Part # UST1252
Warranty 1 Year
Dimensions 16" L x 8.5" W x 6.5" D
Voltage 230, Max Amps 230V = 11.2, Single Speed, Round Flange, RPM = 3450, Threaded Shaft, Frame = 56J Used on the following models: Hayward Max Flow, Hayward Super Pump, Hayward Super II, Hayward Northstar and Jacuzzi Magnum pumps.
Note: NOT California or New York Title 20 Compliant.
California and New York Title 20 Compliant Option:
Variable Speed - NPTT270
Dual Speed Option (NOT California Title 20 Compliant):
I have a 2 year-old UST1252 motor. I believe the start capacitor is failing - perhaps the run capacitor as well. The pump generally does not start (hums and then shuts down and/or breaker trips) the first time after sitting for a while. Flow seems good once it runs and the impeller seems to move freely (I have only reached in through strainer side, have not removed the pump (yet). All that said, can you tell me the size/ratings for the capacitors? Thanks! Ken
Reply
Hi Ken, The A.O. Smith (UST1252) uses a Run Capacitor 30 MFD 370V (5VR0303) and Start Capacitor 36-43 MFD 120V (BC-36).
Reply
I am looking to replace a pool motor UST 1252. Found in on your webpage along with tune-up kit. I was having pump leak problems at the seam between pump and main housing. Thinking of replacing at same time. Do you have a complete kit or only parts ?
Reply
Hi Mike, we may have a kit but we would need to know the make and model of your pump. This should be something like Hayward Super Pump, Hayward Super II, Jacuzzi Magnum, etc.. Could you please email back with your pump details.
Reply
I have a UST 1252 motor connected to a Hayward Super II Pump. This motor is about 2 years old. It has begun to leak around the top of the seal between the motor and pump. I did replace the seal using your GO kit, but it made no difference. Cleaned the surfaces real well and the bolts are tight. It is a fair amount of leakage and definitely from top area, not the bottom. Suggestions/causes? Thanks: Ken
Reply
The Super 2 series has been known to get leaks at the bolts where the housing meets the motor. The bolt ports are known to separate from the housings. If that is the case then you can use the pump housing repair tap set part number 5110-22.
Reply
Hi, again: Related to the question about the leakage below. The inserts appear to be fully seated, and the leakage appears come from mostly the very top center area - between two bolts. Any other possibilities? The pump itself is about 11 years old, but not sure what would have caused it to start leaking suddenly. Thank you; Ken
Reply
If the seals have been replaced and lubed then the only other possibilities will be those bolt inserts or the housing has been warped to the point that they do not seal flush with one another.
Reply
hi, i have a in ground pool about 38000 gallons i am using a haywood pump 1 hp the water flow is horrible. I can not turn on all jets (7) 2 floor-3 on the wall-2 at the steps-not enough pressure to push things to the skimmers. I want to upgrade to a 2.5 hp thinking it would be better but i noticed the rpms are the same what are your thoughts.
Reply
John, Any single speed pump will have the same rpms (3450). If you want to increase the horse power, you need to make sure that your filter and plumbing can handle the increased flow.
Reply
Less than 1 hr
Screwdriver, Pliers, Socket Set, Adjustable Wrench
Remove 4 exterior Motor to pump bolts
Remove next 4 bolts on bezel
Loosen rear metal cover screws
Remove impeller by securing the driveshaft nut and turning the impeller
Remove next two covers attached to motor
Turn off breakers
Remove electrical
Replace gaskets, seals and impeller spring
Reassemble in reverse with new motor
The Most Recent Reviews
(5 out of 5 stars)
Reviewed By: Inyo Customer ()
quiet and easy to install
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(5 out of 5 stars)
Reviewed By: Inyo Customer ()
Such a excellent quality product. Very strong motor!!
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(5 out of 5 stars) Works great and very easy to install as a DIY
Reviewed By: Inyo Customer ()
Works great and very easy to install as a DIY
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(5 out of 5 stars) Great motor at the Best Price
Reviewed By: peejmeister from Lucas, TX ()
Pros: Great price, quiet motor.
Although there was an initial glitch in getting this shipped, the Support team expedited it and got it out shortly thereafter. The motor installed easily (following the great how-tos on this site) and runs like a champ, and is extra quiet. I would recommend this motor for any application it fits. I've been very satisfied with its performance.
