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Topic: Antifreeze Leak in passenger Side Front (Read 787 times) previous topic - next topic

Antifreeze Leak in passenger Side Front

I am clueless on this.  I crawled under the motor home and I see we hoses but don't know what these particular hoses are doing or where they start.

These are pictures from underneath.  All are from between the entrance step and the generator.

Foretravel - leak - Google Photos

I see a few hoses that are wet but no obvious start of the leak.

I am assuming its anti freeze because it's green.  I don't see how it could be from the generator so my next assumption it is hosed used to run hot water around under the coach. 

Can anyone tell me what the bundle of hoses in the pictures is?
I have one picture from the front of the coach that shows two of those hoses in a T fitting.

Ideas?
1999 U320 3600
CAI floorplan
Build #5466
M11 - HD4060R
Name ?..  working on that

Re: Antifreeze Leak in passenger Side Front

Reply #1 –
Matt, 

A little hard to get prospective on the pictures, but looks like that may be below the heater core.

Turn on ignition (no need to start coach).

Turn on dash HVAC fan and select heat.

Coolant smell???
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Antifreeze Leak in passenger Side Front

Reply #2 –
Could possibly be from the Aquahot dash heater, isn't that typically green antifreeze?
And is the Aquahot separate from the engine heater for the dash?
Forest & Cindy Olivier
1987 log cabin
2011 Roadtrek C210P
no longer 1999 36' U320 build #5522
2013 Rzr 570 & 2018 Ranger XP1000
2006 Lexus GX470
2011 Tahoe LT 4x4
Previous 1998 45' 2 slide Newell, 1993 39' Newell

Re: Antifreeze Leak in passenger Side Front

Reply #3 –
Thanks for the suggestions.  I think you both may have a point that its not a hose leaking.  I tried just turning the key on and didn't get a strong smell of antifreeze but its not leaking much at this point either. 

This weekend I will open up the dash a bit to try and see what is going on.  I found a post showing where it is and it seems like a good place to start.
1999 U320 3600
CAI floorplan
Build #5466
M11 - HD4060R
Name ?..  working on that

Re: Antifreeze Leak in passenger Side Front

Reply #4 –
My aqua hot antifreeze is red and yes it I believe it is separate
The selected media item is not currently available.Keith & Jo
2003 U320T 4025 PBBS Designer series
Build 6203    Cummins 500hp
2000 U320 4010 WTFE / Build 5762 —Sold—
Motorcade #18070   
Pasadena, Texas
2015 Jeep Wrangler Sahara-Sunset Orange pearl coat
Don't argue with a fool, people watching might not be able to tell the difference.

Re: Antifreeze Leak in passenger Side Front

Reply #5 –
This picture is on the passenger side through the generator door.

Is this the loop that feeds the heater core?

picture of hoses
#2

Before I tear the dash apart to get the heater core out I want to test by just looping the heater core input so no more fluid gets there.

If the leak stops I will know where the issue is.
1999 U320 3600
CAI floorplan
Build #5466
M11 - HD4060R
Name ?..  working on that

Re: Antifreeze Leak in passenger Side Front

Reply #6 –
Those are heater hoses. You see the control valve to open and close the flow amount.
1999 U270 40 #5518
USN. USPS.

Re: Antifreeze Leak in passenger Side Front

Reply #7 –
Quote from: Texhub –
Those are heater hoses. You see the control valve to open and close the flow amount.
If i loop those two hoses will it hurt anything other than making the dash heat stop.
1999 U320 3600
CAI floorplan
Build #5466
M11 - HD4060R
Name ?..  working on that

Re: Antifreeze Leak in passenger Side Front

Reply #8 –
My opinion
By looping hoses to bypass heater core will cause no issue. In doing so. You still are allowing the flow of fluid to follow path. If it were summer. Then we could touch on loss of possible increased heat loss in an emergency situation when trying to get as much heat out of coolant to lower overheat condition.
Remember a radiator shop can rebuild heater core. Or recommend replacement core.
1999 U270 40 #5518
USN. USPS.

Re: Antifreeze Leak in passenger Side Front

Reply #9 –
Auto/truck salvage yards are good hunting grounds for heater cores. Newer year the better as older could have fluids sitting in one part of core doing damage.

Anyone with a core sitting around to take measurement off could save you tremendous time finding replacement if none repairable.
1999 U270 40 #5518
USN. USPS.

Re: Antifreeze Leak in passenger Side Front

Reply #10 –
You may want to put a tube inside each hose to form splice. Then pipe clamps to lock down. Use 4 clamps if you have. A pex splice fitting should work for splice. I think a shark bite wouldn't work because of thickness of hoses. But!?. 
1999 U270 40 #5518
USN. USPS.

Re: Antifreeze Leak in passenger Side Front

Reply #11 –
You can pick up a plastic barbed connector at any parts store. They are cheap. Pipe sometimes tends to leak..IMOP.
Safe Travels
Dave
2001 U320 40ft
Build #5867
2003 Tracker
VE7DOD

Re: Antifreeze Leak in passenger Side Front

Reply #12 –
Thanks guys
1999 U320 3600
CAI floorplan
Build #5466
M11 - HD4060R
Name ?..  working on that

Re: Antifreeze Leak in passenger Side Front

Reply #13 –
OK back to the drawing board.  The pictured hoses were AquaHot not dash heat.  Going back under her tonight to try and find the dash heater hoses.

1999 U320 3600
CAI floorplan
Build #5466
M11 - HD4060R
Name ?..  working on that