Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-20-2016, 08:05 AM   #1
Member
 
City: Buford ga
Country: usa
Join Date: Dec 2016
Posts: 6
shaft tube leak ...HELP!!

Hi Yall, new here, I work on yachts but have little experience in trawlers, I have a MT that has had a leak around the stuffing box flange where it mounts to the stringer., I need some help on how to go about repairing this leak. first is the plate on the stuffing box made to the shaft tube? and if so how do I get the plate off, some one has attempted to repair/seal it with resin from the inside but it didn't work, now I have to grind this resin off just to get to the plate, I have the shaft out and stuffing box hose off and can see where the shaft has rubbed on the lower edge of the hose flange , I can look down the tube and don't see any cracks or damage to the tube
,any help would be greatly appreciated!
__________________
Advertisement

gabilgerat is offline   Reply With Quote
Old 12-20-2016, 08:23 AM   #2
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 19,415
A picture would help...

But I am guessing that if a flat plate, lag bolted into a glass vertical, then yes there is a good chance after the lag bolts come out, that it has to unscrew from a bronze, stainless or fiberglass tube.

That tube is glassed through the bottom to where the cutless bearing carrier is lagged and screwed on to the hull just in front of the prop.
__________________

psneeld is offline   Reply With Quote
Old 12-20-2016, 08:33 AM   #3
Member
 
City: Buford ga
Country: usa
Join Date: Dec 2016
Posts: 6
Yes its a rectangle bronze plate but its not lag bolted, it has 4 ss studs made into the stringer.with nuts n washers , the cutlass bearing housing on the underside has 2 ss studs and nuts n washers too,
gabilgerat is offline   Reply With Quote
Old 12-20-2016, 08:36 AM   #4
Member
 
City: Buford ga
Country: usa
Join Date: Dec 2016
Posts: 6
Ill get some pics today, leak isn't bad but slow n stead, the owner is going to list it for sale I wants it repaired
gabilgerat is offline   Reply With Quote
Old 12-20-2016, 08:39 AM   #5
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 19,415
Quote:
Originally Posted by gabilgerat View Post
Yes its a rectangle bronze plate but its not lag bolted, it has 4 ss studs made into the stringer.with nuts n washers , the cutlass bearing housing on the underside has 2 ss studs and nuts n washers too,
Ok...but those studs could be just threaded on one end and lag screw on the other into the glass...either way, they have to come out before you can do much.

You can unbolt everything and see if you can pry the stuffing box flange off, but I will bet money you will have to get the studs out and twist it out.
psneeld is offline   Reply With Quote
Old 12-20-2016, 08:53 AM   #6
Member
 
City: Buford ga
Country: usa
Join Date: Dec 2016
Posts: 6
Quote:
Originally Posted by psneeld View Post
Ok...but those studs could be just threaded on one end and lag screw on the other into the glass...either way, they have to come out before you can do much.

You can unbolt everything and see if you can pry the stuffing box flange off, but I will bet money you will have to get the studs out and twist it out.
tried the pryin thing, no dice . and theres not enough room to turn the whole flange to unscrew it, its too close the bottom of the bilge. would have to unscrew the whole tube from cutlass bearing flange and try to get the tube out but if its glassed in I doubt that will be possible. already wish I hadent taken this job
gabilgerat is offline   Reply With Quote
Old 12-20-2016, 09:15 AM   #7
Guru
 
City: North Charleston, SC
Country: USA
Join Date: Sep 2010
Posts: 4,385
Quote:
Originally Posted by psneeld View Post
Ok...but those studs could be just threaded on one end and lag screw on the other .
That's a "hanger bolt". To remove it, put two nuts on the threaded end, jam them together so they won't move and back them out with a wrench.

If that's what they are.
rwidman is offline   Reply With Quote
Old 12-20-2016, 09:31 AM   #8
Guru
 
DHeckrotte's Avatar
 
City: Philadelphia, PA
Country: USA
Vessel Name: Revel
Vessel Model: 1984 Fu Hwa 39
Join Date: Nov 2015
Posts: 999
Been there, done that on a sailboat. Happily the bronze cast fitting was in two-pieces with throughbolts. It came out readily with only a little encouragement from blocks of wood and a small sledge, and a good thing, too; I took the fitting to a shop and had them press out and replace the cutless.
DHeckrotte is offline   Reply With Quote
Old 12-20-2016, 10:06 AM   #9
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 5,214
Slide a piece of prop shaft through the shaft line, then put a thick washer in the packing gland. Push shaft up til it butts up against the washer. Then beat on the end of the prop shaft that sticks out of the cutlass brg outside the boat. This should push the packing gland forward.
Ski in NC is offline   Reply With Quote
Old 12-20-2016, 03:21 PM   #10
Guru
 
City: North Charleston, SC
Country: USA
Join Date: Sep 2010
Posts: 4,385
I know I would be more than a little upset if I hired a "professional" to fix my boat and then found out he didn't know how to do the work and had to ask on a web forum.


To the OP: I think you have two choices here:


1. Admit to the boat owner that you can't handle the repair and suggest that he find someone else to do it.


2. Find a pro in your area who does know how to do the work and pay him to help you do it.
rwidman is offline   Reply With Quote
Old 12-20-2016, 03:49 PM   #11
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,436
Quote:
Originally Posted by WesK View Post
I know I would be more than a little upset if I hired a "professional" to fix my boat and then found out he didn't know how to do the work and had to ask on a web forum.


