How hard is it to change the strut
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=22909
Printed Date: November-19-2024 at 8:18pm
Topic: How hard is it to change the strut
Posted By: natedog
Subject: How hard is it to change the strut
Date Posted: August-01-2011 at 8:32pm
I have had a vibration under acceleration and just had the prop rebuilt and i have diagnosed the strut is bent to the right pretty badly.
I am about to order one from white lake marine, just wondering how hard it would be for me to change it myself.
is it as easy as pulling the prop off, removing strut, put new strut on, seal it and align it then put prop on?
i have searched but found alot on replacing the strut bearing but not on changing the whole strut.
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Replies:
Posted By: 8122pbrainard
Date Posted: August-01-2011 at 8:58pm
Nate,
Have you taken a look at the http://www.correctcraftfan.com/forum/forum_posts.asp?TID=21279&title=shaft-strut-alignment-video - alignment video ? it may give you some pointers.
BTW, struts can be straightened. Most prop shops can do it for you and you could save a few bucks!! Some here have even done it themselves. Chris (SN obsessed) comes to mind.
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64 X55 Dunphy
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Posted By: natedog
Date Posted: August-01-2011 at 9:20pm
just watched the alignment video right now, some of it seems a little vague, but i probably need to watch it again, i have a v drive so it will be harder,
yea i called a shop in austin to see if he had bend the strut back but was not successful, i think nettle props in austin should be able to do it,
i will try to take a picture it looks pretty bad though,
if i did it myself i was thinking of heating it up and pounding on it.
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Posted By: 8122pbrainard
Date Posted: August-01-2011 at 9:36pm
Nate,
The tech session ran a little over 20 minutes but Kieth had to chop the video down to 15 minutes to get it on youtube so there may be a few gray areas. Just ask if any clarification is needed. There is no difference between a DD or a VD. All the alignment principles apply to both.
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64 X55 Dunphy
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Posted By: natedog
Date Posted: August-01-2011 at 10:10pm
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Posted By: 8122pbrainard
Date Posted: August-01-2011 at 11:25pm
Nate,
How about lightening up your pictures. I can't see the strut!! Resizing them to the sites screen size helps too. It then doesn't require scrolling from side to side trying to look for something.
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Posted By: Gary S
Date Posted: August-02-2011 at 12:17am
Now you have the zoom too high, Take it back to 50% and you can see that last picture pretty well. He's got it bent pretty good,I'd just send it in
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Posted By: SNobsessed
Date Posted: August-02-2011 at 12:44am
I think that strut could be salvaged. It takes a press or a fixture with bottle jacks. Don't just pound on it with a hammer, that wouldn't work.
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Posted By: natedog
Date Posted: August-02-2011 at 12:59am
sorry i thought i resized them small enough,
SNobsessed, what kind of shop would have the sort of press you recommend or bottle jacks, because my first thought was to heat it up really hot and hit it with a wooden mallet
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Posted By: Gary S
Date Posted: August-02-2011 at 2:38am
Get it to a good prop shop,they are used to working with that material.
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Posted By: natedog
Date Posted: August-02-2011 at 3:53am
is it worth trying to press it straight instead of buying a new one? just want to make sure its is cause i dont wana tear up the tranny if it doesn't get back to perfect straightness
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Posted By: 8122pbrainard
Date Posted: August-02-2011 at 8:44am
Nate,
Here on this computer at work, I can make out the strut Yup, it's bent!!
I do feel it's worth getting it straightened and yes, try a prop show. If that doesn't work, call around to metal fab and machine shops. They will need an arbor press and of course metal bending skills!
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Posted By: TX Foilhead
Date Posted: August-02-2011 at 10:58am
Send it up to Nettles in Austin, if they can't do it at least they would be able to get you another one. It would save you from haveing to go to two places. You want to check the drive shaft out as well, it would really suck to have to take everything apart twice.
Nettles seems to have prices equal to the lowest I could find for my prop, the only thing is since your in TX you get to pay sales tax. They're easy to get to off of 35 if you wanted to save the shipping.
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Posted By: 8122pbrainard
Date Posted: August-02-2011 at 11:04am
TX Foilhead wrote:
You want to check the drive shaft out as well, it would really suck to have to take everything apart twice. |
Absolutely!! The VD's are a PITA to work on anyway!!
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Posted By: kapla
Date Posted: August-02-2011 at 3:56pm
most like the shaft is bent...
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Posted By: natedog
Date Posted: August-02-2011 at 6:14pm
got the strut off, now before i take the shaft off can i check it for staightness with a dial indicator or should i just take it with me to the prop shop
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Posted By: TX Foilhead
Date Posted: August-02-2011 at 6:37pm
Probably should have checked it first, but I'm not positive since the strut is bent. Now you'll have to take it off to check it.
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Posted By: 8122pbrainard
Date Posted: August-02-2011 at 7:11pm
Yes, You should have dial indicated with the strut on by clamping the indicator off to the strut. That is in the video. It's not too late you get the strut back on the hull and tightened down with a couple bolts. You want to check forward and aft (on the prop taper). You should not see anything over .003".
If you have already removed the shaft, a prop shop may not be equipped to do it. Typically a machine shop will have a set of V blocks and a granite surface plate. That really is the best way.
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64 X55 Dunphy
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Posted By: TX Foilhead
Date Posted: August-02-2011 at 7:29pm
Might be worth a call, depending on where your at, but I'm 95% sure that Nettles can straighten shafts which would mean they have something to measure them with if its out and your taking it there This of course depends on where your taking it and how far along in the disassembly you are. Hopefully your taking a break from the heat (105 here) and can do what Pete is suggesting.
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Posted By: natedog
Date Posted: August-02-2011 at 7:55pm
i cant find a dial indicator here in new braunfels but there is a habor tools in austin but i just got back from a cnc machine shop and he can check the shaft there
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