This is my 8th season with a 1 HP Sta-rite pump and motor. The bearings are starting to whine periodically (noise on occasion, but not often) so I figure they are on their way out and want to be proactive.

I'm assuming it's the motor and not the pump-- is this a good assumption?
Can I service the bearings in the motor, such as lubricate or replace them myself?
Is that a big job? Is it worth it? Or should I just replace motor?

If I have to replace the motor, do I just do that or do I buy a pump with the motor and replace the whole thing?

Pool stats-- 24K gal IG pool with 1.5" lines (I think, definitely not 2"), 200 lb sand filter, 1HP pump.

Thanks for the help?