What is Service Factor?
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Service Factor(SF) is a multiplier that when multiplied by the horsepower of the motor indicates the total permissible horsepower loading that may be carried when the motor is operating at rated voltage and frequency. The most important thing to remember when replacing a motor is that the replacement motor's horsepower times its service factor must be equal to or greater than the original motor's horsepower times its service factor. The Service Factor rating can be found on the motor label. See Step 4 of our How to Read a Pool Motor Label guide.
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Why do I need to purchase a new shaft seal?
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We strongly recommend replacing the shaft seal. The purpose of a shaft seal is to prevent water from running down the shaft of the motor and into the motor housing. Water will damage the bearings and cause the motor to fail. A new shaft seal should be installed whenever a motor is replaced. The motor manufacturer can deny the warranty if the motor fails to due to water damage from a faulty shaft seal. To find your shaft seal you will need to visit our Pool Pump Parts Page or the Spa Pump Parts Page and select your make and model.
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Why should I purchase a Tune Up Kit?
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A Tune Up Kit includes all of the essential replacement seals and gaskets for the pump. The seals and gaskets should be replaced when installing a new motor on your pump. New seals will prevent the pump from leaking water or losing the prime. A Tune Up Kit will protect your motor and ensure that the pump is working efficiently.
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I have a polaris pump ao smith part o-173840-23. It recentlt started a high pitch scream. Bearings ?? Something that can be easily replaced?
thanks
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Hi William, You can replace the bearings of your Polaris booster pump motor. You will need (2) A.O. Smith 203 Bearing (6203RS). We have How To Replace the Bearings in a Pool Pump Motor - Part I, How To Replace the Bearings in a Pool Pump Motor - Part II to assist you in replacing the bearings in your motor.
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Can you provide motor bearing stock numbers or sizes for replacement bearings on an AO Smith Polaris Pool Sweep motor. The Century catalog number is B625. Serial# is 26407CH, 3/4 hp, 3450 rpms, type CS, 230/115v, SF-1.5 ...thanks
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You can replace the bearings of your Polaris booster pump motor. You will need (2)A.O. Smith 203 Bearing (6203RS). We have How To Replace the Bearings in a Pool Pump Motor - Part I, How To Replace the Bearings in a Pool Pump Motor - Part II to assist you in replacing the bearings in your motor.
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Is this the correct motor to replace a Polaris PB 4-60 booster pump for my Polaris cleaner. These numbers are on the sku as well. Rb 061308446. Also, do You suggest anything else i.e. Orin's, etc? Thank you!
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Good morning
I need to replace a polaris motor 7-173848-23 what is the correct replacement ?
Thanks
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Hi Tony, This motor is the correct replacement motor for the Polaris Booster Pump p/n 7-173848-23.
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Do you have terminal board/switch for century motor part #0-173840-23, 3/4 HP?
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Hi Paul, The Motor Switch (15768150) is the correct terminal board/switch for the 0-173840-23 motor.
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I have a 1081 pool pump 0-173840-23 and it is shutting on and off while running. Is there a sensor that we can replace. We think it is overheating and shutting off then going back on when it cools down. We would like to order parts.
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I have this pump motor AO Smith B625 serial number 35010CH. It seems to be leaking water between the pump and the Volute. The motor is working fine but the polaris seems to be slow. Can you tell me what the part number for a Volute to fit this motor is as I can read the number on the paper attached to it.
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Good afternoon Terry, You need a shaft seal part# 5250-106 . I would also recommend changing the housing o-ring on the valute PART # 3262-17. If you need help doing this. You can reference are how to guide How To Change The Shaft Seal On A Polaris PB4-60 Booster Pump. If you need any other help. Feel free to ask. Happy Thanksgiving.
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I HAVE A MAGNETEK M CENTURY ELECTRIC BOOSTER PUMP CAT#B625 FRAME L56C HP 3/4 230/115 VOLTS THERMALLY PROTECTED KA WHAT MOTOR CAN I REPLACE IT WITH AS LONG AS IT IS NOT A LOUD MOTOR ?
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Hello, this is replacement motor here.
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I have a pump with part# 7-173840-23. Is this the correct replacement pump? Do I need an install kit?
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Bill, Based on your part number, this would be the correct replacement motor. In order to determine what seals you need, we will need to know the pump model number.
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pump motor will run for a few seconds then it will cut off. If I don't cut power it will try to start up again in a minute but it will only power up for a few seconds then cuts off again. The pump is a Century A O Smith Part # 0-173840-23. Any suggestions
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Hello, It sounds like the motor is wired for the incorrect voltage. Please note that this is a dual voltage motor (230/115v). It comes factory preset at 230v.
