Solenoid is located on the bottom left side(sort-of), on front, tilted slightly down. Don't think you can see from the top side.
Small screen is on the end where it is screwed in. Chisel is required to start the thing unscrewing.
Would NOT mess with it unless you are having a problem, changing the PS pump , or changing the fluid. I cleaned the screen after the PS installation-- but have a lift.