My friend said his water pump wasn't working so I tried getting the gearcase off tonight. I couldn't. The shift shaft did not want to come out and the drive shaft may still be connected. Why couldn't I get it off? I took all the bolts off and got it to drop 1" or so. What did I miss? It's a Johnson 60 hp triple. Mid 1990's.<br /><br />Will sand destroy a water pump? Seems like a little sand came out of the lower unit with the suction cup water supply...