Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-03-2022, 04:15 AM   #1
Senior Member
 
City: Vandiver, AL
Vessel Name: SV Stella Polaris MV Sea Turtle
Vessel Model: 1978 VanDine Gaff rigged schooner, 1978 Grand Banks Classic Trawler
Join Date: Sep 2020
Posts: 107
Exhaust elbow & hose replacement project

The replacement parts are in and Iíve begun the swap out. TWO QUESTIONS.
1. Do I lubricate the gasket and if so what do you suggest I use?
2. Iím having a heck of a time getting the last bolt off (see pics)I canít get either end of a wrench around it, nor can I access it from the top with that hose in place. I started taking it loose however it is a bit of a project and Iím afraid Iíll ruin it and then have to order another. There must be a tool Iím not thinking of to use? It was suggested that I Cut most of the exposed part of the threaded bolt off with a hacksaw which should give me enough room where the profile of the ranch will then fit through. Iíve looked for a properly sized ranch with a smaller profile that might fit through that gap and on, but have yet to find one.

Any advice is as always much appreciated.
Attached Thumbnails
DDD84635-2AD7-4CF5-8D07-D98F1015635A.jpg   37EB80F4-674D-4266-9686-1B0598CCCBFC.jpg  
Capt. Rodbone is offline   Reply With Quote
Old 12-03-2022, 04:26 AM   #2
STB
Guru
 
City: Clearwater
Vessel Name: Seas the Bay
Vessel Model: 1981 Hardin 42 Europa/Sedan
Join Date: Aug 2016
Posts: 1,805
When I did this job, I took the hose off of the cooler to give me access. I did have to drain it 1st, but it just took a few minutes to drain and remove and another few minutes to refill. And, it was a great opportunity to inspect the core tubes, which I hadn't done for a while. Mine were pretty clean? Any bits of debris could have been cleaned out at the same time. It'll probably take less time than trying to work around it.

In what way are you afraid of damaging the hose?

Also...gasket sealant isn't usually requires or helpful, but it isnt harmful. Whenever I've used it for exhaust, I've used red or copper high heat. But, any engine gasket sealant would actually be fine -- that exhaust usually doesnt get any hotter than the engine, and is often a little cooler. I did my elbows recently and didn't use any sealant at all.
STB is offline   Reply With Quote
Old 12-03-2022, 05:57 AM   #3
Guru
 
Cigatoo's Avatar
 
City: Narragansett Bay
Vessel Model: Grand Banks 36
Join Date: Sep 2016
Posts: 1,648
Get a box wrench and grind out part of the "box" to get it in there. I did mine that way. Its a bitch but doable. I remember it well. Lol
__________________
Carl
Cigatoo is offline   Reply With Quote
Old 12-03-2022, 06:07 AM   #4
Guru
 
Cigatoo's Avatar
 
City: Narragansett Bay
Vessel Model: Grand Banks 36
Join Date: Sep 2016
Posts: 1,648
When you re install the clamps on the boots for the heater exchanger be sure to re-tighten the small clamps first. Here is a video that will help with the heat exchanger. 4 minutes and 25 seconds in pertains to re tightening the clamps. Lots of other good videos .

__________________
Carl
Cigatoo is offline   Reply With Quote
Old 12-03-2022, 08:58 AM   #5
Senior Member
 
City: Vandiver, AL
Vessel Name: SV Stella Polaris MV Sea Turtle
Vessel Model: 1978 VanDine Gaff rigged schooner, 1978 Grand Banks Classic Trawler
Join Date: Sep 2020
Posts: 107
The videoís there will be a goldmine

I hadnít even thought to look there so thank you very much!
Capt. Rodbone is offline   Reply With Quote
Old 12-03-2022, 01:37 PM   #6
Guru
 
C lectric's Avatar
 
City: Gibsons, B.C., Canada
Vessel Name: Island Pride
Vessel Model: Palmer 32'
Join Date: Oct 2007
Posts: 4,103
There are "Flare Nut Wrenches" which likely can get in there.

THey are a heavy duty thick walled almost box end wrench with an opening in the 'box" that will go past the bolt and allow you to grip the nut to turn it. THey are far stronger than a Box end wrench ground out, are less likely to monkey the nut but they look similar.
C lectric is offline   Reply With Quote
Old 12-04-2022, 09:37 AM   #7
Senior Member
 
City: Vandiver, AL
Vessel Name: SV Stella Polaris MV Sea Turtle
Vessel Model: 1978 VanDine Gaff rigged schooner, 1978 Grand Banks Classic Trawler
Join Date: Sep 2020
Posts: 107
Thanks

I have a set of those at home just not on the boat. Your reply here reminds me I should bring those and swap them out for the regular ones because there may will be places I need them once we start our trip soon.

Iím not confident how ever the profile if thatís what you call it on the wrenches will be in any narrower than what I have so they just wonít fit through that gap. Iím going to give that a try but otherwise it looks like a disconnection of the hose that is above there and to the right. One other person suggested that doing so also allows me to inspect the heat exchanger and possibly even clean out the tubes at that point which should it be needed Iíll be glad I did it in this manner
Capt. Rodbone is offline   Reply With Quote
Old 12-04-2022, 09:56 AM   #8
Guru
 
Pete Meisinger's Avatar
 
City: Oconto, WI
Vessel Name: Best Alternative
Vessel Model: 36 Albin Aft Cabin
Join Date: Oct 2012
Posts: 2,564
Just take the hose off. Heat it with your heat gun and it should come off pretty easily. If you ruin it by removing it, it was due to be replaced anyway.

pete
Pete Meisinger is offline   Reply With Quote
Old 12-05-2022, 10:34 PM   #9
Senior Member
 
