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Topic: Top of Black Water Tank Tank Connection (Read 464 times) previous topic - next topic

Top of Black Water Tank Tank Connection

In the next few days I'm going to be replacing my toilet.  I had initially thought that FT had used a Uniseal type connection but now that I'm looking at it, it looks like a glued on type of connector. 

So for anybody who has removed the tank or redone the top connections on it, what did you use to hook the toilet back up and how did you remove the original connector?
Robert
Build # 5304
1998 34' U270 Cummins 6CTA8.3

Re: Top of Black Water Tank Tank Connection

Reply #1 –
I just removed the toilet flange in our coach.There is some sort of putty holding it in.  i used a screw driver to turn the flange while lifting it and it finally broke loose.  i cleaned it up. installed the tile and will be putting it back in this weekend
1998 Foretravel U320c
4200 RCFE  unit # G5341

Re: Top of Black Water Tank Tank Connection

Reply #2 –
My issue is that I currently have the short toilet with a wooden base on it and I'm replacing it with a regular toilet with an integrated base.  The existing sewage pipe to the black water tank has to be removed and redone to allow the new toilet to work. 
Robert
Build # 5304
1998 34' U270 Cummins 6CTA8.3

Re: Top of Black Water Tank Tank Connection

Reply #3 –
Well I have had the black tank out of our 99' 36 U270, and there wasn't any sealant other than the rubber grommet and that is the way I put it back. On ours, the top part of the 3" waste pipe is also in the toilet pedestal and the toilet location is slightly forward of where the pipe enters the black tank, necessitating the pedestal to allow the waste pipe to angle towards the front of the coach. I didn't see any way, short of MAJOR renovation or maybe using macerator type toilet, to eliminate the pedestal. The tank layout will of course depend upon the length and floorpan of your coach, so yours may be different.
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Don & Tys
1999 U270 3602 WTFE #5402
Xtreme Stage 1 w/Headlight, Step Conversion, etc.
2009 Honda Fit Sport with Navi
Freedom is NOT "just another word for nothing left to lose"... with apologies to Kris Kristofferson

Re: Top of Black Water Tank Tank Connection

Reply #4 –
When removing and replacing the wax type toilet seal you might be very careful about dropping any of it into the black tank.  Particularly the electric drain valves it can cause them not seal completely.  Ah...don't ask my how I know this!



Jim Frerichs
2002 U320 42'

Re: Top of Black Water Tank Tank Connection

Reply #5 –
Essentially, my toilet sits almost right on top of the hole in the tank.  I think it is about 3-6" off center so they used a couple of back to back 45 degree elbows to get it to line up.  The 45s were installed above the floor though rather than below so that has to be reworked to be concealed below the floor to install a full toilet.  I don't think it will be a problem. 

I've removed the furnace ductwork and cut it into the bathroom cabinet so that I can remove it from the wooden base.
Robert
Build # 5304
1998 34' U270 Cummins 6CTA8.3

Re: Top of Black Water Tank Tank Connection

Reply #6 –

I don't have a direct answer but maybe this info will help (note that I have a '91, so yours could be different):
I have my tanks out now.  The pipes stay in-place and seem to be rigidly attached at or above the floor with lots of silicone filling around the hole.  To remove the tanks I had to first remove the sloped bases under each tank.  This then allows the tanks to drop down below the bottom of the drain pipes and slide out.  The rubber flange seals around each pipe stay with the tank - no sealant is used - only soap during installation (according to directions with new seal).  The 3" seal had to be coaxed into letting the tank drop.  I sprayed lots of silicone lubricant and used a small screwdriver to open up a gap to get lubricant into it.  Soapy water might work better.  It took quite a while to get it loose and the pipe seemed to extend into the tank further than it needed to but that might have a good side effect:  I always noticed when the tank got close to full, the toilet would burp when flushing - a good warning sign that dumping will be required soon.
Here's the new seal I bought: Amazon.com: Custom Roto-Molding 93 RV Tank Grommet: Automotive
The new seal looks identical to the old.  I could have reused the old seals but I thought I might as well replace them while they are out.

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John Fitzgerald
1991 U300 (SAI) Side Aisle Island Bed 40'
Detroit 6V92 with Allison Retarder
Meridian (Boise), Idaho

Re: Top of Black Water Tank Tank Connection

Reply #7 –
That's an awesome find, John.  I think that is the same grommet that is on mine but I had mistaken it for a glued in PVC connection due to the the way it has that lip on it.  That was exactly the info I was looking for.  Thanks.
Robert
Build # 5304
1998 34' U270 Cummins 6CTA8.3