You are correct the capacitor is only used during starting the motor. I assume the motor is getting hot and shutting off. Check the discharge side, filters etc for obstructions, it appears something is causing the pressure to go a bit high.
SOURCE: Where can I find a replace thermal overload protector?
http://www.mypool.com/Products/Catalog/mo.asp for the capacitor.
See if there is another part number for that breaker (CET51 ABM).
SOURCE: My new AO Smith 2HP pool pump won't pump water, just hums
I'm guessing that you replaced the motor that goes to the pump, not the pump itself. You know the motor works just fine. Is the motor rotating in the correct manner(clockwise or counterclockwise) in relation to the rotation of the pump? Have you checked the pump to see if the impeller is working/rotating? Is the motor hooked up to the pump correctly, so that the motor is turning the impeller? Are all connections to the pump tight, so there are no suction leaks? Have you primed the pump and purged it of any air locks?
SOURCE: REMOVE IMPELLER FROM SHAFT A O SMITH PUMP MOTOR HIFLO
The impeller is threaded onto the motor shaft, take the back cover off and use a wrench to hold the motor shaft, then turn the impeller counter clockwise to remove.
SOURCE: I have an AO Smith SQ1102 pool motor that stopped
no. it sounds like its too late for your motor , no need for a pool pump motor repair kit ,there is one on ebay . but it sounds like your motor is toast if it blowing the breaker... hey i could be wrong . look for a shop that has free pool pump motor testing .use your zip code in your search..
as far as using the bearings off them threw bolt motors. do what ya got to do, but you might find that the front bearing is a bigger bearing .. i charge 85.00 to rebuild a 2.. but you must catch them befor its too late 2hp new = big $$$
best of luck .. and if'n i was any help ? push on them thumbs up to vote ... thanks jay..oh PRIME THAT PUMP !
SOURCE: my A.O SMITH booster pump for my pool has a
Your electric motor needs new bearings in it.. The capacitor gives the pump a kick to get
it going.
Hope this helps.
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