Not running, very hot. seems like the motor seized up.
YOU WILL NEED TO REPLACE THE MOTOR.
SOURCE: Leaky 4 HP hot tub pump seal AO SMITH motor, pump
If you have removed the impeller this is what you need.
Part number for your shaft seal is : 37400-0028s
Here is a link to the manual on how to install / remove this seal on this pump:
http://www.hottubs.com/content/pdf/Sta-Rite_Dura-Jet_S377(9-12-03).pdf
Refer to page 9.
This seal can be purchased anywhere on the internet. Just do a google search with only the part number. Many suppliers will come up. If you have trouble, I have a few and can make an E-bay sale for one.
Testimonial: "Thanks, and especially for the link to the manual. This is exactly what I needed. Mark"
SOURCE: Im replacing a 2 speed
to wire a single speed motor you use only the black, white and green wire. there is usually a wiring diagram on the side of the motor to show how this is done.
no wiring diagram then put the black wire on the L1 or H1 post and the white wire to the common and of course the green to ground
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