Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 07, 2025 ...

This is a pretty good 3/4 days work to get the fuel lines replaces for to old fellows.

Mike

Does this diagram match the tank?

Project Du Jour:  getting head start for testing coils, replacing "O" rings, and plungers by 2nd year apprentice Zack. (anyone that can help me pull a fuel tank out of one of these coaches is more than a 1st year apprentice) This is the worse place I have ever seen a 6 pack mounted on a coach. It is hid next to the wet tank up behind the differential with no way to access it if broke down on the road unless you are thinner than the distance from the ground to the bottom of the axle housing.

Mike

Had some free time this A/M so I stripped this 6 pack down to it's underpants getting it ready to clean and freshen up.
1st pic is testing coils.
2. The 2nd pic you will see the 6 shinney seating surfaces. DON"T go polishing them up with emery cloth/sandpaper as this is where the "O" rings seat off.
3.  This is what all the parts look like all laid out ready for cleaning.
4. If you read of a little spring that will vanish here is what it looks like and you won't find a replacement at any hardware store.
5. This is how you keep it from escaping.

Mike

Nice, you have been hard at it. Do you see any signs of a failure so far? Why the rear drops down in travel mode only?

That indicates a problem with the rear ride height control valves, most likely. That's outside of the responsibility of the six pack. Nothing Mike doesn't already know though.

Hi Elliott.
Correct, we are starting with the six-packs since they are pretty aged and if that does not solve the issue, we will change out the RHCV's. Probably going to change them anyway just to be safe. My plan is to replace everything I can before I put this thing on the road to hopefully help my odds of not having a failure down the road. Also, having the use of Mike's pit is a tremendous help so I want get everything I can done underneath now while his pit is available. So, far things are progressing pretty good I'd say thanks to Mike's endless bank of knowledge.

Why the rear drops down in travel mode only?

I agree with your plan of preemptively replacing the rhcvs. Easy to do (even the front if you have access to a pit) and something that'll strand you while waiting on parts if they fail on the road. I'd have killed for access to a pit while doing all this on my U320.

As of this writing it seems like the blown out diaphragms on both the front and rear tank protection/isolation valves are leaking more air than the compressor can make up. With this big leak it seems like there isn't enough air to make up when the ride height calls for air as you travel down the road. With 2 ride height valve in the rear you have a tendency to use twice as much air as the front. We will check both ride height valves after we stop some of the air leaks and replace them if need be.

Mike

Is your fuel tank stamped anywhere with the gal. capacity?

Mark,

Funny you should ask as this is a shot from my front porch.  Not only do you see the recycle bin but that is a for sale sign too.