Today's pool pump motors are much more efficient. If you have an older pool pump or it's motor is running loud or just stop working, you'll want to consider replacing your pool pump motor. You do not have to replace the whole pool pump and as this guide will show, replacing your pool pump motor is not difficult. Although this guide is specific to a Hayward pool pump, most of the steps can apply to other models of pool pumps. Caution: You must ensure that the electrical supply agrees with the motor's voltage, phase, and cycle and that all electrical wiring conforms to local codes and NEC regulations. If you are unsure of this voltage or are unfamiliar with electrical codes and regulations, have an electrician wire your pump for you. Failure to wire the pump correctly can cause electrical shock or can damage your pool pump motor and void your warranty.
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Paul Posted: 4/12/2020
My pump motor starts up just fine, runs at a normal rate for a while then starts spinning at a much higher rate. After a few seconds I smell something burning. I suspect that the impeller has a lot of resistance (due to clogged water lines?) and after a while the impeller is slipping on the motor shaft. I dismounted the motor from the housing. When I momentarily run the dismounted motor the impeller rotates as expected. But how can I tell if the impeller is firm on the shaft or slipping under load? Thanks!Reply
InyoPools Product Specialist Matt S. Posted: 4/15/2020
If you can unscrew the impeller from the motor shaft, the nut is not slipping from the impeller. When I have seen impellers fail, if the threads give out, the impeller is going to get loose and rumble around the inside of the pump.When the motor starts to make this noise, does water flow rate change? Do you see large air pockets in the pump's strainer lid?Reply
Paul Posted: 4/25/2020
Thanks for your advice, Matt. After checking the impeller, I replaced the start capacitor but to no avail. I then replaced the motor and now I hear the sweet sound of gushing water. The original problem that I thought was a slipping impeller, was just due to a motor that was probably vibrating rather than spinning. :) Thanks! -PaulReply
ed Posted: 4/11/2020
I just put my motor and pump back together that I purchased from you. I noticed that you did not say how tight to make the bolts. I tend to overdo things and the seal is leaking. Brand new seal and I put 'pool and spa' lube on it. Also, you give a pattern of how to tighten the bolts, but nowhere on this page can I find the bolts numbered to follow that pattern. Can you help me?Reply
InyoPools Product Specialist Matt S. Posted: 4/21/2020
The below picture is a good pattern to follow when tightening the bolts. Disregard the number mentioned in the step and follow the sequential pattern shown in the guide. As for how tight they need to be, you can hand tighten them, then a half-turn or two with a wrench should be enough.Reply
Tamas Posted: 3/6/2020
I have a HSQ165 Pump and the motor has the following specifications: HP = 1.65 SF = 1.00 Volts= 115/230 Amps = 18.8/9.4 It's louder and louder every week. My pool holds about 10,000 gallons of water. What do you recommend for a replacement?Reply
InyoPools Product Specialist Matt S. Posted: 3/9/2020
Hello, I typed the HSQ165 from your comment into our search at the top of the page and was provided two results, the HSQ165 or the ECM15SQU. The HSQ165 is the single-speed like for like replacement; the ECM16SQU is the variable speed replacement which costs more money but is more reliable, cost-efficient, and quieter when running at lower speeds.Reply
Samuel Young Posted: 1/13/2020
I have a Pentair Whisper Flo WF-28 motor that I like to replace, and like to find a quieter model. What do you suggest? 3 Thanks!Reply
InyoPools Product Specialist Matt S. Posted: 1/13/2020
