What kind of maintenance ? Motors and pumps ? Hydraulics ? Electrical distribution and controls ? Material handling ? Combustion systems ? Engines ? Logistics ? Cody analysis ? Need specifics dude . This field goes on for years and no singular book can do it . <| sep |> It ' s one of the effects of everything in American culture being hypersexualized nowadays . It carries over into daily life too , where men can ' t even casually chat without being called out . I sometimes wonder if I ' m alone in having interests beyond my penis . Maybe I am . <| sep |> This . I basically spend one day to RD a card and another day to translate it into a video . <| sep |> Yep , it is Xhlx 43 rTs 2 Q <| sep |> My bad well my calculation still describes the general process . sorry OP