Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > Vintage RV's
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 03-29-2016, 10:13 PM   #1
Junior Member
Join Date: Feb 2016
Posts: 5
90 Chieftain. Water fill issue

I have a 1990 Winnebago Chieftain. Bought it about two months ago. She's just about all ready to go, so I figured I would try my hand at filling up and testing the plumbing system.
Well, it seems this model/year (and Itasca) have somewhat of a unique water fill system. There is only one inlet with a transfer valve from water tank fill or city water.
I attached a hose, transferred the valve to water fill & let her rip. The hot water tank filled and faucets had water with good pressure. That's as far as it went. Lost pressure in faucets and it didn't matter what side the valve was on, no water was flowing into the tank or coming from faucets.
There is also a drain valve next to the inlet that is completely missing.
Also, on the top side of the water tank there is a threaded elbow with nothing connected. I can't tell if it is related or if that is the overflow that is disconnected. I can only find one site with plumbing diagrams and the link that I need is coming up blank.
Any help is greatly appreciated. Thank you.

I'm going to try and upload a short video of the compartment in question.
Attached Files

CitySlicker is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-30-2016, 10:26 AM   #2
Senior Member
BFlinn181's Avatar

Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 12,633
I'm surprised a plumbing diagram for a Winnebago isn't available, but I'm not sure it would help you because that looks like a DIY modification to me. Having a single city water fill point and a selector valve to choose tank fill or city water isn't uncommon. The only time it can cause an issue is if the valve isn't closed completely and you overfill the water tank, perhaps causing structural damage as it expands. (The overfill usually gets overwhelmed by the fill pressure.

You could restore the system to the original, or add a separate tank fill attachment either in the wet bay or on the RV side. There are many styles and types of fill attachments available. My RV has a plastic locking door that allows city water connection or tank fill in a separate access hole to the tank. No valve to set or fail, it just works.

The missing drain could be what the 'T' fitting with the cap on the end modification replaces. Not sure about the copper tube with the flare end, can't see where it's coming from.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is offline   Reply With Quote
Old 03-31-2016, 09:08 AM   #3
Junior Member
Join Date: Feb 2016
Posts: 5
Thank you for your insight.
I think I'm going to try connecting the free standing flared pipe to the cap on the T.
I believe they might be related.
I think the missing drain is a separate issue in itself.
CitySlicker is offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to add water to water tank without using city water fill Laker44 Winnebago Industries Owner's Forum 22 11-18-2014 08:54 AM
89 Chieftain generator/power issue. bayzzit Winnebago Industries Owner's Forum 9 07-06-2013 04:09 PM
Question for Pro-Fill/Qwik-Fill users buck454 Class A Motorhome Discussions 7 05-30-2013 05:28 PM
Generator Exhaust Problem & Gravity Fill Fresh water tank issue for Winnibego Aspect kathyoxner Winnebago Industries Owner's Forum 11 07-29-2011 02:29 PM
Southwind 36D Issue after issue after issue.... fixn2gocamp Fleetwood Products Owner's Forum 4 10-21-2009 07:05 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:31 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.