Prop Removal Help!

[corizon]

Hello all! I'm trying to replace my prop on me 03 SSV Launch. I loosened the bolt used the puller and it doesn't pop off like the ones on the YouTube video. I followed the instructions on tap the back of the puller then tighten several times until loose. However it is very tight and still has not loosened. It has moved about a 1/4" or so. The locking pin seems to have moved with the prop and I am unsure if that is the reason why it's not coming off. I am worried that If I continue to force it off unknown if the pin is the problem, I may make it worse. I've tried to push the prop back in also with no luck. I'm at a stand still until I can get some help on what to do next. What is supposed to be a 10 min job now seems to be a disaster. It's not dirty or corroded. Unknown when it was replaced or if it's been replaced in the past. Any advise would be greatly appreciated.
http://uploads.tapatalk-cdn.com/20160229/4428c610db491ad345e14e04d3623d16.jpghttp://uploads.tapatalk-cdn.com/20160229/3f6925d56da3e89e3c6a46a69086a7a5.jpg


Corizòn

[SquamInboards]

I'd keep using the puller. It will come off. Having removed countless inboard props, many come off easily but some will give you a hard time.

One thing I would do is to put the nut back on the threads, just enough to allow the puller to grab the end of the shaft, and not so much that it's touching the prop - there should be enough clearance. The reason is, if the prop DOES pop off, it won't hit YOU when it does.

[corizon]

Thanks! Just needed the input from someone that's done it before. I just took it off to take a picture. I'll put it back on to pull. Thanks so much. Just changed the impeller now to the propeller.


Corizòn

[corizon]

Done! Thanks. When it goes it goes. Scared the sh!t out of me. Got the new prop on. Fluids is all I need left. You were great help. Thanks so much. Can't wait to hit the lake.


Corizòn

[Wylietunes]

next time, take a small drift punch and drive the key back up the shaft as it looked stuck in the groove of the prop. This crates a tight point at the end of the shaft.

[corizon]

next time, take a small drift punch and drive the key back up the shaft as it looked stuck in the groove of the prop. This crates a tight point at the end of the shaft.

Thanks!


Corizòn

[CJD]

Another trick for next time...

If you load the puller to the point you're getting worried, stop tightening(but leave it tightened) and then add just a little heat to the prop with a propane torch. Not more heat than is still comfortable to the touch. It will pop right off. Do not heat the shaft, just the prop to set up a temperature gradient.

[carlossa]

Another trick I use if you dont have access to a flame is boiling water on the prop. Sometimes its that little bit of expansion that helps break the taper grip.

[chris young]

Did you lap the new prop? I can hear the eyes rolling, but if you don't want a lost prop or broken shaft, I highly recommend it.

[corizon]

Did you lap the new prop? I can hear the eyes rolling, but if you don't want a lost prop or broken shaft, I highly recommend it.

Explain please. Thanks.


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[SquamInboards]

Explain please. Thanks.


Corizòn


http://www.pbase.com/mainecruising/fitting_a_prop

The details in that link are a bit excessive, but you get the idea. You want the surface of the shaft and the surface of the prop to have as much surface area contact as possible. In a pinch, I'll spin the prop on the shaft a bunch before putting in the key and nut for a final installation. Clearly not as good, but it might help.

[chris young]

Sorry for the slow reply, I've been away.

Very informative and this fellow obviously knows what he's doing. https://www.youtube.com/watch?v=2ozh4JjoWm4

Short version of the story, the keyway is only supposed to be a safety like a cotter pin, it is not intended to drive the prop. If you don't lap fit the prop there's a chance that it'll come loose and start banging on the key, and when that happens it can lead to a broken shaft. Nearly all the broken shafts you see are right at the keyway. The other thing that can happen is that if the key is too proud of the shaft, it can stop the prop from ever being properly seated on the taper whether it's been lapped or not and now the keyway is driving the prop. It does take some time to do this properly, but it's worth it. I learned the hard way, at some point my prop had come loose, the key fell out and it felt like the transmission was slipping. Eventually as my wife was passing the dock to drop me off at the end of my set, she pulled the throttle back and that was the last time that boat and prop were together. Happy ending, I now have an Acme 541 which I am very happy with. And when I put that on I went the extra mile and heated the prop in the oven before I put it on, I hope I never have to take it off LOL.

[corizon]

Sorry for the slow reply, I've been away.

Very informative and this fellow obviously knows what he's doing. https://www.youtube.com/watch?v=2ozh4JjoWm4

Short version of the story, the keyway is only supposed to be a safety like a cotter pin, it is not intended to drive the prop. If you don't lap fit the prop there's a chance that it'll come loose and start banging on the key, and when that happens it can lead to a broken shaft. Nearly all the broken shafts you see are right at the keyway. The other thing that can happen is that if the key is too proud of the shaft, it can stop the prop from ever being properly seated on the taper whether it's been lapped or not and now the keyway is driving the prop. It does take some time to do this properly, but it's worth it. I learned the hard way, at some point my prop had come loose, the key fell out and it felt like the transmission was slipping. Eventually as my wife was passing the dock to drop me off at the end of my set, she pulled the throttle back and that was the last time that boat and prop were together. Happy ending, I now have an Acme 541 which I am very happy with. And when I put that on I went the extra mile and heated the prop in the oven before I put it on, I hope I never have to take it off LOL.

Thanks!! Hope I have no issues with mine. Just got the boat out of the garage and getting her ready for the nice weather. Everything's been changed now to check over everything and make some plans to get on the lake. At least to test everything out. Lol.


Corizòn