 hp # SP2615X20 Thank you


Turn off the electric first. Now split the pump in two by removing the large clamp or 4-6 bolts holding the two halves together. (not the 4 bolts holding the motor to seal plate, but the the bolts holding the seal plate to the seal plate housing). Once you remove the clamp or bolts, the motor with seal plate, diffuser, and Impeller can all be pulled back away from the pump. Then disconnect the electrical from the motor and you can pull the motor with the seal plate, and impeller all the way out and work on it. To get to the impeller, you need to remove the diffuser (plastic housing that goes around the impeller) usually by a series of 3 to 6 small screws. 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 tail piece 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, or removing the capacitor for even easier access. Once you've locked the shaft, you can just unscrew impeller. If the impeller has a bolt or screw in the middle remove that first. this screw will 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 (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. Make sure to replace the shaft seal, and use a tiny bit of pool lube on the rubber parts when installing, but keep the white ceramic, and black graphite surfaces 100% free of any dirt, grease, etc while working with them. Installation is pretty much just the reverse. Install half the seal into the seal plate. Install the seal plate onto motor and bolt into place. Install other half of seal onto shaft. Screw impeller onto shaft and install screw (if one was there to start with) in center of impeller (reverse thread). install diffuser over impeller make sure it is centered and doesn't rub the impeller hub. Install new diffuser and valute o-rings. Hookup wiring before re-attaching to rest of pump. Clamp or bolt back together. Pour plenty of water into pot to prime and flip the motor on for a sec or two. Pour some more water. Install pot lid. You should be good to go. Keep in mind there are many different pumps and some variations to the above instructions, but the above should cover most situations. 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!

Oct 02, 2010 | Hayward 2HP Pool Pump Motor A O Smith...

1 Answer

Looking to replace my elec. motor on my hayward pump # sp3605x7. ser# 640c30. not sure how you..remove the motor from the pump.did not see a set screw? thank you steve 978-606-9706.


Turn off the electric first. Then just remove the 4-6 bolts and separate the back half from the front. The motor with seal plate, impeller, and diffuser can all be pulled back away from the rest of the pump. Now disconnect the electrical from the motor and your can pull the motor with the seal plate, diffuser, and impeller all the way out and work on it. You need to remove the diffuser (plastic housing that goes around the impeller) sometimes this is held by a series of 3 to 6 small screws, other times it just slips over the impeller. 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 tail piece 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 one of the components (not sure exact part off top of my head have to look at it) 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. Make sure replace the shaft seal, and use a tiny bit of pool lube on the rubber parts when installing, but keep the white and black ceramic surfaces 100% free of any dirt, grease, etc while working with them. The instructions above a based on a very similar model and may vary slightly, let me know if something doesn't look/sound right and I'll clarify. Good Luck

Sep 24, 2010 | Hayward Single Speed 34 Hp Swimming Pool...

1 Answer

How do I remove the pb460 booster pump in order to install the new one? Does the water have to be turned off from the pool?


You are trying to remove the pump so you can replace the impeller correct?
To remove the impeller you do not need to remove the whole pump. Turn off the electric first. Then just remove the several bolts and separate the back half from the front. Then disconnect the electrical from the motor and your can pull the motor with the seal plate, and impeller all the way out and work on it. 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 one of the components (not sure exact part off top of my head have to look at it) 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. Make sure replace the shaft seal, and use a tiny bit of pool lube on the rubber parts when installing, but keep the white and black ceramic surfaces 100% free of any dirt, grease, etc while working with them

Sep 17, 2010 | Polaris Pb460 Polaris Booster Pump...

1 Answer

Im getting a loud buzzing noise when the pump is running


could be an obstruction in the impeller, or the bearings going out. You can split the pump in two be removing the large clamp or 4-6 bolts holding the two halves together. (not the 4 bolts holding the motor to seal plate, but the the bolts holding the seal plate to the seal plate housing. once you remove the clamp or bolts, the motor with seal plate and impeller and diffuser can all be pulled back away from the pump. You need to remove the diffuser (plastic housing that goes around the impeller) usually by a series of 3 to 6 small screws. Now you can easily try and spin the impeller and check for obstructions that might have bound it. If you do not see anything stuck in the impeller, then the noise is likely coming from the motor (probably the bearings) you can replace the motor, or have it rebuilt. if your not gunna rebuild it you can deal with it as long as the noise doesn't bother you and the motor is not getting too hot

Sep 15, 2010 | ADVANTAGE Waterway SVL56 Pool Pump...