The preferred replacement is the A.O. Smith V-Green 2.7 HP Square Flange 48Y Variable Speed Motor - ECM27SQU. To complete the motor installation, you will need the gasket kit for the Pentair WhisperFlo which is the GOKIT32 or GOKIT32SALTReply
Samuel Young Posted: 1/14/2020
Will V-Green 1.65 HP work in my case? I need a really quiet motor.Reply
InyoPools Product Specialist Hector F. Posted: 1/15/2020
As long as the total horsepower of the 1.6 matches your current total horsepower and you have 230 volts then yes it will work for your application.Reply
Samuel Young Posted: 1/15/2020
Thanks for the reply. Just want to make sure before I place my order: the V-Green 1.65 HP works fine with my existing Pentair WF-28 which is 2.0 HP (60 hz 1PH kW). Any pros and cons that you can think of if compare with V-Green 2.7 HP?Reply
InyoPools Product Specialist Hector F. Posted: 1/15/2020
The original Whisperflo WF28 has near a total horsepower of 2.2. With that said, the V Green 2.7 variable speed motor is the better fit. Your system may not need the entire 2.7 hp worth of strength however being able to dial the RPM's down still makes it a real good fit.Reply
Samuel Young Posted: 1/15/2020
How about the noise level? The main reason for me to upgrade to a variable one is the noise. Will the V-Green 1.65 H run more quietly than the V-Green 2.7 HP overall (say at the same rpm)?Reply
InyoPools Product Specialist Hector F. Posted: 1/15/2020
Unfortunately, none of the manufacturer specification data provides decibel levels of their motors running at certain rpm's. That may be something to request directly from Century A.O. Smith. Their number is 800-262-6484.Reply
Samuel Young Posted: 1/26/2020
If I buy the V-Green 2.65 HP variable speed motor to replace the WhisperFlo 1.5 HP motor, do I need to change the impeller (#073129) to a bigger size (#073130 for 2HP or #073131 for 3HP)?Reply
InyoPools Product Specialist Matt S. Posted: 2/10/2020
The pump can likely be run effectively with the original impeller. But if you are aiming for higher gallons per minute at high speeds, then you will need to upgrade the impeller. I suggest the 2.5 HP impeller (073130); the 3 HP impeller would be a little to big for the 2.7 HP V-GreenReply
John Posted: 10/22/2019
I replaced my 3/4 hp Century motor - SP3207Z1BE - with a B2852. I was not aware of the SF being 1.85 on the old motor and 1.25 on the new one. Needless to say, the pump was underpowered. Is there an alternative to replacing it with exactly the same motor? Can I use a pump with a higher HP and lower SF? Or one with a higher total HP? Thanks.Reply
InyoPools Product Specialist Matt S. Posted: 11/5/2019
Yes, you could go with a 1-Horsepower uprated motor. Or you could go with a similar 3/4 HP fullrated 3/4 HP Motor EE - Full Rate (B661, B2661). The total HP doesn't match exactly but the number is close enough for it to be negligible.Reply
Shawn M Sandau Posted: 9/18/2019
My pool pump works fine but my motor is making an awful noise and is hot to the touch. Pump model # is SP2605X7. Current pump is a UST1072, Model # C48J2N131C1C, 3/4 HP, SF 1.0, 3450 RPM, FR 56J, Volts 115/230 and AMPS 10.6/5.3. Is this the correct motor for my pump? and with it being hot and making that noise should it be replaced?Reply
InyoPools Product Specialist Robert M. Posted: 9/26/2019
Hello Shawn - Yes, the correct replacement would be motor model UST1072. Running hot is normal for the motors but the noise is a sign that the bearings are going bad. The motor will eventually stop working. It's hard to say how long it will run loud before quitting.Reply
Joe Posted: 8/6/2019
My motor sounds fine but is leaking. Model SP2607X10. Will I need to replace it or just replace a gasket?Reply
InyoPools Product Specialist Matt S. Posted: 8/7/2019
If the motor is working fine, but a leak is present, replace the offending gasket.Reply
Steven Posted: 7/25/2019
What replacement motor is for an A.O. Smith SP3207Z1BE, part 7-196235-24, Serial 257093M, FR Y56Y, Type CP, H/P 3/4, SP 1.85, Code E, RPM 3450, Volts 115/208-230,Reply
