Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post

Montana_3368 · 03-18-2005, 02:47 PM

Finally found the right place for the wrong plumbing questions! We also were surprised to find out that our new 3670 was plumbed to the black tank! We found out the hard way by overflowing the tank back through the drain and the toilet on our first trip away from the dealer. We were not told of this unusual hookup at the time of the sale or walk through...After full timing three years in a 3575 plumbed as every other RV I know of, through the grey tank, we are disappointed to say the least with this situation.

I now see that you all are also talking about some being drained straight through to the outlet....Doesn't this look like Keystone does not quite understand the RV business as they try to justify these basic design flaws. Who ever heard of draining into anything but the grey tank?

We stay at so few places without full hookups, draining into a closed tank is not an issue with us. We always sit with the grey tanks open until the day before draining the black tank when we close all
drains and use the grey as rinse after draining the black..

03-18-2005, 02:47 PM	#9
Montana_3368 Established Member Join Date: Mar 2005 Location: Roscoe Posts: 32 M.O.C. #3368	Finally found the right place for the wrong plumbing questions! We also were surprised to find out that our new 3670 was plumbed to the black tank! We found out the hard way by overflowing the tank back through the drain and the toilet on our first trip away from the dealer. We were not told of this unusual hookup at the time of the sale or walk through...After full timing three years in a 3575 plumbed as every other RV I know of, through the grey tank, we are disappointed to say the least with this situation. I now see that you all are also talking about some being drained straight through to the outlet....Doesn't this look like Keystone does not quite understand the RV business as they try to justify these basic design flaws. Who ever heard of draining into anything but the grey tank? We stay at so few places without full hookups, draining into a closed tank is not an issue with us. We always sit with the grey tanks open until the day before draining the black tank when we close all drains and use the grey as rinse after draining the black..