I need to replace the power take off (PTO) seal on my BJ70 that the propeller shaft of the winch connects into. There is a drain plug at the bottom of the PTO case but I'm not clear on wear the filler plug is located ...is it the plug on the rear side of the PTO where the case is protruded outward? If there is a separate drain plug for the PTO does this mean it is separate from the transfer case? This is not clear to me.