Shutoff valves leak

Sand is old or multiport valve has gone bad

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The cause for those parts to fail is almost always running dry or poor water flow. Check for things like partially closed valves, dirty filter(s), leaks in the pump allowing cavitation or poor plumbing with too many elbows stacked together as the cause. Your solution(s) will vary depending upon the cause of the failures.

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John

More often that not you probally had a leaking seal and the water is causing the bearing to rust and make noise. At this point you will need to have the motor rebearingd or get a new motor. depending on the age and condition of the one you have.

It should eventually purge just by running. If it continues, you could have a suction leak in your piping. Check drain plugs in pump. Check strainer basket cover and gasket for leaks. Check any control valves for leaks, Check the multiport valves for leaks. If the basket was ever out of the pump, some item may be bouncing around inside also.

Check to see that the pool pumps mounting is secure. Loose mounting could cause the motor to run loudly. It could be bearings rubbing or a bent shaft. If it is new, this should not have happened. If you check the mounting and feel that it is secure, I would return the pump to an authorized Waterway service agent and let them look to see if the bearings or shaft are damaged. I would do this quickly while you can still return the pump if its defective.

check housing for cracks or damage if good try tightening cap if still leaking replace gasket

SOUNDS LIKE YOU HAVE A SUCTION LEAK , CHANGE SHAFT SEAL AND WHEN YOU START PUMP RELIEVE AIR OFF OF FILTER. THIS HELPS PUMP PRIME FASTER