this invention details a lubrication system for an automatic transmission , specifically the bearings of the planetary pinion gears . the planetary carriers have grooves formed in spider and flange sections thereof to carry the lubricating material from the inner diameter of the planetary carrier to the inner diameter of each pinion gear bearing mounted in the planetary carrier . the invention further includes two thrust washers that are assembled on opposing sides of each pinion gear that have axially and radially extending slots that further carry the oil between the inner diameter of the planetary carrier and the outer diameter of the planetary carrier . lastly , the invention discloses a method for lubricating the pinion gears of the planetary carrier .