Go Back   iRV2 Forums > MOTORHOME FORUMS > Class C Motorhome Discussions
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 06-30-2011, 08:36 AM   #1
Junior Member
Vintage RV Owners Club
Nor'easters Club
Join Date: Sep 2010
Location: Auburn, NY
Posts: 19
water pump from fresh water tank

Forgive me if I'm just confused, but I need help, just finished rebuilding my water system in my Class C and I can't seem to get my pump to pump from my fresh water tank? When I hook up hose from the house it builds pressure and stops pumping but when I disconnect the hose from the city connection, shouldn't it start pumping from the tank?

I have three hoses coming off the tank, one is the main fill hose, second is going to the pump and the third is breathing tube? Does it matter which is the breathing tube and the hose to the pump?

Can anyone shed some light?

ljedik 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 06-30-2011, 01:03 PM   #2
Senior Member
gklehner's Avatar
Join Date: Feb 2011
Location: Peoria, AZ
Posts: 205
Any chance on a diagram here? On the surface, based on pressure from the city supply, it sounds like a check valve in the wrong location or corresponding wrong location of a connection. Also, not sure of your tank outlet/inlet arrangement. Doesn't seem like it would be possible to have both a breather line and pump suction both off the tank bottom. I would recommend you make a diagram of all your lines, pump, tank, valves, then flow paths for each. That should show you where the problem is.
This probably doesn't help much, but if you post a diagram may be of more assistance.

Good luck -

Greg, Karen and the kids (choc. lab and golden retriever).

gklehner is offline   Reply With Quote
Old 06-30-2011, 08:12 PM   #3
Senior Member
Dave78Chief's Avatar
Join Date: Jun 2009
Posts: 1,504
You said:
[QUOTE]When I hook up hose from the house it builds pressure and stops pumping but ...QUOTE]

The pump is not used or needed when you are connected to a pressurized hose.

Below is a basic water system diagram


Dave78Chief is offline   Reply With Quote

tank, water

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
Fresh water tank won't drain namwob Monaco Owner's Forum 6 04-01-2011 03:20 PM
Fresh Water Tank eoddewey Newmar Owner's Forum 7 12-06-2010 09:01 PM
Water pump draws air at half full tank bottieri Gulf Stream Owner's Forum 9 08-25-2009 10:51 AM
TROUBLE W/USING FRESH WATER TANK OpaRon Newmar Owner's Forum 4 11-24-2008 04:20 PM
Drain the Fresh Water Tank 69RoadRunner Newmar Owner's Forum 11 11-02-2008 09:59 AM

» 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 07:15 AM.

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