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Thread: Stuck Prop
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05-15-2019, 11:52 AM #1
Stuck Prop
Any advice on removing a stuck prop? I removed the nut from the end of the prop shaft, near the prop. The prop was not on the shaft very tight. I can get the prop to slide on the shaft about an inch and a half. It appears the problem is the key is stuck to the prop. The prop will slide on the shaft, but when the key hits the threads of the prop shaft it stops. I have tried to push the key further up the shaft, but it will not budge. The prop and the key move together.
The prop is in perfect shape. I think someone installed it incorrectly (I bought the boat in the fall). 98 Mobius DD if it matters.She ain't pretty, but she can dance!
1998 Mobius
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05-15-2019, 01:12 PM #2Senior Member
- Join Date
- Sep 2005
- Location
- Claytor Lake, VA
- Posts
- 599
The prop is a taper fit to the shaft and shouldn't be lose. Sounds like your key has deformed since it was taking all the force and you will have to drive it out with a punch.
2005 Mobius LSV
325 EFI
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05-15-2019, 01:54 PM #3
If at first you don't succeed, get a bigger hammer! I was able to drive the key out using a 3/16 punch and my 3 lb mini sledge hammer. Kind of nerve wracking pounding on the key/propeller like that. I wound up wedging a 2 X 6 between the ground and the underside of the prop shaft, right against the webbing of the prop. Of course I was swinging the hammer right next to the rudder as well! All's well that ends well I guess.
She ain't pretty, but she can dance!
1998 Mobius
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05-17-2019, 05:37 PM #4
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05-18-2019, 09:34 AM #5Senior Member
- Join Date
- Aug 2011
- Posts
- 2,522
http://www.instgram.com/jlyons30
2002 Moomba Mobius LSV - Sold
2006 Moomba Mobius LSV - Sold
2017 Moomba Craz - Enzos, Lead
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05-21-2019, 10:37 AM #6
Got the coupling off. Had to break out the 3" angle grinder and metal cutoff wheel to cut the coupler off. No way that coupling was coming off with just a puller. Previous owner must've hit something, which explains the almost new prop. Lucky for him someone (factory maybe) installed a brass key on the coupling end. I have new brass keys for both ends now. Dealer told me I had to get a new shaft along with the new coupling. $340 for both, so I went ahead and ordered them. I hope they come in by this Friday so i can finish this up. Also ordered new strut bushings. Those came in yesterday.
She ain't pretty, but she can dance!
1998 Mobius
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05-21-2019, 10:52 AM #7Senior Member
- Join Date
- Aug 2011
- Posts
- 2,522
http://www.instgram.com/jlyons30
2002 Moomba Mobius LSV - Sold
2006 Moomba Mobius LSV - Sold
2017 Moomba Craz - Enzos, Lead
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05-21-2019, 12:35 PM #8
The bolt for my harmonic balancer puller is a 5/8-18 thread with a 15/16 head. I had a cheater bar on the wrench, so about 3' of leverage. Damn thing wouldn't budge and it was screwing up the threads on the bolt. I was also gonna try heating it up with some map gas, but decided just to cut it off.
She ain't pretty, but she can dance!
1998 Mobius
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05-21-2019, 07:33 PM #9Senior Member
- Join Date
- Aug 2011
- Posts
- 2,522
http://www.instgram.com/jlyons30
2002 Moomba Mobius LSV - Sold
2006 Moomba Mobius LSV - Sold
2017 Moomba Craz - Enzos, Lead