1 Answer

How to install the motot?


Turn off the electric first. Now split the pump in two by removing the large clamp or 4-6 bolts holding the two halves together. (not the 4 bolts holding the motor to seal plate, but the the bolts holding the seal plate to the seal plate housing). Once you remove the clamp or bolts, the motor with seal plate and impeller and diffuser can all be pulled back away from the pump. You need to remove the diffuser (plastic housing that goes around the impeller) usually by a series of 3 to 6 small screws. Then disconnect the electrical from the motor and your can pull the motor with the seal plate, and impeller all the way out and work on it. 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 one of the components (not sure exact part off top of my head have to look at it) 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. Make sure to replace the shaft seal, and use a tiny bit of pool lube on the rubber parts when installing, but keep the white and black ceramic surfaces 100% free of any dirt, grease, etc while working with them. Installation is pretty much just the reverse. Install half the seal into the seal plate. Install the seal plate onto motor and bolt into place. Install other half of seal onto shaft. Screw impeller onto shaft and install screw (if one was there to start with) in center of impeller (reverse thread). install diffuser over impeller make sure it is centered and doesn't rub the impeller hub. Install new diffuser and valute o-rings. Hookup wiring before re-attaching to rest of pump. Clamp or bolt back together. Pour plenty of water into pot to prime and flip the motor on for a sec or two. Pour some more water. Install pot lid. You should be good to go. Keep in mind there are many different pumps and some variations to the above instructions, but the above should cover most situations. if something doesn't sound right let me know by commenting on this post, or sending email and I'd be glad to clarify. Good Luck!

Aug 03, 2010 | AO Smith Pool Pump Motor 1HP Square Flange...

1 Answer

Removed four bolts,can not get motor off


depending on the pump you have, you'll need to remove the seal plate from the wet end and remove the impeller before you can remove the motor.

Nov 14, 2009 | AO Smith Pool Pump Motor 1HP Square Flange...

1 Answer

1hp whisperflow pump, seal change. How?


Make sure breaker/power to pump is off. Remove the six bolts holding the wet end to the seal plate. Remove the diffuser to expose the impeller. Remove the screw in the middle of the impeller by turning clockwise (left hand threads). Remove the dust cap at the rear of the motor and use a wrench to hold the shaft while you remove the impeller by turning counterclockwise. Once the impeller is off, remove the four bolts holding the seal plate to the motor. Press the old seal out of the seal plate and clean it thoroughly. Remove the ceramic part of the seal from the impeller and clean it thoroughly as well. Apply a thin coat of lube to the seal plate and impeller where the new seal will go. Remove the new PS1000 shaft seal from the box (being careful not to touch the ceramic or carbon face with your fingers), press the metal part into the seal plate carefully, try not to bend the metal and make sure its completely seated against the seal plate. You can now install the seal plate back onto the motor and secure with four bolts. Press the ceramic part into the impeller, use cardboard or paper between your fingers and the ceramic face. Once you have seated the seal into the impeller, hold the motor shaft and thread the impeller on until snug, then reinstall the stainless screw, remember it is left hand thread so you'll have to turn it counterclockwise. Reinstall the diffuser over the impeller and then install the wet end onto the seal plate using the six bolts, don't overtighten them.

It is a good idea to replace the tank o-ring when taking to pump apart, but if the o-rings are in good condition, just apply a light coat of lube and reuse them.

This is a general guide for replacing a seal, if you have trouble removing the impeller, you may need an impeller wrench and a tool to hold the motor shaft.

I hope this helps, if you have any specific questions, email me at mail@leisurepoolservice.com

Oct 28, 2009 | Pentair Pool & Spa

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