Cussing the prop shaft coupler
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=13634
Printed Date: May-18-2024 at 12:27am
Topic: Cussing the prop shaft coupler
Posted By: 1000dollabill
Subject: Cussing the prop shaft coupler
Date Posted: May-11-2009 at 6:12am
|
Well, tried the socket and threaded rod trick to no avail. also, tried moderate heat and a few whacks with a hammer while tightened down. I'm thinking tighten down on the socket as much as much as possible then work my way around the coupler with an air hammer. Is this a bad idea? Trans damage? This thing won't budge.
Thanks in advance. |
Replies:
Posted By: eric lavine
Date Posted: May-11-2009 at 9:51am
|
what are you trying to accomplish? new shaft?
new coupler? are you using 4 bolts? be more specific ------------- "the things you own will start to own you" |
Posted By: SNobsessed
Date Posted: May-11-2009 at 10:03am
|
$grand - I couldn't get mine to budge either & ended up just sawzalling the shaft in half, as I was buying a new shaft anyway.
Even with the coupler out of the boat, I could not separate it - used a sledge hammer on it - of course I then ruined the coupler with a misplaced blow. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |
Posted By: 1000dollabill
Date Posted: May-11-2009 at 7:01pm
|
i'm trying to replace the strut bearings, using 4 pieces of 3/8" threaded rod and a socket. I only have enough room to put a shallow socket in the middle, even after removing all of the packing from the stuffing box. the socket is centered and only pushing on the shaft. all four tightened evenly as the shaft still turn fairly easily. Once snugged up the nuts wont budge. I think the threads are giving out in the nuts before it budges. I really don't want to pull the strut as i understand it must be aligned. I think the air hammer is the last option. It popped once but only moved a 1/16" or less. I'm thinking the tension from the puller rig with the vibration from the air hammer may get her moving.
|
Posted By: CCrider89
Date Posted: May-11-2009 at 7:59pm
|
When you say moderate heat what did you use?
I would think a plumbers torch on the coupler while under tension might do the trick. ------------- CCrider89 Boating in the northern Adirondacks |
Posted By: WakeSlayer
Date Posted: May-11-2009 at 8:05pm
|
Can you put something under it to protect the bilge, and hit it with more heat?
The shaft will come out the other way, too, if the motor isn't in the way 
------------- Mike N 1968 Mustang |
Posted By: 1000dollabill
Date Posted: May-11-2009 at 8:17pm
That's exactly what i tried. as I understand it, the shaft will expand more rapidly than the coupler though. |
CCrider89 wrote:Posted By: BuffaloBFN
Date Posted: May-11-2009 at 9:22pm
|
Howdy neighbor and welcome aboard!
I don't think pulling the strut will help much. The 'easy' way for me is to pull the engine...the alignment doesn't worry me anymore.
Give me a call if you like. 770-536-2328 ------------- http://correctcraftfan.com/diaries/details.asp?ID=2331&sort=&pagenum=12&yrstart=1986&yrend=1990" rel="nofollow - 1988 BFN-sold "It's a Livin' Thing...What a Terrible Thing to Lose" ELO |
Posted By: 86BFN
Date Posted: May-11-2009 at 10:09pm
|
try hard bolts and new nuts? Pictures man Pictures!
If you screw it up, just get one of these! 
Double taper, comes with coupler and a plug to remove the flange next time! ------------- 👣 Steve http://www.correctcraftfan.com/diaries/details.asp?ID=4057&sort=&pagenum=1&yrstart=1986&yrend=1986" rel="nofollow - 86 Barefoot Nautique 89 Martinique Former Owner: 93 Hydrodyne 350 MAG |
Posted By: SNobsessed
Date Posted: May-12-2009 at 12:30am
|
Boat Dr. told me since the stainless shaft has a higher rate of thermal expansion than the steel coupler, heating it just makes it tighter. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |
Posted By: newoldboat
Date Posted: May-12-2009 at 12:46am
| I was able to get mine off easily with a three jaw puller but that is only an option with the engine removed. I tried to remove the original one on my buddy's boat and nothing worked, even heating it. We ended up cutting through it in line with the shaft with a die grinder. Try to cut all the way down to the shaft without cutting into it and then you can knock it off with a hammer. Exhaust all other options and then cut it off and buy a new one. Sorry I don't have an easier way. |
Posted By: 1000dollabill
Date Posted: May-12-2009 at 1:59am
|
well... with grade 8 hardware I got it moving. That is if you consider 3/8" over two hours moving! I hosed it all down with pb blaster and filled the pinch bolt holes with pb. I'm planning to let it soak overnight and go at it again in the morning. I did end up hitting it with my bosch bulldog set on hammer, seems like if I snug up all my bolts then add some vibration from the bulldog it moves. Maybe by this time tomorrow it'll be out!
Thanks guys. |
Posted By: 8122pbrainard
Date Posted: May-12-2009 at 10:12am
|
If you're using 3/8-16 rod and nuts, 3/8-24 will help. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: lancef
Date Posted: May-12-2009 at 9:41pm
| I tried everything also on mine..hours upon hours. I finally removed my strut and was able to get a 3 arm puller to fit in there. After soaking for days in PB, I would tighten the puller to the point of explosion, then hit the coupler with a hammer..everything would fall off but it would move quite a bit. Ended up taking less than an hour this way though...but that is not counting the little bit of time re-installing the strut. |
Posted By: lancef
Date Posted: May-12-2009 at 9:44pm
| Oh yea, one other thing..Dont know what boat you have, but if you do cut yours off and need another one, I still have my old one from an 84 Nautique. My shaft ended up being the problem so I got the dual tapered set as shone above. |
Posted By: 1000dollabill
Date Posted: May-13-2009 at 2:19am
|
Got it out and back in already. worked on it all day today. Without this site I wouldn't have known how to do it.
The boat is actually a 1989 Ski Centurion Falcon Open Bow. I also noticed my rudder port was loose so I removed and reinstalled it. I did however notice there is some rot in that area. I'm going to gamble that it will hold up till it can be repaired after the season. The boat lives in my garage except for the weekends and that area is reinforced. No money to fix it right now, and I'm no fiberglass guru. Thanks Guys. |
Posted By: WaxhawBoater
Date Posted: May-18-2009 at 3:55pm
|
I had the same problem with getting the prop shaft out of the coupler. I did the socket(s)between the transmission coupler and shaft coupler and going around each bolt screwing down on the coupler screws, 4 bolts, 1 turn at a time. 3 evenings,alot of cussing and a lot of determination, mine finally came off. I just changed out the cutlas bearing on the strut using my own $4 contraption I made. 5 hits with the hammer and it came right out. oooh, don't forget the set screws in the side of the strut that holds the cutlas bearings. Also, place the new bearings in your freezer for 1/2 hour prior to installing them and they slide right into the strut. ------------- WaxhawBoater Waxhaw, NC "1970 Skier" |