Polaris PB4-60 booster pump help

Dec 8, 2013
19
San Antonio, TX
Pool Size
20000
Surface
Plaster
Chlorine
Liquid Chlorine
Hello, my existing booster pump crapped out on me. I have owned the pool for 2 years so im not quite sure how old it was, but it looked pretty weathered and just stopped working the other day. I purchased a replacement and installed it identically to the previous. The replacement is pretty loud and clunky sounding, runs hot after a minute and shuts off. When it is running the Polaris operates just fine. What could my issue be? Bad pump?
 
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