Patching a 1996 Grey Tank?

[easyride]

Don`t you just love the way some of this stuff is designed,it seems to be designed for profit,and not repair.Dave

[sander17]

Well, we have taken two camping trips since the repair.
On the first, we completely filled the grey tank over 5 days. At the end, it
started to drip soapy water, so either there is another leak I missed, or the Vulkem coated patch is leaking. Nothing happened until the tank was full.

Time to punt. I went to the local RV dealer and picked up a 30 gallon portable waste tank. One more thing to carry in the truck. It has the advantage that we will no longer be limited by the grey tank when staying for many days. Most of the campgrounds (state/federal) we stay in have electricity, but no sewer or water connection at the site. I can always carry 7 gallons of fresh water from the nearby spigot to refill the fresh tank, but hitching up to dump the grey is a lot of work. The "blue boy" style tank can just be hooked up to the hitch on the truck for an aromatic trip to the dump station.

[Inland RV Center, In]

Originally Posted by sander17

Well, we have taken two camping trips since the repair.
On the first, we completely filled the grey tank over 5 days. At the end, it
started to drip soapy water, so either there is another leak I missed, or the Vulkem coated patch is leaking. Nothing happened until the tank was full.

Time to punt. I went to the local RV dealer and picked up a 30 gallon portable waste tank. One more thing to carry in the truck. It has the advantage that we will no longer be limited by the grey tank when staying for many days. Most of the campgrounds (state/federal) we stay in have electricity, but no sewer or water connection at the site. I can always carry 7 gallons of fresh water from the nearby spigot to refill the fresh tank, but hitching up to dump the grey is a lot of work. The "blue boy" style tank can just be hooked up to the hitch on the truck for an aromatic trip to the dump station.

Vulkem will not permenently adhere to the plastic tank..

You can try "hot plastic welding".

Andy

[purman]

Call some welding shops. Some of them will do a hot weld on plastic tanks. Thats how I got the fittings in my new fresh tank...

Or suck it up and by a new one..... Saves time and money in the long run...

I was going to reuse my old fresh tank as a grey tank... In the end I decided a 40 year old plastic tank was not a good idea and the holes were not where i wanted them. So I payed the $200 + for a nice new one...

[ts8501]

Originally Posted by sander17

Well, we have taken two camping trips since the repair.
On the first, we completely filled the grey tank over 5 days. At the end, it
started to drip soapy water, so either there is another leak I missed, or the Vulkem coated patch is leaking. Nothing happened until the tank was full.

Time to punt. I went to the local RV dealer and picked up a 30 gallon portable waste tank. One more thing to carry in the truck. It has the advantage that we will no longer be limited by the grey tank when staying for many days. Most of the campgrounds (state/federal) we stay in have electricity, but no sewer or water connection at the site. I can always carry 7 gallons of fresh water from the nearby spigot to refill the fresh tank, but hitching up to dump the grey is a lot of work. The "blue boy" style tank can just be hooked up to the hitch on the truck for an aromatic trip to the dump station.

I stand behind the answer in post #5. 4 years later, and absolutely no sign of any leak in the black tank. Actually the fix is probably stronger than the actual tank itself. No welding required.