Re: [VAL] vexing plumbing leak

[John Dorsey <jrdorsey@xxxxxxxxxxxxx>]

Chris,

Is yours a side bath? If so I just happen to have my shower pan out 
right now and on my '78 31ft there is a gap in the tank under the trap 
that goes all the way to the belly pan. I'd say it's about 8" by 12". I 
don't know if that's enough room to get up in there and make repairs, 
but there is access from the bottom on mine.

One other note though, If it only leaks when it's in use, it might be 
the seal where the pan connects to the pipe, that is a common leak 
point on residential tubs also. If you can tell if it's leaking right 
at the bottom of the pan, I would try unscrewing the drain up top, 
wrapping the threads with lots of teflon tape and running a bead of 
silicone around the flat part that presses against the pan and see if 
that fixes it.