40.5 holding tank hose change

[Jim Vincent]

....a filthy job, but i'm damn pleased with the results! i replaced every hose in the boat with new white sanitation hose. if your interested, i can give you a few tips that will save you a lot of headache. for you 40.5ers, we've got a 38 gal. alum. tank, built by Ezell manufacturing. including clean-up,(there's crap everywhere)it took me approx. 2 1/2 days,...what??...oh yea!?....you think you can do it quicker...OK, reach way back and up behind the electrical with both hands, a screwdriver, 2 clamps, a vent line, a shower discharge line, a new rigid 1 1/2" hose in a space of about 8" and force it on a fitting that you need a mirror to see.(it's the only way to it, you can't go in from the top because the hole in the deck is the exact size of the hose, and with the clamp on, it won't fit in the hole!) e-mail me and i'll send you all the filthy photos you want. ....YOU WANT TO SEE SOMETHING SCARY, look at my recent post, "40.5 holding tank hose" in the Photo Forum. take care, Jim Vincent / Toucan

 

[Arthur Boas]

Calm down

I dis the same job, and am well aware of the hose clamp problem. Basically Hunter put a hose clamp on the fitting below deck, and there seemed to be no easy way to pull the fitting out with the short length of hose on. Basically, it turned out to be easy, insofar as I drilled a series of a dozen of small, (1/8) holes in the shape of the hose clamp screw profile, and bashed the small piece out with a hammer/ screwdriver. The fitting c/w hose came out cleanly. There was enough overlap on the fitting flange to easill cover the hole. New subject. While you are replacing your hoses, I suggest moving the vent. Anyone who is interested a little more in why, and some tips to do this can call me 416-487-0500 eve.

 

[Peggie Hall/Head Mistress]

Why do you recommend moving the vent, Arthur?

I can think of several reasons why factory installed vents should be moved, or at the very least enlarged. I'm curious to know why you think this one should be moved..and there's certainly no reason why you can't post your reasons here.

 

[Arthur Boas]

Ok, its my lunch hour anyway

basically, the vent on the 40.5 tank is vented off the side of the tank on the starboard side of it. The tank has a profile which follows the hull, insofar as it is approximarely 13 inches deep on the port, curving upwards along the hull line to 4 inches. The vent line goes straight up, and exits the starboard side of the hull. There is a loop of hose above the vent fitting height to prevent run back on a strong heel. The problem is that every time the boat tacks or heels to starboard, the larger volume of tank liquid, (being polite here), rapidly displaces the tank gas which is in the smaller tank volume, and you get an awful blast of tank air right at your deck amidships which then wafts back into the cockpit. There is no way to avoid this, as the vent hose is straight in line with the tank vent.So, what I did was place a vent up in the bow, install a Sealand filter right near it, and plum the whole thing with that really nice White rubber expenso hose.On the 40.5 there are some tricks to running the vent. First, you have to remove the entire fiberglass foward partition in the V berth. Next, you run the hose between the forward cabin starboard wall and the hull, exiting in the anchor locker. The vent is on the starboard side of the anchor locker about 2 feet from the aft wall of the anchor locker.This will work quite well.