Gearbox is pre-lubricated for mounting position #1 but other mounting positions may require additional oil. The load ratings are based on Boston Gear UH16460 lubrication filled to the proper level. The maintenance/installation manual can be found in the literature section at www.bostongear.com. and will be included with each gearbox. Cad models 2D and 3D can be downloaded from BostSpec2 at www.bostongear.com. Please see the Boston Gear enclosed gearing catalog P-1485 for alternate shafting and mounting configurations.