Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
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 11-17-2012, 01:04 PM   #1
Senior Member
Freightliner Owners Club
Join Date: Oct 2012
Posts: 326
Alliance fuel/water separator

Alliance fuel/water separator - it was suggested on another of my posts to drain the fuel water separator prior to winter storage, I found the Alliance filter - how should I go about draining the water out? also how will I know the water is all drained out?

SMRDNR is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! 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 11-17-2012, 05:20 PM   #2
Senior Member
Pusherman's Avatar
Join Date: Oct 2006
Location: Rochester NY
Posts: 2,706
There should be a petcock valve on the bottom of the filter which should allow you to drain the water out of the system. Most have a clear bowl on the bottom which should allow you to see the water, if in the system.

Don't totally drain the filter, as you are probably draining out perfectly good fuel.

Also, be sure to drive the coach after draining before putting away for the winter. This way, everything should be primed and ready to go for spring.
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX
Pusherman is offline   Reply With Quote
Old 11-17-2012, 05:41 PM   #3
Senior Member
bdpreece's Avatar
Monaco Owners Club
Join Date: Mar 2000
Location: Yuma Arizona USA
Posts: 2,968
Crack the drain and drain off a couple of tablespoons of fluid into a clear plastic baggie. If there is any water you will see it as the diesel will float on the top of the water and the water will be visible in the bottom of the baggie. You really don't want to drain off very much fuel as you may induce air into the fuel system. Unless you see a lot of water this is all you should need to do. If water is present start the engine and let it run for a few minutes then repeat the above.
Brian, Loretta & Lucy (Golden Retriever)
2008 HR Endeavor 40 PDQ , ISL 400
2010 Dodge Ram 1500 Toad
bdpreece is offline   Reply With Quote
Old 11-17-2012, 07:31 PM   #4
Senior Member
Freightliner Owners Club
Join Date: Oct 2012
Posts: 326
SMRDNR is offline   Reply With Quote
Old 12-06-2012, 06:11 PM   #5
Stargazer66's Avatar
Gulf Streamers Club
Freightliner Owners Club
Join Date: Apr 2012
Location: Plano, TX
Posts: 31
You should probably drain off the water while the engine is running to avoid inducing air into the fuel delivery system.
Douglas P. Davis, CPA (Retired)
2002 Gulf Stream Friendship2003 Honda Gold Wing
Vietnam Veteran; 3/506th INF, 101st ABN
Stargazer66 is offline   Reply With Quote
Old 12-06-2012, 07:53 PM   #6
Senior Member
Tiffin Owners Club
Join Date: Jun 2008
Posts: 618
As Douglas said, it's easiest to do it while the engine is running. If it isn't and you drain too much, you could un-prime the fuel pump which could make it very hard to start the engine after. If you do lose the prime some models do have a hand fuel pump in the engine compartment that you turn to prime again.
michelb 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

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 12:33 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.