HELP 96 Speedster- tubed 3 hrs, started to cavitate both motors, tied it to the dock, two days later, it started to sink.
Posted 28 July 2014 - 10:10 AM
Anyone know what could have happened? I am going out now to start disassembling the pumps now to inspect but any help would be appreciated.
Posted 28 July 2014 - 02:40 PM
YIKES, sounds horrible. Keep us posted.
Post pictures of the intake area on the bottom. Maybe the cavitation caused a gap by the shaft?
Posted 28 July 2014 - 03:09 PM
When I removed the rear ( I don't know what you call them) pump directors, to see the impellers I could see the wear rings were worn and the rubber like ring was completely gone on the port side and almost like a cracked egg on the starboard side. I have new ones coming on Thursday. I sat my impeller housings in my freezer and then tapped the old wear rings right out with ease. This is really turning out to be a easy job. Every thing came apart easy and looks like it should go right back together and I just will have to make sure everything is sealed up good as I go.
Posted 15 June 2015 - 12:55 PM
Sounds like the through-hull shaft seal. If something went wrong with these it would allow an air leak into the drive pump and would definitely cause cavitation and slipping. It would also cause a water leak when the boat is not running. Does your boat have two separate intake grates, one for each pump, or are both pumps drawing water through one intake grate. I'm trying to think why both shaft seals would give you problems beginning on the same day. Possibly age - dry rot of the rubber boot on the seal?
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