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I too have this exact same problem: pump motor will run for a few seconds then it will cut off. If I don't cut power it will try to start up again in a minute but it will only power up for a few seconds then cuts off again. The pump is a Century A O Smith Part # 0-173840-23.... but I doubt it is wired wrong as it has been working for many years.
If I order this motor does it include instructions on how to put it in the casing. I have never done this before.
Thanks
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I have a Nidec B625 3/4 hp pool cleaner motor that is leaking oil or grease out the back. Is this from the bearings and does that mean the bearings need to be replaced? Is this something that would be covered under the 1 year warranty? Also, is the capacitor something that would be covered under the 1 year warranty?
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My old PB4 booster pump is very noisy (my 2HP is quiet is 10X more quiet) and is still working. Is there anything I can do to lower the motor noise other and changing a new motor will make any difference?
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im about to order a B625 booster pump motor to replace my broken 7-173840-23. I want to be sure to purchase any other parts needed to complete the install. Do I need any seals or other?
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Good day, Yes if you have 173840 then the Booster Pump Replacement Motor - B625 will be the correct replacement. For the seals Polaris Booster Pump-PB4-60 (2011-Present)
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Sorry if this was already answered but is this the correct replacement part for a Century 778 jet pump duty (part 7-168217-23)?
Hi, Sean. Unfortunately, we do not have a replacement motor that cross-reference to that Part #.
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I am just trying to figure out the difference in the two motors in my cart (see attached), they appear identical except their price? Looking for a replacement for the attached motor picture.
This actually is a duplicate listing so both are the same.
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I have an A.O. Smith B625 booster pump that's 16 years old, tired and noisy. I want to replace it and I believe I also need the shaft seal as I have a slow water leak coming through the opening between the volute and the seal plate. What part number do I order to get the right seal? Also, does the existing motor stand come off so it can be swapped to the new motor?
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Help! What does E1 mean on the pump!!! My basement is flooding!!!
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Hi, Elizabeth. In order to assist you, I will need to know the make and model of the pump that is displaying the error code.
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I am replacing a polaris PB460 3/4 hp booster pump. what is the corresponding replacement pump and seal kit?
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Good Afternoon,There are two motors for this pump depending on the model year it was produced. Do you have the serial number off of your current unit? What is the model number off of the motor you are looking to replace?
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Is a replacement seal required when replacing this particular motor of my Polaris boost pump as it appears the shaft doesn't directly contact the pump?
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Hi, Rodney. The Pump Shaft Seal is required to be replaced.
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I am looking to replace my B625 that has burnt out. I was looking to avoid taking the plumbing off the prior pump and replace with the replacement motor. Is that possible and are there any other parts that I may need.
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Hello, the B625 is the correct replacement motor. For the seals, can you please advise of the model number on your plastic pump housing?
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Is this the correct motor for these pictures? Also, what seal(s) are required? This is a booster pump motor replacement.
Thanks in advance!
My pump is hard piped. Do I have to cut/remove the pipes from the pump head in order to just replace the motor?
Thanks in advance for your response.
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Hi, Thomas. You do not have to cut the pipes to change the motor.
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On the back side of a PB4-60 "Century" Pool Pump Motor there is a plastic cap that cover the rear shaft access. I need one to protect my motor from the elements. Last pool pump repair guy left it off.
How do I get one quickly?
Thank You,
Andy
Hi, Andrew. You can purchase a replacement Bearing Cap - 628932-002.
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Is this pump motor the correct replacement for a Polaris Halcyon PB4-60Q ? What pump kit should I also purchase?
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Hi, Danny. It is NOT, there is not a replacement motor that is currently available for that model pump. You will have to replace the entire pump with the PB460 model.
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Thanks for the info. I would also like your help in selecting a replacement motor for my pool pump. I am considering replacing both so that I would only incur one service call from the local pool dealer for installation. I currently have a Pentair Superflo pump. The specs on the motor are: Square Flange, Industrial class B, Volts 115/230, 1 HP, RPM: 3450 PH 1 Code J. Could you please recommend the appropriate replacement motor and also the Kit of seals and O rings for the installation? Thanks.
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Hi Danny, You will need to confirm the SF on your motor if your SF is 1.25 then you will need this 1 HP Up Rate Super Flo Replacement Motor and if your SF is 1.65 then you will need this 1 HP Full Rate Super Flo Replacement Motor. For either motor, you will also need this Super Flo Seal Kit. We put together this Video on How to Replace a Pool Pump Motor which you may find helpful when you tackle this project.
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IS this the pump I need. 0-173840-23 Century or A O Smith
Hi Larry, yes this is the correct replacement motor for your motor part number 173840. When replacing a pool motor we do suggest a Seal Kit. Could you send us a few photos of your pump so we can suggest the proper seal kit? If so then please take a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation for your seal kit.
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Hello,
Would this be a good replacement motor for Pentair Model LA01N? Thanks!
