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craigtone's avatar
craigtone
Explorer
May 28, 2013

1977 Holiday Rambler Vacationer Waste Tanks?

Hello, first time travel trailer owner here ... I owned a pop-up before without a blackwater system.

Anyway, we bought a 1975 Holiday Rambler Vacationer that was hooked-up to sewer and water at a permanent campsite. The previous owner said he re-wired and re-plumbed. Everything appeared to be working until our maiden voyage to relocate it to our property "Up North" where we intent to keep it parked.

1. The blade on the Thetford GL toilet stopped opening on Day 2.
2. On Day 3, we noticed water backing up into the shower. It appeared to be greywater only because there was no sewage smell.

I only saw one septic plug out of the bottom of the trailer with a gate valve on it, so I assumed all waste went to the same tank. This plug leaks and after the backup, I opened it and greywater came out. I was confused why it didn't stink and then pulled the gate valve ... then it STANK and dumped my blackwater out but luckily missed my foot!

Does anyone know anything about these old trailers and how the waste tanks & drains are configured? The plan is to leave it parked on our property permanently. I can fill the fresh water with a 12V transfer pump. I would like to let greywater drain onto the ground and then move blackwater to a tote and dump at the campground a few miles down the road via a rear 2" hitch cargo carrier.

After reading about the toilets, it appears parts are no longer available for the GL series, so I guess I am buying a new toilet as well.

If anyone has a manual for one of these, I'd be grateful as well!

1 Reply

  • You're going to get tired of hauling waste tank to the campground...you should come up with a permanent solution for the blackwater.

    You can build a septic system. It won't need to be as large as a home setup. With a macerator pump you can send the black water far enough away to keep the waste from affecting a water source.

    Same with the grey water.. I used a long sewer hose to get it far away from the RV. The hose connected to a 50 gallon drum that I buried with the bottom removed and sitting on a bed of gravel.