If the TX1510 is like a TX1500 there is a screen that is able to be cleaned so you won't have to replace it unless somehow it was damaged. I don't think I've ever had to change the o-rings, just reuse them if they look ok. I would recommend running a extendable magnet in the screen hole to pick up any free magnetic metal chunks. Normally they don't cause a problem but you might as well clean it up as good as you can while it's empty and apart.