Rack moves right & left when braking. Causing it to shimmy?

Hi,

The rack and pinion gear shouldn't move. If you want to confirm tightness, I attached the manufacturer's torque specifications below for mounting.

Now, my first thought is you have a worn tie rod. It could be an inner or outer tie rod. If you lift one front wheel off the ground, place your hands at 3 and 9 o'clock and wiggle. If there is movement, have a helper watch under the vehicle to see where the movement is coming from. If it is a tie rod, here is a link that explains in general how one is replaced. You can use this as a guide.

https://www.2carpros.com/articles/tie-rod-end-replacement

I hope this helps. Let me know if you have additional questions.

Take care,

Joe

See pic below.