Challenge with replacing Sanitation Hose

[artboas]

So,, as noted on another post, I decided to strip out all my really smelly Sani hose.
I ran into a challenging problem, which sorta deserved a new thread.
I ran into this exact same issue when I re-hosed my 40.5 years ago
The problem is replacing the hose which connects to the deck pump out fitting.
The misery of this job, and I do mean “misery, with a capital M”, is that it’s impossible to get at the hose clamps that hold the clamps onto the hose barn on the deck pump out.
They are basically just under the fitting at deck level, And, the hole in the deck that the fitting and hose go through are just big enough for the 1 1/2” hose.
The hose clamp will NO WAY fit into the hole.
The first job is by hook or crook getting the existing clamps off.
2 tricks
Remove the 3 deck screws from rye pump out fitting, and work all the sealant loose. Get it so that the fitting is loose in the hole.
Now, you can cut the hose, about a foot away from the fitting.
This will give you the ability to twist the short length of Sani hose still attached to the clamps and fitting.
With a flashlight, and a spring mounted 8mm socket you can rotate to hose clamp around so that you can very laborious get at one hose clamp at a time, slowly loosening them enough to remove both of them.

so, you can now pull the short stub of hose through the hull. But how do you re-install???
The Hose clamp screw assemblies are too large for the holes.
on My 40.5, I actually cutprofiles into the deck for the clamp screw.

No more….I use a tool called Clamptite
It permits you to make extremely strong hose clamps out of simple stainless wire.
It is super low profile, and will fit right into the hole.
The tool has been on board for many years. It has many purposes; this being an excellent excample

 

[Rick486]

Suggest you just abandon the hose from the point you can gain access, then just fit a new piece the rest of the way. Or abandon the through hull in the deck, and a short piece of hose, then install a new thru deck fitting where you can get at it.

 

[Ralph Johnstone]

Not clear if you were able to re-clamp the hose with the Clamptite device ? If so, congrats. If not .............................. Had exactly the same problem with my deck pump out fitting but there was not enough room to insert a piece of paper on edge.

........... for this 1999 Hunter 310 owner. And maybe a few others as well.

 

[artboas]

Suggest you just abandon the hose from the point you can gain access, then just fit a new piece the rest of the way. Or abandon the through hull in the deck, and a short piece of hose, then install a new thru deck fitting where you can get at it.

Definitely not.
It now has a coupler in the hose, and you still have old hose in line.
If you sent your boat to a pro to do this job, you wouldn’t accept that solution. By taking on the job myself, I must keep the same standards.
Never splice Sani hoses. Nothing good will ever come from that

 

[artboas]

Not clear if you were able to re-clamp the hose with the Clamptite device ? If so, congrats. If not .............................. Had exactly the same problem with my deck pump out fitting but there was not enough room to insert a piece of paper on edge.

Yes,,, the clamptite worked perfectly.
You want to use a slightly thicker guage wire than what you’d use on a smaller hose.
It will hold at least as well as hose clamps.
Getting off the original clamps was doable with a lot of sweat, cursing, and more cursing.
But, there was no way to get them back on to a level of tightness I’d trust for Sani hose.
With the clamptite tool, the smaller the hose, the lighter guage of wire you want to use.
Like everything else of value in my life, I bought this at a boat show. It’s a great “oops tool” to have aboard, and the cost is very reasonable

 

[artboas]

Yes,,, the clamptite worked perfectly.
You want to use a slightly thicker guage wire than what you’d use on a smaller hose.
It will hold at least as well as hose clamps.
Getting off the original clamps was doable with a lot of sweat, cursing, and more cursing.
But, there was no way to get them back on to a level of tightness I’d trust for Sani hose.
With the clamptite tool, the smaller the hose, the lighter guage of wire you want to use.
Like everything else of value in my life, I bought this at a boat show. It’s a great “oops tool” to have aboard, and the cost is very reasonable

Once last point…
I’ve always believed in the adage, “make the job easier for the next guy”
I’m assuming that my 49 will need a Sani hose change sometime in the future, and that I likely won’t be the owner.
I feel good about the fact that they won’t have to struggle with under-deck hose clamps.
When they remove the deck fitting, the hose will magically come up through the hole. And to redo the job, he simply needs to spend $40 on a very useful tool.

 

[Ralph Johnstone]

By taking on the job myself, I must keep the same standards.

When doing the job myself, my standards are always to the highest level even though they will be multiple times what a pro would take to complete.

 

[artboas]

When doing the job myself, my standards are always to the highest level even though they will be multiple times what a pro would take to complete.

So true…..

 

[JoeWhite]

Was there enough room to cut the original hose clamp with a Dremal tool?

 

[artboas]

Was there enough room to cut the original hose clamp with a Dremal tool?

