Re: Torque specs for Mercruiser 165
what you are going for is a rolling torque setting. 70 to 80 ft. lbs is a starter for the nut <br /><br />1 lube up your bearings<br />2 put your drive shaft assemby together<br />3 hose clamp both bearing cups<br />4 tighten pinion nut to 70-80 ft. lbs. while you spin your bearings<br />5 now you are going to use a regular socket, tighten down the pinion nut a little more untill you start to get a little bearing load.<br />6 check rolling torque your goal is 6-10 in. lbs<br />7 keep tightening untill you get to 6-10 in. lbs.<br /><br />if you go past, you start over.<br /><br />if you are using used bearings, I would not go past 7 in.lbs. Any time you used bearings it is a no no, but if you do, always use the lesser torque setting (everything has already been worn out, you do not want to over-tighten anything that has been torqued before) I also run used rebuilds at idle speed (no load) for about 2 or 3 hours, then the same under load. If you can make it that far, you should be in good shape.