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(4 out of 5 stars)
Reviewed By: James L. from Kansas City mo ()
Great motor for the money
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2 0
(4 out of 5 stars) Great swimming pool filter pump motor
Reviewed By: Janice T. from Franlkin Lakes, NJ ()
Pros: Reasonably quiet, long life.
Cons: Impeller removal is difficult and dangerous
The motor is great. I had to replace it for my filter pump only after 14 years of hard use. The motor could use an improvement where you have to hold the motor in place to remove the impeller. The back assembly needs to be removed and the starting conductor as well. I feel it could be easy to damage some of the parts in order to hold the motor in place while unscrewing the impeller. They could provide a small slot where a wrench can be inserted away from the conductor and wires.
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(5 out of 5 stars) swimming pool pump motor
Reviewed By: Dawn R. from Houston, TX ()
Pros: Shipped quickly and received on time
Cons: none
This motor replaced the old one exaclty. No problems runs perfectly.
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(5 out of 5 stars)
Reviewed By: Penny M. from Milford,TX ()
Pros: Fast Shipping, Item In Stock
Cons: Price
Item shipped fast arrived on time and was exactly what I needed.
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(5 out of 5 stars) Good motor
Reviewed By: Kawana from Los Gatos ()
Pros: Easy swap
Cons: none
Quick, easy, and cheap... what more can you say? great motor.
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2 0
(5 out of 5 stars) Great pump motor price!
Reviewed By: Handy Man from Sebring, Florida ()
Pros: Great Price, Great Research Information!
Cons: None
Motor was researched at this website and the information was right on, using the pumps' make and model. I will recommend this site to my neighbors and friends!
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(4 out of 5 stars) Pleased
Reviewed By: Tripod from Las Vegas ()
Pros: Quiet, Easy Install, Looks to be good quality
Cons: Longer than existing motor, almost did not fit.
This motor adapted well to my situation and so far is working well. Quiet operation, but seems slightly under powered compared to the old motor.
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(5 out of 5 stars) Good motor replacement
Reviewed By: reggie25 from Pensacola, Fl ()
Pros: Easy to install
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(5 out of 5 stars) Great replacement pump motor
Reviewed By: 310K from Missouri ()
Pros: identical to old pump, had a better SF rating and runs much quieter than the previous pump even when new.
Cons: None
Took about 30 minutes to install and it has run flawlessly since. It is much quieter than the original pump even when it was new.
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1 0
(5 out of 5 stars)
Reviewed By: Georgia ()
Pros: excellent replacement motor
Fits and runs quiet.
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(5 out of 5 stars) Super Pump
Reviewed By: Bob S from Evans, GA ()
Pros: Great fit
Cons: none
Pump fits great and is easy to install. Price was reasonable.
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(5 out of 5 stars) Easy Pump to replace Thanks for the assistance and reference material
Reviewed By: golfertexas ()
Pros: Easy pump to replace - works great
Your site provided the reference material to replace this motor. The motor was a perfect fit and operating perfectly
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2 0
(4 out of 5 stars) Good economical pump motor.
Reviewed By: Groco from Indiana ()
Pros: Easy to install.
Cons: Hard to hold shaft when propeller is removed.
Installed this motor half a year ago. Easy installation and runs smooth ever since. It is a bit tricky to hold the shaft with a wrench when you take off or put on the pump propeller. You actually have to remore part of the governer in the connection compartment. But other than that it is a good motor.
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1 0
(5 out of 5 stars) Easy Install; Low Noise
Reviewed By: NJPooluser from East Brunswick, NJ ()
Pros: Good product
It arrived as it is promised. Installation takes about 1 hour. It is quite easy. After installed, it is running smooth and quite. I am happy with this purchase.
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203 12
(5 out of 5 stars) Excellent Pump Moter Replacement
Reviewed By: PoJo from Clarence, NY ()
Pros: Awesome fit - excellent replacement
Cons: none
Tip to get the impeller off the old pump moter: use a 7/16" open ended wrench - it slides in near the capacitor on the electrical side... rotate the impeller until the wrench slides into place at the end of the shaft and then one person holds the motor and the wrench while a 2nd person loosens the impeller off with bare hands by turning the impeller counter clock-wise.
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1 0
(5 out of 5 stars) Excellent replacement motor
Reviewed By: scott from Atlanta, GA ()
Pros: easy install, quiet performace
For years this company made motors for Hayward and these are great replacement motors for your super pump.
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