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Project Boats For Sale / Re: 19' bubble deck
« on: June 17, 2012, 11:49:27 AM »
more pics

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If your pulling pump for thrust bearing...replace all seals and gaskets. If your impeller is good leave it alone. The packing behind bearing is more than likely where your water is coming from. Those are to be snug not to tight. Over tighten will cause it to leak and then need to be replaced. How did it run without pump hooked up?
http://www.californiamarine.com/12jg.asp
The flexplate is your "flywheel" or "ring gear" bolted to the rear of the crankshaft that your starter uses to start it, and where your jet drive PTO is bolted to the center of. The dampner is the hub at the front of the crankshaft with a pulley boled on it to drive yer alternator.
Ray
http://www.americanturbine.com/information/understand_jetboat.htm
Just a couple of things to check before you get too carried away blaming a bad jet, or motor, for the "rattle" and start irreparably ripping stuff apart. Could be minor. Check all the bolts for your PTO shaft, adaptor (If it has) and flexplate. Seen those come loose more than once. Check your dampner, wouldn't be the first I've seen start to come apart either. Lastly, check the U-Joints in the driveline. Those are almost NEVER greased, and a lot do not have zerks in them anyway. Lastly, (firstly, really) double check a rock or something isn't stuck in the impeller.
Ray
