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11-12-2018, 02:20 PM
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#1
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Member
Join Date: Dec 2014
Posts: 68
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Trans cooler leak
My trans cooler seems to leak coolant when the engine has cooled down. Frieghtline XC. Has anyone else had this issue? 
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Mark, Becky, and Samson
2023 Entegra Vision 29S
Semper Fi!
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11-12-2018, 02:30 PM
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#2
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Mar 2012
Posts: 871
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I had a trans cooler leak on my 2007 Newmar on a Spartan chassis. They told me it would just get worse and needed to be replaced. I then took it to another place for a second opinion. They also said it needed to be replaced. It was not cheap!
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Craig and Susan
Morgan Hill, CA 2007 Newmar Kountry Star 3910 towing a 1998 Ford Explorer. RVing since gas was 58 cents a gallon. Amateur Radio Operator (W6ADV) since 1962.
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11-12-2018, 07:26 PM
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#3
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Senior Member
Newmar Owners Club
Join Date: Aug 2015
Location: Manalapan NJ
Posts: 493
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Was at the factory service center end of Oct. changed out my trans cooler, they found it leaking, under warranty .
They also stopped a coolant leak, said it was loose clamps .
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2018 Newmar Ventana le 4002 .NKK 22567
2015 Unlimited Sahara hardtop/soft top.
Be good,be happy, tomorrow is promised to no man!
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11-12-2018, 10:15 PM
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#4
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,941
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Quote:
Originally Posted by samsonsdriver
My trans cooler seems to leak coolant when the engine has cooled down. Frieghtline XC. Has anyone else had this issue? Attachment 225787 |
Well Sir,
I'm the kind of guy that would drain the cooling system and, disconnect that cooler and see if I could tell where it's leaking. If at all possible, I'd weld/braze/TIG (whatever process is needed) that thing up. But, that's just me. If it's some form of an internal leak, well, that's BAD. You certainly don't want any mixing of the fluids. I have no idea what that component would cost but, according to the other responders here, IT'S NOT CHEAP. So, maybe with a bit of work, and, if you don't have the tools and equipment to repair it, provided it can be repaired, then maybe take it to a friend or see what a local weld shop might want to do the repair. Keep us informed of the outcome is.
Scott
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2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
 2018 Goldwing Tour DCT Airbag
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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11-13-2018, 07:31 AM
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#5
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Member
Join Date: Dec 2014
Posts: 68
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I used to a lot of my own work. This will be under warranty.
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Mark, Becky, and Samson
2023 Entegra Vision 29S
Semper Fi!
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11-14-2018, 04:19 PM
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#6
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Senior Member
Join Date: Mar 2017
Posts: 175
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I've found the same on mine. Try tightening the hose clamps.
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11-29-2018, 05:17 PM
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#7
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Senior Member
Join Date: Apr 2015
Location: Rogers, AR
Posts: 2,630
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When mine was new, first 6 mo., I had a leak on drivers side. Took the clamp off, loosened the hose and slipped it out about 1" and put clamp back on, all was good.
The nipple for the hose was welded to a flange out the end of the cooler and they had slipped the hose up on top of the welding bead an placed the clamp over the welding bead. Apparently the hose wouldn't seal over the roughness of the welding bead.
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2019 Fleetwood Discovery LXE 40M w/2021 Equinox
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12-03-2018, 03:52 PM
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#8
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Senior Member
Join Date: Feb 2015
Posts: 720
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This first thing i would do is check to see if that clamp in the picture is tight. I have had a few drips that were and easy fix.
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Frank, Columbus, Ohio
2001 Itasca Horizon Cat 3126B 330hp, 2018 Jeep GC Limited, EPS harness or 24' Enclosed Car Hauler
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02-07-2019, 04:46 AM
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#9
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Member
Join Date: Dec 2014
Posts: 68
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Freightliner replaced the hose and hose clamp under warranty. If it hadn't been under warranty I would have taken this advice under action. Thanks
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Mark, Becky, and Samson
2023 Entegra Vision 29S
Semper Fi!
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02-08-2019, 07:37 AM
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#10
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jul 2014
Posts: 142
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I just had the same thing when it got really cold outside and I just tightened the clamp all good now
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Nick and Sue
2017 Newmar Ventana 3709 All Electric
2012 Jeep Wrangler Sport
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