taking out black & gray holding tanks

[new rver]

have a 05 gs endura.the floor over the holdng tanks is sagging.bought it used seen problem but didn't ask about it. now my problem.don't no if water from back wheels got up there or what.so reseald under neith and will stay on top of it.want to drop my holding tanks and take a look and put soom support under neith.it looks like my drains go in on top.? is do they go in a rubber seal or are they glued on do i have to cut them on top than redo any info would be great.
thanks bob linda & missy safe travels

[Dixieray53]

I'm not real handy, but can't you just pull the floor up from the top?

[new rver]

yes just thought it needs soom suport than wouldn't have to replace floor

[dsbike]

New RVER, Adding support may be a good idea, but if the floor is sagging you most likely have water damaged floors & the best way to fix this is to replace the floor. In the long run it is probably easier to replace the floor than to drop the tanks & add support. I would think that once you went to the trouble of dropping the tanks you would find that the floor needs replacing also. With the floor out you should be able to add the new support if needed without removing the tanks.

[new rver]

thanks for replys. have to take look at replacing floor
safe travels bob linda & missy

[Nutravlr]

Just a thought, and I imagine you are very sure where your floor is sagging or weak. I have gs 35ft endura. Floor sagged or weak when bought it used. More I looked, I found that sag was over the rear axle, that in this spot there is more space between the floor joists than any of other joists. So, Motorhomes of Texas for very nominal fee added a brace and all is fine. Realize this probably not your issue due to location, but mention so might help.

[new rver]

there is a brace over the axle were the main travel is.the sag is right after the brace behind the wheels to the other cross brace.right over the holding tanks.i've notice theres a sheet of tin then the wood.lazy daze looked at it and said it was rot.but the more i look at it and push on it it don't seem weak just a sag.thanks for all the info
safe travels bob,linda & missy