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Hello Ivan, Based on this information the Letro Booster Pump 3/4 HP Motor - B668 would be the correct replacement.
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Can you please tell me if this pump motor would be the correct replacement for my current booster pump motor (pictured)? Also, what other parts or kit will I need in order to replace this motor. Thanks!
The B625 is the correct booster pump replacement motor and in order to locate the proper seal kit or seals we will need to know the name or number of the front pump wet end model that the motor attaches to.
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Here is the sticker on the wet end...hope this will give you the info. Thanks!!
Hi David, You will require this PB460Q Shaft Seal
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uh oh....someone in chat yesterday told me it was Pump Shaft Seal OEM 3/4" - R0445500 and I ordered that one. Don't know if it has shipped. Is that one not going to work? I need the PB460Q instead? I've already ordered and received the motor. Thanks
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Hi David, I'm sorry about that! I just put in a $0 re-order for the correct part and will have that shipping out.
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what is the proper shaft seal for this motor
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Hi Randy, could you send us a few photos of your pump? Ideally, a wide shot showing the complete pump, including where the pipe goes in and out of the pump, and a second close up photo of the motor label. This would help us determine the proper replacement seals.
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What is the proper shaft seal for this motor and are there any other parts that need to be ordered to replace this motor?
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Thank you for the information on your motor. To better assist you, we will also need the make and model of your pump. This information is typically listed on a label on the housing area, opposite the motor. Once we have this information, we can better answer your questions/concerns. Please let us know if you need help locating this information on your pump.
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I'm trying to replace the shaft seal of a Century CAT B625 Serial 05619CH PART 0-173840-23
The seals type depends whether the pump is pre-2012 or current. How can I tell which year my pump was manufacured?
Thank you!
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Could you send us a few photos of your pump and motor? Please take a close up shot of the motor label as well as a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation.
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Does the Centurion 0-173840-23 need an external capacitor?
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The Centurion 0-173840-23 also labeled as the B625 does have an external capacitor which is shown as the hump on the motor as indicated on the product photos for this item.
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I need to replace my Pentair booster pump ...is this the correct part and all I need to order?
I am showing the correct replacement pool pump motor is the...Letro Booster Pump 3/4 HP Motor - B668I would also suggest replacing the following...Pump Shaft Seal 5/8" - PS-1000O-ring, Volute - LLA415
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I need a replacement pump for this old pump. It is a square flange. Inground pool. What would you recommend? Any other parts I will need to replace pump? Thanks
Hi Shannon, yes this is the correct replacement motor for your motor. When replacing a pool motor we do suggest a Seal Kit. Could you send us a few photos of your pump so we can suggest the proper seal kit? If so then please take a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation for your seal kit.
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Thanks for the quick response! Would like to see what you suggest for a seal kit. Attached a photo of all the pumps we have. Thank you for your help.
Hi Shannon, Thanks for the photos! Along with the B625 motor, you will also require this Polaris Booster Pump Shaft Seal and this Polaris Booster Pump Body O-Ring. I would also suggest a tube of Pool O-Ring Lubricant for the o-ring. We have also put together this Video on How to Replace a Polaris Booster Pump Motor which you may find helpful when you tackle this project.
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Need bearings for the motor advertised
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The B625 motor would require two 5270-31 bearings.
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I need to replace my polaris booster pump motor the part number is 8-14777-21, CAT NO B625, FR L56C...The motor number matches but I think the Frame number is different from the posts i've read...not sure the images I added are actually there...maybe they're too big?
Hello Eric. The Century motors Booster Pump model B625 is a compatible replacement for the Polaris PB-4. The frame identification is slightly different nut the replacement motor will bolt up correctly. It is recommended that the motor shaft seal and seal plate gasket be replaced at the same time. Attached please find information specific to both parts. Pump Shaft Seal 3/4" - R0445500 O-ring,Backplate for PB4-60 - R0536600
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Looking for a replacement Booster Pump.... mine died after almost 20 faithful years. Dont't see replace-in-kind, so any help appreciated.
Hello Shanna. If you wish to replace the motor only, the Polaris Booster Pump 3/4 HP Motor - B625 Polaris Booster Pump Shaft Seal 5/8" - P55 and O-ring, Bracket To Volute (258) O-Ring would be required to replace the A. O. Smith motor part # 0-173840-23. If you wish to replace the entire pump, the Polaris 3/4 HP Booster Pump - PB460 would be the replacement booster pump for your Polaris Booster Pump PB4-60 manufactured 1994-2011.
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I have a century motor that needs replacing but cannot find what motor is comparable. The model number is 8-107769-20. Can you tell me what would work for my basement well pump?
Hello, unfortunately we do not retail irrigation type pool pumps, parts and some motors. Your best bet would be to contact an irrigation supplier/retailer.
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