InyoPools Product Specialist Matt S. Posted: 7/30/2019
The correct replacement for your Tristar is the Hayward Motor, 3/4hp Full Tristar 115/208-230v - SPX3207Z1BER.Reply
Brett Posted: 6/24/2019
Can’t get my motor out after I removed all four bolts. It moves about 1/2” but won’t slide all the way out any suggestions?Reply
InyoPools Product Specialist Matt S. Posted: 6/26/2019
Did you remove the impeller from the end of the motor shaft?Reply
Mike Posted: 6/13/2019
What motor should I replece by Hayward SP2607X20 motor with and what gasket kit?Reply
InyoPools Product Specialist Matt S. Posted: 6/14/2019
Please verify the model number SP2607X20. The numbers in it contradict one another; it would either be 2607X10, or 2615X20.Reply
Nancy Posted: 6/7/2019
We did all this but can’t get it to prime....? Could a gasket be not sealed correctly?Reply
InyoPools Product Specialist Matt S. Posted: 6/13/2019
A lid o-ring would be the first gasket to check. If you have a cartridge or DE filter, I would use the air relief valve to clear any air in the system. How To Determine Why a Pool Pump Won't PrimeReply
Stephanie Gargiulo Posted: 5/22/2019
You are a lifesaver! And a money saver! The step by step directions with pictures made changing the motor to my pump seem easy! Thank you, thank you, thank you!Reply
Adrianna Rodarte Posted: 4/6/2019
April 6, 2019 Hello; What motor should I replace my motor with it was an A.O. Smith model # K48N2PA102A2 HP 2, SF 1.3 , RPM 3450? I would also like one that is more energy efficient. Thank You AdriannaReply
InyoPools Product Specialist Matt S. Posted: 4/8/2019
Hello Adrianna - the replacement motor is the B843 2 HP Square Flange 56Y Full Rate Energy Efficient Motor. If you want a more energy efficient motor then you would need to go with something like the ECM27SQU - V-Green Variable SpeedReply
Anonymous Posted: 4/4/2019
a loud sound on a motor may be a bearing sound to identify place your fingers ontop of the motor and feel the motor casing. if it seems to rattle and the sound seems to align with the rattleing then you need a bearing replacement. unfortunately if the four bolts holding the motor together are rusted. you may need to replace the motor. the capacitor is also a cause of motor humming.Reply
Ron Posted: 1/14/2019
Hi. I have a Magnetek Century Centurion motor, CAT B122, part # 8-164299-22, 1 H.P., type CX, volts 230/115, amps SF 7.2/14.4, HZ 60, SF 1.40, time Cont., Code J, Frame L56C, Form KJM, Serial BP1-113,1081 pool pump duty mount Horiz with vent holes down. Do you have a direct replacement for this pump motor ? Do you have an more efficient version available? Mine is connected to 115 volts. thanks RonReply
InyoPools Product Specialist Robert M. Posted: 1/15/2019
Hello Ron - The energy efficient option for the B122 is model B653.Reply
Ron Johannes Posted: 2/3/2019
Hi. Are you able to offer a motor/pump package which uses the B653 motor? I only have 110 volt power available and need a total of 1.4 HP. thanks, RonReply
InyoPools Product Specialist Matt S. Posted: 2/4/2019
Hello Ron - Can you provide the model number of your pump housing? The B653 can be mounted to a few pump housing, which have varying flow rates. If we know which particular housing you have, we can find a similar pump model replacement.Reply
Ron Johannes Posted: 2/4/2019
Hi Matt S. The pump housing has P/N 351523. Below that the tag says "WTEND PMP RFP 590 .75F. serial no. 035139120003N. Basically, I want to replace our old motor/pump package that produces a total of 1.4 Hp and connects to 110V power. I want a more efficient motor than what we currently have which uses 14.4 amps. i have heard that motors which use a permanent magnet are much more efficient. My current motor is a Magnetek Century Centurion motor, CAT B122, part # 8-164299-22, 1 H.P., type CX, volts 230/115, amps SF 7.2/14.4, HZ 60, SF 1.40, time Cont., Code J, Frame L56C, Form KJM, Serial BP1-113,1081 pool pump duty mount Horiz with vent holes down.Reply