Reply To: QD 17 driveshaft

[Don]

Like Frank says, the crank is probably in similar condition.. Does this engine get a lot of use? If not, I would look for a decent used driveshaft, use the OMC moly lube liberally and replace the oring. I would probably pull the gearcase yearly to inspect the splines.
Before installing the new driveshaft in the gearcase, you may want to lube it with WD40 and ram it in and out of the crankshaft splines to clean out remaining rust. Then, I would lube the upper driveshaft splines liberally with moly lube and ram it in and out of the crank splines…Do this a few times to get at much grease into the crank splines as possible. Once the gearcase is reassembled, clean and lube the splines once again before gearcase installation…