Theboat is a 73 IMP w/ a GM350 4bbl/ 280 volvo penta outdrive w/ power tilt~trim. I have the book, though not very descriptive. Following the instructions I have removed the two bolts holding the helmit in above the unit and have that tilted up out of the way. With this outdrive, the hydrolic cylinders are surrounded by a metal box looking thing which has through it a a pivit pin which alows the OD to tilt up and down. In removing these, as the book calls for to remove the unit. It states that I should place a 5/16 bolt into the side and to attach a slide hammer and actually pull the pin out and there by freeing the OD for removal. I removed the retainng screw and was not able to even budge this pin either in or out & am using a heavy slide hammer. We are doing this as there is a noise coming from the back of the motor on the inside of the boat that kind of sounds like a flywheel or brake rubbing on a dust cover. Its not that loud but it also creates a vibration when at WOT, that sounded like a power steering pully bearing but we disconnected that and we've cranked the motor and dont notice any difference while turning the wheel. There is a difference at WOT though. It's a little louder when turned. There was a hole in the drive shaft bellow and was retaining some water. Not good for UJ or gimble bearing. any help or if it sounds like I am going in the wrong direction please advise.
