You can do rain an refill by taking out 2 banjo bolt on PS pump. That is how I did it. An other option is tha, take out the return side of the hose from PS fluid rev and put it onto a drain pan, Statrt the engine and trun the streeing to end to end (all the left to all the way right) at least 10 time, that will drain all the fluid into drain pan. Then take out one banjo bolt from PS pump whick ever is lower and put drain pan underneath. That will drain remaining fluid out.

Good luck

Akhil