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Old 07-11-2014, 09:58 AM
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psbudz psbudz is offline
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Locking nut on drive shaft fell off of V-drive

So my rider falls and I turn around to pick him up, pop into neutral for a second and then when I put it in forward, nothing, just the engine revving. Reverse, same thing. I look at the engine and see that the lock nut has fallen off the prop shaft on the v-drive. So I get it out of the water and notice the prop has fallen back and push it forward. So now the prop shaft is back out of it's hole and I can put the nut back on. Easy? Is that all there is to it? I will be getting another lock nut, as the old one isn't doing the job. Could not find any torque specs for it though; anyone know?
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  #2  
Old 07-12-2014, 02:09 AM
wake up wake up is offline
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Same exact thing happened to me last week. For now i just tightened nut up and works just fine. I need to rig a puller to loosen shaft back down and get a key in it. I see yours is spline.
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Old 07-13-2014, 12:22 PM
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towpilot towpilot is offline
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I put some loctite on mine it seems to work hasn't come loose anymore on my 205v
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Old 07-13-2014, 01:02 PM
uplander uplander is offline
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you got lucky, happened to me while moving forward. Marina used red loctite on mine.

Not a good feeling
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  #5  
Old 07-13-2014, 01:04 PM
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mikeg205 mikeg205 is offline
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Weird it would spin off... Something to add to your checklist


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  #6  
Old 07-13-2014, 01:32 PM
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clrussell clrussell is online now
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Heard of this happening to an 06 x star, almost rubbed through fuel tank before it fell off..

Definitely something to check
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  #7  
Old 07-29-2018, 08:09 PM
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mcnorthwest mcnorthwest is offline
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Quote:
Originally Posted by psbudz View Post
So my rider falls and I turn around to pick him up, pop into neutral for a second and then when I put it in forward, nothing, just the engine revving. Reverse, same thing. I look at the engine and see that the lock nut has fallen off the prop shaft on the v-drive. So I get it out of the water and notice the prop has fallen back and push it forward. So now the prop shaft is back out of it's hole and I can put the nut back on. Easy? Is that all there is to it? I will be getting another lock nut, as the old one isn't doing the job. Could not find any torque specs for it though; anyone know?
Did you ever find any torque specs for the nut? Just had the same thing happen on my 2009 PS214V.
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  #8  
Old 07-29-2018, 08:59 PM
88 PS190 88 PS190 is offline
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Haha well shaft nut torques... few things, due to difficulty holding the shaft securely to torque and the fact that friction is more what you measure with a torque wrench I'd say just as tight as you can get it with a standard wrench and use loctite.
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  #9  
Old 07-29-2018, 10:12 PM
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wetterthebetter wetterthebetter is offline
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I just installed a A.R.E. shaft a few weeks ago and skidim told me 35-40 lbs
A.R.E said 55 to 60 lbs , apply anti seize compound to keep the nut from Galling, no loctite
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  #10  
Old 07-30-2018, 11:19 AM
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prostar205 prostar205 is offline
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This has happened to me at least 5 times in my 2002 X-30. As the locknut works it way off, the splined shaft walks its way out the back of the boat. There really is no way of checking for this with a visual inspection. You need to go under the boat and see of the prop/shaft has any play bow to stern. Also, as the shaft walks its out the back of the boat when the nut loosens the shaft (SS) will ream the female splines on the trans coupler causing a ton of play between forward and reverse.

I finally gave up and bought a new shaft and coupler with the shaft having a castle nut and a hole drilled for it for a cotter pin - like the cotter pin the prop side. It's the only way to fit it correctly. MC figured this out later and now all newer boats (don't know when it started) come with pinned shafts on both the trans and prop sides.

$600 for a new shaft and coupler.
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