I have read a lot of posts on this but I did not get the warm comfy feeling. I am replacing a wheel motor due to the bearing is really bad. And at the same time I am replacing a pump trunnion seal for the other side. Drives and pumps seem to be fine other than to much slop on the bearing on one drive and the pump seal leaking on the other side. So I will drain the fluid on the system and replace same. At the same time replace the filter So other than pre-fill the filter. Do I need to attempt to pre-fill the motor? Also then what is the proper way to bleed the system? Did I miss a step?