[KenS]

Has anyone change the sanitation lines on a 4300 Sovran? Are the lines attached to the hull or other structure in any way that would prevent me from simply pulling the line out while replacing it? If they are attached are there access points to the fasteners? I have a vacuum leak in the hose and hope I don't have to cut holes in the cabin to replace the hose.
Thanks

[Uhehner]

Has anyone change the sanitation lines on a 4300 Sovran? Are the lines attached to the hull or other structure in any way that would prevent me from simply pulling the line out while replacing it? If they are attached are there access points to the fasteners? I have a vacuum leak in the hose and hope I don't have to cut holes in the cabin to replace the hose.
Thanks

 
When changing hoses in general, I have connected the new hose to the old hose with a PVC hose fitting and used the old hose to pull and guide the new one through.  If it's a long tough pull you might glue the hoses together with some super glue and cut it to length after it reaches its destination. Just a suggestion.

Capt.  George

[KenS]

Thanks Captain George, that is what I was planning to do but if the hose is secured to a structure of the boat I may not be able to pull it through. I'm guessing it is a 30 ft run so there may be multiple fasten points. Ugh. Not looking forward to this project.

[jclark003]

I have changed all my sanitation lines except the waste removal line. If I remember correctly on my 43 open it had limited accessibility through access panels, one being inside of the hanging locker. Not sure about the 43 Sovran but would look behind cabinets and lockers for panels that can be unscrewed. Would also drop Tiara a note and see if they have a service bulletin available. Otherwise not an easy job.

Tiara uses pretty good hoses so I'm kind of surprised to hear of one leaking especially since your boat isn't that old. Maybe abrasion related? Assume you've verified it's not an obstructed vent or filter?

[KenS]

Thanks Captain jclark. I will check for access panels. I haven't ruled out anything yet. I replaced the duck bill valves and the toilet seal and ball seal and still have a vacuum leak. The waste line in the engine room from the bulkhead to the tank is cracking so I assume it might be that way inside the hull as well. I still have some investigating to do but i was wondering how difficult it would be to swap out the hose. If it is not to difficult I would consider doing it as a preventative measure.

[Sans Peur]

I am not familiar with your boat and how the lines are run but, on my 41 Open the pump and vacuum canister is only about 4' away from the head and accessed through a large hatch. If you have a vacuum leak it can only be from the head to the pump, not beyound that. The lines from the pump to the holding tank or overboard are on the pressure side of the pump.

[jclark003]

My mistake I thought you were referrring to a vac leak on the pumpout hose. Sans Peur is correct in that the hose between the pump/vac tank and the head is what needs to hold vaccum unless your are having the waste tank pumped out. Find the pump and work backwards to the head. They usually aren't too far apart. last time I changed them there were a couple of bulkhead clamps and that was it. Pulled the hose thru using a double ended hose barb as capt george suggested.

sometimes you can hear a vac leak if you can get close enough. The vacuflush /sealand manual has a set of troubleshooting tips that may help.

Either way you are probably on the right track to replace hoses. If some are cracked they are also most likely permeated and releasing odor.

Good luck

[reeltimebrad]

Took me almost two years to find a leak in my vacuflush system replacing too many parts on a hunch, ended up being two little orings on the flush pedal shaft that connects to the ball. If your not losing water in the bowl and have replaced the duck bills it could very well be what's happening.

[Uhehner]

Has anyone change the sanitation lines on a 4300 Sovran? Are the lines attached to the hull or other structure in any way that would prevent me from simply pulling the line out while replacing it? If they are attached are there access points to the fasteners? I have a vacuum leak in the hose and hope I don't have to cut holes in the cabin to replace the hose.
Thanks

Any time I have an odor problem I always look at the holding tank vent.  If the screen gets plugged the gas pressure can back up anywhere.  If there is a filter in the line it too could be blocked by over filling the tank. Change it out.

I  would look at the vent screen as they corrode shut and I would consider removing it as it is only required on fuel tanks. 

When you do a pump out do you hear a hissing sound in the vent area indicating a restriction.

Capt George

[KenS]

Thanks for all the replies and helpful tips. Unfortunately, the search for the leak continues. I may bring in a professional as I seem to be wasting a lot of money and energy replacing parts that don't need to be replaced.