Greg QS's Avatar
 
City: Langhorne
Vessel Name: Quiet Storm
Vessel Model: Nordlund 61
Join Date: Sep 2022
Posts: 122
Judging by the previous post and condition of hoses and such. Remove the boot and clean the heat exchanger. Give the whole genset a good once over.
Greg QS is offline   Reply With Quote
Old 12-05-2022, 11:57 PM   #10
STB
Guru
 
City: Clearwater
Vessel Name: Seas the Bay
Vessel Model: 1981 Hardin 42 Europa/Sedan
Join Date: Aug 2016
Posts: 1,805
Quote:
Originally Posted by Pete Meisinger View Post
Just take the hose off. Heat it with your heat gun and it should come off pretty easily. If you ruin it by removing it, it was due to be replaced anyway.
To my eye, that's a relatively soft rubber boot vs a hard, reinforced hose. It should be flexible enough to come off easily. No heat should be needed. Really.

The inner clamp tightens around the copper bundle and that part of the boot supplies (or discharges) them with sea water. The outer clamp tightens around the exchanger housing and that part of the boot holds the core in the causing without the two metals directly touching, minimizing corrosion. The coolant that touches both the housing and the core is much less of an electrolyte than salt water, etc, so the isolation provided bybthe boot matters.

At any rate, it is a relatively soft rubber boot vs a hose.

I guess it could be problematic. Or I coukd be misreading the picture. But I don't think so.

I'd advise the OP to look at it, understand how it works, and then pull it apart without heat if at all possible. I don't think an unreinforced soft rubber boot would like heat much.
STB is offline   Reply With Quote
Old 12-06-2022, 12:17 AM   #11
Moderator Emeritus
 
Comodave's Avatar
 
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 17,971
I have a hook like tool for loosening hoses that works very well and doesnít seem to damage the hose. I was using it yesterday and it works great. Got it at Napa.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you arenít one, there is no explanation possible.
Comodave is offline   Reply With Quote
Old 12-06-2022, 01:35 AM   #12
DDW
Guru
 
City: San Francisco
Join Date: Apr 2018
Posts: 2,573
This sort of thing. Sometimes called a windshield tool, cotter pin tool, a few other names. Works better than anything else I've used for getting tight hoses loose.
Attached Thumbnails
61vsNqMrtyL._AC_SL1500_.jpg  
DDW is offline   Reply With Quote
Old 12-06-2022, 02:29 AM   #13
Moderator Emeritus
 
Comodave's Avatar
 
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 17,971
Mine is bigger and shaped like a J, but they both probably work about the same.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you arenít one, there is no explanation possible.
Comodave is offline   Reply With Quote
Old 12-06-2022, 03:57 AM   #14
Senior Member
 
City: Here and there
Join Date: Oct 2019
Posts: 496
That heat exchanger boot comes off easy enough without tools. Having watched the video I recollect I did use something to pry around the edge. He uses a flat bladed pry though. As far as the pointy tool, if you aren’t paying close enough attention as to where the pointy end is going, you’ll be buying a new boot. (Luckily I’ve only ever holed the end of a hose I could cut off.)

I’ve started collecting an assortment of spudgers for prying things I don’t want to ruin.
Porgy is online now   Reply With Quote
Old 12-08-2022, 09:02 AM   #15
Guru
 
IRENE's Avatar
 
City: Sequim, WA, USA
Vessel Name: Irene
Vessel Model: Nordhavn 40II
Join Date: Jan 2016
Posts: 1,192
We did not use any sealant on our elbow replacement. The new (stainless) elbow arrived with a new gasket/seal.

I recommend adding one of those boots to your spare parts kit. We have not had one fail but it is softer rubber as others have mentioned.
__________________
Jeff
MV IRENE
IRENE is online now   Reply With Quote
Old 12-10-2022, 03:04 PM   #16
Veteran Member
 
City: Greenville
Vessel Model: Chris-Craft '69 41' Roamer alum
Join Date: Apr 2021
Posts: 71
Quote:
Originally Posted by DDW View Post
This sort of thing. Sometimes called a windshield tool, cotter pin tool, a few other names. Works better than anything else I've used for getting tight hoses loose.
Me too......a good trick is to work the tool under the hose in one spot...which will open a small space.....then put a wd-40 straw against space and give a good shot....the tool will now move around hose easily as wd breaks the adhesion of rubber to metal....if you encounter more tough spots on your way around...just give it more wd shots
Crux is offline   Reply With Quote
Old 12-10-2022, 04:08 PM   #17
Moderator Emeritus
 
Comodave's Avatar
 
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 17,971
This is what I use. Overall it is about 9Ē. Works great.
Attached Thumbnails
FED0A83B-8B85-4187-A24E-BBB301CA1B39.jpg  
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you arenít one, there is no explanation possible.
Comodave is offline   Reply With Quote
Old 12-12-2022, 08:13 PM   #18
Senior Member
 
City: Vandiver, AL
Vessel Name: SV Stella Polaris MV Sea Turtle
Vessel Model: 1978 VanDine Gaff rigged schooner, 1978 Grand Banks Classic Trawler
Join Date: Sep 2020
Posts: 107
Final solution

To all of you kind responders I thought I would Bring this full circle and share what ended up being the solution.
With a hefty punch list ahead of our planned continuation of our cruise I decided to enlist the services of the shop at the marina where we are currently located. I was shocked to see how quickly the generator exhaust elbow and hose installation occurred and when I asked questions the person responsible said he had no issues but he used a 12 point box wrench. I wasnít aware what that meant until he explained but the set that I have on board is a six point. he said with a 12, it takes a while but he was able to move it just slightly each time until he had it removed.
Capt. Rodbone 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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 02:07 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012