When I just installed my new rack, I was able to get both lines on the rack itself from the bottom without dropping the cradle. As far as getting to the ones on the pump side I think I did the same thing. If not, I had to remove the pass. wheel and go in from that angle. Can't remember which on the pump side. Slide under it and see which would be easier.

And don't forget to stick some jack stands under the car as you do this.