Closet flange removal black water tank leak

[Fishingrodburner]

I need to drop my black water tank to repair a leak near the top. I removed the toilet and the screws securing the flange to the floor, but I can't get the flange to budge. I tried using a hammer and chisel with no luck. From what I can see, there is very little pipe between the floor and the tank. It's basically fitting to fitting. I can't raise the tank enough to use a saw under the flange. The flange is a spigot to hub type (3633). Any advice on removing the flange or tank for that matter is greatly appreciated. 2014 Sprinter Copper Canyon 324fwbhs


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[WaltBennett]

It's probably glued to the PVC going to the tank and maybe even to the floor. You'll probably have to grind/cut off the top, maybe just around the edge, to release the pipe and tank. Use something like a Dremel or other rotary tool, or you could get aggressive and use an angle grinder. Just don't grind into the floor itself.

Hooking it all back up with a new flange & union may be a little trial and error to get everything to fit, but it should work out fine.

[rhagfo]

Does the drain pipe pass through the basement? I would cut the drain there in a piece long enough to place a coupling when putting back together.

[Fishingrodburner]

It's probably glued to the PVC going to the tank and maybe even to the floor. You'll probably have to grind/cut off the top, maybe just around the edge, to release the pipe and tank. Use something like a Dremel or other rotary tool, or you could get aggressive and use an angle grinder. Just don't grind into the floor itself.

Hooking it all back up with a new flange & union may be a little trial and error to get everything to fit, but it should work out fine.



Thanks for the idea. I cut it with a small grinder and thin zip disc then removed it in pieces. Took about 5 mins.


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[Fishingrodburner]

Does the drain pipe pass through the basement? I would cut the drain there in a piece long enough to place a coupling when putting back together.



I can't get to the pipe. I cut the flange with a grinder.


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