Lower unit removal-Need help w/Driveshaft

[Tradewinds]

I have a 70 HP, 1983 Evinrude, trying to remove the lower unit<br /><br />I have removed all 6 bolts and the F/R shift pin under the carbs. I can see light thru the foot & twist slightly side-to-side, but the driveshaft is stuck. Too big to turn upside-down and hit with liquid wrench, any suggestions/help?

 

[OBJ]

Re: Lower unit removal-Need help w/Driveshaft

Welcome Tradewinds!<br /><br />This problem comes along every so often. Have you tried putting a "pry" between the lower unit and midsection? Sometimes getting a little rough will help.....meaning....pry the crap outta it.<br /><br />One of two things is probably happening....the splines are gaulded or the splines on the drive shaft have worn and sorta locked in by the splines in the crankshaft.<br /><br />Gaulded splines are the worst....getting some kind of penetrating oil in there would be good....but as you said...difficult.<br /><br />If the splines are worn....get the lower unit in gear. Hold the prop shaft from turning and work the flywheel COUNTER clockwise while prying down on the lower unit. <br /><br />Most times....harsh language helps the most.

 

[Tradewinds]

Re: Lower unit removal-Need help w/Driveshaft

Thanks for the reply. In the manual, the foot comes off after 6 bolts and a pin.<br /><br />I've done a bit of prying, left a few battle-scars already. The force required to pry at this point is damaging the aluminum. My wife is now laughing at me as I beat the hell out of it with a rubber mallet.<br /><br />I am not familiar with a term you used..."gaulded". What does this mean? I do understand what you mean by holding the prop in gear and working the flywheel. This would basically twist the entire drivetrain, and connection points would move if possible, however slightly.<br /><br />This motor is ancient, used exclusively in salt. The lower unit has never been removed. I wash thoroughly after every use, but I would think the connection is just corroded. Is everything stainless in the driveline?<br /><br />Also, what about using heat? I think I can see the connection point between the crank and drive (just below the motor). I have a small propane torch that can be aimed right at the point. <br /><br />Any advice will be appreciated.<br /><br />John