Originally Posted by nu2argosy
Hi is there someone that can help me with a diagram of the septic system for this year and model trailer? When I open the lid on my rear bumper, I see one tank with a large train hole and two smaller plastic hoses coming out. I suspect that there is a tank missing.Also there is some corrosion on this tank.How easy are these to repair or replace and where can I find them.Thank you, Ray
I can't help with all of your questions, but what you are describing is likely "mostly" original. Prior to 1974, wash water tanks weren't offered on Airstreams. On my Overlander, the streetside drain services the kitchen sink while the curbside drain services the tub/shower and bathroom vanity sink. Both of these smaller drains enter the between the dump valve and termination cap on the rear of th coach.
Good luck with your investigation!