I am having an issue with my Polaris 280. I've checked all wheels, bearings, etc. I've recently replaced my booster pump as it went out.

Unfortunately when I run the sweep now the three wheels are no longer turning. The sweep goes to the pool bottom big its on its top end and isn't crawling along the pool.

I have taken the sweep apart and I see a small hairline crack in the frame of the 280. Am I getting an air /water leak and it's causing it to not move now. ?

It was moving and crawling before replacing the booster pump. I don't know why it's suddenly not moving??
Any ideas for me to try without having to replace the 280 frame ?