Unfortunately, no. Thought of that, for sure, as I have a flex shaft attachment
The hose clamps are literally only accessible by feel, as they are right at deck level, and obscured by cabinetry. Typical boat issues.
So, it really was a matter of getting the clamps loose enough to slide them down the hose.
One really valuable tool is flexible socket extensions, which are about 12” long.
The hose clamp nuts are 8mm, so it’s a small socket to fit into a confined space.
I knew that getting everything apart was somehow doable; it was putting things back that concerned me.
I really didn’t want to resort to my previous trick (cutting a small notch in the deck for the hose clamp nut), and that’s what led to the clamptite wire solution

 

[JoeWhite]

Here is a spring collar hose clamp that may be used. Available in autostores..

 

[artboas]

Here is a spring collar hose clamp that may be used. Available in autostores..
View attachment 211001

Respectfully this won’t work at all.
Spring steel… subject to rapid corrosion and rust.
And, it’s larger than the hole in the deck.
Nice try, but it just won’t work at all

 

[Ralph Johnstone]

I think all of you are being waaaaaaaaaaay too picky .

The location where the hose clamps SHOULD have been installed on my boat was in such a remote location that the factory (I was the first owner of the boat) did not install hose clamps and just pushed, yes pushed the hose on to the deck fitting barbed connector and hoped for the best. They were pushing from 12" back on the hose, like pushing on a rope.

Amazingly, it kind of held for 10 years. Mind you, it only took a gentle tug to pull the hose off the fitting. Maybe hose clamps are vastly over rated !

 

[Tally Ho]

Respectfully this won’t work at all.
Spring steel… subject to rapid corrosion and rust.
And, it’s larger than the hole in the deck.
Nice try, but it just won’t work at all

I think the idea with these is that you can loosen the. With a pair of pliers, from underneath. You don’t need to get a long screw driver or nut driver up into the small crack that the hose runs through.

I think that they make hose clamps out of material that may stand up better than spring steel…

Something like this…

https://www.amazon.com/WMYCONGCONG-Double-Assortment-Irrigation-Motorcycle/dp/B09CYCM2WH/ref=sr_1_33?crid=A74OSJV53BFF&keywords=Stainless+steel+Radiator+hose+spring+clamps&qid=1668903810&sprefix=stainless+steel+radiator+hose+spring+clamps%2Caps%2C85&sr=8-33

Greg

 

[artboas]

I think the idea with these is that you can loosen the. With a pair of pliers, from underneath. You don’t need to get a long screw driver or nut driver up into the small crack that the hose runs through.

I think that they make hose clamps out of material that may stand up better than spring steel…

Something like this…

https://www.amazon.com/WMYCONGCONG-Double-Assortment-Irrigation-Motorcycle/dp/B09CYCM2WH/ref=sr_1_33?crid=A74OSJV53BFF&keywords=Stainless+steel+Radiator+hose+spring+clamps&qid=1668903810&sprefix=stainless+steel+radiator+hose+spring+clamps%2Caps%2C85&sr=8-33

Greg

Respectfully,, here’s the issue.
The deck is drilled for the hose OD size. (Plus 1/4”)
There is no way of removing the screws that hold the outlet, and pulling it straight up, if there is anything larger than the hose.
The spring clamps that you are showing won’t fit through the hole.
My situation, like many others, is that the hose was attached to the deck before the interior was finalized.
So, while it was possible to get the clamps off, (as previously noted), there was no way to refit them without cutting a relief in the deck that the clamp nuts could pass down through
This also applies to any spring clamps, etc
This is why I went with the stainless wires & the clamptite tool.
Re: the previous owner who found that the hose was just jammed on with no clamps on the pump out fitting….
this is just an awful story. It’s so fortunate that the hose didn’t depart on its own volition, it’s almost impossible to get the stink out of a boat where a tank line has a massive leak.A buddy of mine has a 10 year old dufour that you can’t go below decks on a warm day. (If you get my drift)
So, my solution worked out fine, and it also respects “the next guy”, who will be changing these hoses a few years down the road.

 

[Tally Ho]

Respectfully,, here’s the issue.
The deck is drilled for the hose OD size. (Plus 1/4”)
There is no way of removing the screws that hold the outlet, and pulling it straight up, if there is anything larger than the hose.
The spring clamps that you are showing won’t fit through the hole.
My situation, like many others, is that the hose was attached to the deck before the interior was finalized.
So, while it was possible to get the clamps off, (as previously noted), there was no way to refit them without cutting a relief in the deck that the clamp nuts could pass down through
This also applies to any spring clamps, etc
This is why I went with the stainless wires & the clamptite tool.
Re: the previous owner who found that the hose was just jammed on with no clamps on the pump out fitting….
this is just an awful story. It’s so fortunate that the hose didn’t depart on its own volition, it’s almost impossible to get the stink out of a boat where a tank line has a massive leak.A buddy of mine has a 10 year old dufour that you can’t go below decks on a warm day. (If you get my drift)
So, my solution worked out fine, and it also respects “the next guy”, who will be changing these hoses a few years down the road.

Ah… I got it. The wire is whipped around the hose above the deck. And the wire can go back down through the hole in the deck.

That makes sense …

I still think I could get a spring clamp up inside the coming after the fitting is in place. But I have not had a reason to do that yet. I plan on replacing the water tank fill hose, so that will be my test.

Greg