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11-17-2011, 08:18 AM
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#1
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Senior Member
Ford Super Duty Owner
Join Date: Oct 2010
Posts: 534
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Cummins Engine Coolant Hoses
Folks:
I discovered a very small drip of antifreeze on a bottom/rear hose of my 2003 Newmar Cummins 300 which my mechanic was able to tighten and seems to have fixed the problem. At that time, he suggested that I might consider buying water hoses and get ready to do some replacing.
Being that the hoses all look good from the outside, the coach is 8 years old, is it time?? If yes, he suggested working with Freightliner's 800 number to get all the hoses identified and ordered.
Any suggestions on this?
Thanks,
Dave
__________________
Dave and Anita
Two empty-nesters
2019 Sunseeker
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11-17-2011, 08:30 AM
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#2
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Senior Member
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,599
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Hi Dave1956,
Consider replacing the hoses the next time you change the coolant.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
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11-17-2011, 08:51 AM
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#3
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Senior Member
Join Date: Sep 2011
Posts: 982
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Might get the hoses from www.rvchassisparts.com as their prices are hard to beat and it is actually the Spartan Chassis parts dept selling parts for all engines and chassis.
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11-17-2011, 10:14 PM
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#4
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Senior Member
Freightliner Owners Club
Join Date: Apr 2002
Location: Pensacola
Posts: 2,728
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Dave- when I replaced the radiator hoses I used the access freightliner for part numbers and ordered by phone.
Found this article from gates recommending 4 year replacement.
http://www.gates.com/brochure.cfm?br...ocation_id=541
__________________
Hooligan, Pensacola, Fl -U.S. Coast Guard 1956-1985
2016 Thor Siesta Sprinter 24ST diesel -1972 Moto Guzzi
2008 Suzuki Grand Vitara TOAD
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11-17-2011, 10:20 PM
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#5
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Our DSDP's hoses are 9½ years old and still look and feel good. Will be replacing the coolant again next year so probably should do the hoses too. Not sure about the dash heater and water heater hoses though. They're in the frame rails and won't age as fast but still.........
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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11-17-2011, 11:16 PM
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#6
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Senior Member
Ford Super Duty Owner
Join Date: Jan 2011
Location: Kitts Hill, OH
Posts: 2,252
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If you hear someone offer you silicone hoses at what sounds like a high price,...Buy them and you will NEVER have to replace them again. THey will truey out last everything else.
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(RVM#26) THE U-RV 94 F-700/24 foot U-haul box home built RV
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11-24-2011, 09:20 AM
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#7
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,563
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8 years seems pretty young to have to replace hoses, but it depends on your aversion to risk and your budget. There are a lot of hoses if you want to repalce them all - hydraulic as well as water.
It sounds to me like you had a loose fitting rather than a bad hose, so I wouldn't replace just because you had a leak.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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11-24-2011, 07:59 PM
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#8
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Senior Member
Ford Super Duty Owner
Join Date: Oct 2010
Posts: 534
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I think you are right. I am in the middle of a 600 mile trip and no more drips!
__________________
Dave and Anita
Two empty-nesters
2019 Sunseeker
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11-25-2011, 08:16 AM
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#9
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Senior Member
Monaco Owners Club
Join Date: Sep 2010
Location: Golden, Colorado
Posts: 838
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Silicone Hoses
I did a search on Silicone Hoses and found this place online....
Flex Technologies Inc. they have most all hoses to fit any engine. You just need to know diameter and length of hoses. I will replace mine with these next year. They will never need replacing again...
www.SILICONEHOSE.com
Dave
.SILICONEHOSE.com www.SILICONEHOSE.com
__________________
2004 Monaco Signature with a Detroit 60, Vorad Radar, Samsung Fridge, Induction cook top, 2020 GMC Denali
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11-25-2011, 06:19 PM
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#10
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Senior Member
Ford Super Duty Owner
Join Date: Oct 2010
Posts: 534
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cool, thanks!
__________________
Dave and Anita
Two empty-nesters
2019 Sunseeker
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11-25-2011, 07:39 PM
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#11
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by Mekanic
If you hear someone offer you silicone hoses at what sounds like a high price,...Buy them and you will NEVER have to replace them again. THey will truey out last everything else.
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HOWEVER!!
DO NOT USE ANY COOLANT CONTAINING "sodium 2-ethyl hexonate ". Plus the coolant must meet ASTM D6210
This is an acid used in some coolants. It attacks and destroys silicone hoses and seals used in Cummins engines.
This was discussed on another forum with a Cummins coolant engineer. Cummins investigated it after engine failures and finding a gooey deposit in the engines after the seals failed.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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