To the OP: I think you have two choices here:


1. Admit to the boat owner that you can't handle the repair and suggest that he find someone else to do it.


2. Find a pro in your area who does know how to do the work and pay him to help you do it.
I agree.

As they say, "a man needs to know his limitations ".
Capt.Bill11 is offline   Reply With Quote
Old 12-20-2016, 04:18 PM   #12
Guru
 
City: Hotel, CA
Country: Fried
Join Date: Sep 2011
Posts: 8,324
Reminds me of the laborer that worked for an electrical contractor for 6 months and picked up a side job re-wiring a neighbors house. Fire department 2 weeks after that said the cause of the fire was electrical. Nobody was home at the time fortunately.
__________________
Craig

It's easier to fool people than to convince them that they've been fooled - Mark Twain
CPseudonym is offline   Reply With Quote
Old 12-20-2016, 06:08 PM   #13
Member
 
City: Buford ga
Country: usa
Join Date: Dec 2016
Posts: 6
Believe it or not Ive been working on yachts for over 38 years, There is no one in the north Georgia area that knows any thing about trawlers. No One. I was hired because my knowledge of inboard boats in general and My exceptional reputation for giving good service at a reasonable price and backing my work ,now I admit I don't know every thing there is to know about Trawlers so I joined this forum to gain some insight on how the shaft tube is installed on a Marine Trader. there is no information on the web at all and as a fellow boater I thought id join up here and pick yalls brains.. ..
I have the shaft out and now know why it was leaking. the shaft was rubbing on the bottom of the flange for the packing tube and completely wore it out, now I have to figure out a way to replace it . any tips or suggestions would be appreciated
Attached Thumbnails
Click image for larger version

Name:	009.jpg
Views:	282
Size:	163.2 KB
ID:	59699   Click image for larger version

Name:	012.jpg
Views:	270
Size:	96.1 KB
ID:	59700  
gabilgerat is offline   Reply With Quote
Old 12-20-2016, 06:26 PM   #14
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,436
Bang it out from behind.

You need to prepare the boat owner for the fact that this looks like it is going to get expensive real quick.

Everything has to be realigned properly.

By the way, what's so different about trawlers compared to "yachts"?
Capt.Bill11 is offline   Reply With Quote
Old 12-20-2016, 06:29 PM   #15
Guru
 
City: Hotel, CA
Country: Fried
Join Date: Sep 2011
Posts: 8,324
shaft tube leak ...HELP!!

Apologies for the ASSumption on my part. Makes MUCH more sense to me now.

Totally agree with Bill above, warn them to limber up their wallet because this ain't gonna be cheap.
__________________
Craig

It's easier to fool people than to convince them that they've been fooled - Mark Twain
CPseudonym is offline   Reply With Quote
Old 12-20-2016, 06:35 PM   #16
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,436
Of course you could perhaps sleeve the tube and use a packing gland that uses a larger diameter hose. Or build up the old tube with Belzona and reshape it.

Then correct the alignment.
Capt.Bill11 is offline   Reply With Quote
Old 12-20-2016, 07:28 PM   #17
Senior Member
 
City: Marathon
Country: Usa
Vessel Name: silver gift
Vessel Model: 45 jefferson
Join Date: Nov 2013
Posts: 257
This is why I do my own repairs.! Sorry?
Deckape is offline   Reply With Quote
Old 12-20-2016, 07:53 PM   #18
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 19,415
It seems common to me for help at marinas to not have experience with certain pieces and parts of certain boats.

I have been with some of the best shipwrights from my area thar are constantly on their Bluetooth headsets being talked through maintenance items...and have swapped experiences with guys that are way beyond me and still had many questions about certain systems.

There are yacht yards that have probably seen and done it all, but the other 99 percent of marinas struggle with many of the basics that get bantered back and forth here regularly.

You can just take the studs out, cut the flange off and see if what is left of the tube will screw off. If not, cut that off too and see how much clearance you will need underneath to screw a new one on.

Dig that out, screw the new one on and rebuild underneath.

With a good cutting tool, could go pretty quick.
psneeld is offline   Reply With Quote
Old 12-20-2016, 08:14 PM   #19
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 5,214
What is aft of that gland? Some trawlers that portion of the keel is a free flood zone. Some have tubes of some material. Would like to know what is between the gland and the cutlass. If they are no way attached, which they should not be, beating it out with a piece of shaft would be the next step. Might use a heat gun to warm up any adhesive.
Ski in NC is offline   Reply With Quote
Old 12-21-2016, 01:03 AM   #20
Guru
 
78puget-trawler's Avatar
 
City: LaConner
Country: USA
Vessel Model: 34' CHB
Join Date: Apr 2016
Posts: 983
Cut those studs off if you cant wedge or lever the flange off of them inside the boat, if necessary cut behind the flange to cut the tube or whats left of it. The tube may be shot anyway. Its possible the stern bearing for the cutlass is screwed onto the tube on the outside. If so do as above and back out the hanger bolts and see if the stern bearing will either back out or be spun off. You might be able to worry the tube out the back way but likely its rusted solid inside or disintegrating. If it is its gotta come out which will require lots of glass work. Thing is, you got to get that inside flange off for replacement. One way or another so you can assess what else will be needed. Its the proverbial can of worms. BTW, a shipwright is a man who works with wood on a boat. Mechanics, machinists, glass men, electricians or fitters are not shipwrights. In a proper boatyard the work you are attempting to do is the work of an outside machinist. This is their bailiwick.
__________________

78puget-trawler is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 02:38 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012