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08-07-2010, 04:47 PM
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#1
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,115
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Need Radiator
Well.......I thought I would escape the dreaded radiator curse...but mine started leaking in the upper corner. It may have been leaking for a long time because it only leaks a few drops each time I drive it. Not enough to drip more than 3"-4" down the side of the tank ove the last few months.
I spotted it while on our current trip to the Oregon coast. As long as I was in Oregon, I called Source Engineering to check on an aluminum replacement. They told me they didn't make an aluminum radiator for my model and they would have to make a custom one out of copper and brass. They use J&B radiator in Sacramento for their radiators and J&B doesn't sell to the public. They wanted close to $3500.00 with 30% off for an aluminum one. I was afraid to ask how much for a custom one.
I called Northwest RV Supply and they have some in stock, but not my particular model number. I'm thinking these things can't be that much different from one Monaco to another Monaco. When I get home I'm going to get some exact measurements and see if what they have is similar. I could work around hose placement.
Looking for suggestions on what others might have done. I figure I'll probably have to have a copper/brass one made. There should be some truck shops around the Los Angles area that is capable of of making one. The funny thing is......it's not that big of a radiator.....about 36" x 18" x 4" thick.
Anyone know of an online company or So. Calif company that might make custom aluminum? Any other ideas?
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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08-07-2010, 05:03 PM
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#2
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Senior Member
Monaco Owners Club
Join Date: Jan 2001
Location: Foley, AL
Posts: 1,247
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Don you might try these:
Mac's Radiator Repair
6147 SE Foster Rd
Portland OR 97206
800-835-3456
Store Locations
Radiator Supply House
4432 Hwy 20
Sweet Home, OR 97386
877-615-3002
Radiator Supply House of Sweet Home, Oregon - Radiators, Coolers, Condensers
These are the only one other than JB Radiator. JB is the original maker of the problem radiators.
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Rex
2001 Monaco Diplomat 40' PDQ - 08 Honda CR-V
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08-07-2010, 05:16 PM
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#3
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,115
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Thanks Rex......I'm adding all of these to my favorites and will spend next week calling.
I was getting ready to replace the fan belt, but I didn't think i would be pulling the radiator to do it.
Also thinking about adding the Horton fan, but really haven't heard anyone rave about it one way or the other.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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08-07-2010, 06:35 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: Jan 2001
Location: Foley, AL
Posts: 1,247
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Don I think your radiator was made by Modine and is their X-6942-50. You can search their site and hopefully come up with some useful information. They build all sorts of HVAC systems and many other items.
http://www.modine.com/v2portal/modine.portal
You man have to call them for the correct info. Also ask them about their X6940 Core/Tank Assy (Radiator, Tank Replacement)
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Rex
2001 Monaco Diplomat 40' PDQ - 08 Honda CR-V
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08-07-2010, 07:25 PM
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#5
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,115
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Rex....You're right on the money. That's the model# listed on my build sheet. I will call them and see what direction they can give me.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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08-07-2010, 09:39 PM
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#6
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Senior Member
Join Date: May 2009
Posts: 132
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Don
Instead of buying a new radiator can't you just have the original radiator flushed out and have the leak fixed at your local radiator shop ? Or am I missing somthing?
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2011 tiffin 36qsp allegro bus
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08-07-2010, 10:07 PM
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#7
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Senior Member
Monaco Owners Club
Join Date: Jan 2001
Location: Foley, AL
Posts: 1,247
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Don, check out item 130336463929 on eBay. This one is aluminum and built by Modine. The seller has his address and phone number on the page if you need to talk to him about it. The model numbers he shows is the Monaco part number for your radiator.
The one shown on eBay has a CAC, Radiator and frame. You would want to verify what he is selling is the whole package.
He is a nice guy to deal with and may offer a lower price. He can ship anywhere but must be by truck.
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Rex
2001 Monaco Diplomat 40' PDQ - 08 Honda CR-V
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08-08-2010, 05:47 AM
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#8
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Member
Join Date: Oct 2009
Posts: 73
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What Monaco models and years have the radiator problem. I'm taking delivery of a 2006 Knight this week. Is this a problem one?
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08-08-2010, 07:13 AM
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#9
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Senior Member
Monaco Owners Club
Join Date: Jan 2001
Location: Foley, AL
Posts: 1,247
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Hedgehog, those were aluminum with the trans cooler which caused the problem. I think the years were some late 2001 to 2004 and not all models. The trans cooler would leak causing antifreeze and trans fluid to mix. Ruined the transmission on some coaches.
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Rex
2001 Monaco Diplomat 40' PDQ - 08 Honda CR-V
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08-08-2010, 07:56 AM
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#10
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Senior Member
Monaco Owners Club
Join Date: Sep 2003
Location: Quitman MS
Posts: 2,967
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It was mainly some of the 01 and the 02's that had a problem with the radiator trans cooler parting in the coolant tank and after the engine was shut off the pressure from the coolant system would force coolant into the trans and when run destroy the trans, the fix was a separate trans cooler added to the setup. What Don is going through is a failure that can happen to any of us at any time its just that the alum radiators seam to fail more than the old style.
The 06 Knight is a good coach in my opinion, just check it out real good before you sign the paper work.
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Walt & Will
2000 Dynasty
2017 Ram Big Horn Crew C 4X4 w/ M&G
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08-08-2010, 08:31 AM
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#11
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Senior Member
Monaco Owners Club
Join Date: Feb 2009
Posts: 1,496
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Don,
These people might be able to help...just a thought.
Home Page
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Del & Lori 2007 Diplomat 40PDQ - 2020 Grand Cherokee TrailHawk Hemi Toad, M&G Brake System, Blue Ox.
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08-16-2010, 09:52 PM
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#12
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Senior Member
Winnebago Owners Club
Join Date: Apr 2010
Location: Pismo Beach, California
Posts: 174
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Don,
I just saw Jim at Source Engineering last week at FMCA. He quoted me $2431 for a new steel/copper rad for my 2001 Knight. 541.935.0308
Also met Will at Radiator Supply 877.615.3002 $2000 plus $100 to ship anywhere.
A friend just had it done, its a 4 man job. The new rad is 150 lbs heavier than the aluminum one.
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Bob & Kathy
2016 Itasca Navion 24V
BPOE #2504
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08-16-2010, 11:34 PM
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#13
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,115
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Bobs911.....Thanks for the info.......I think I'm going to owe Rex the alcohol of his choice. I bought a brand new assembly from Johnson's Surplus off of Ebay (Rex turned me onto the Ebay site). Johnson's bought out about 10 or 20 complete assemblies from Monaco when they closed down the Indiana plant. He's shipping me this for $878.00 including shipping.
http://cgi.ebay.com/ebaymotors/ws/eB...%3D1&viewitem=
I'm taking a chance that this is the same. All of the measurements are right on the money. It includes the CAC, fan shroud and frame.
I figure for $900.00, if this radiator lasts me another 5 years I'll be happy. I intend to use silicone hoses and ground the radiator to see if I can make it last longer. The CAC was just a bonus.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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08-17-2010, 08:11 AM
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#14
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Senior Member
Monaco Owners Club
Join Date: Jan 2001
Location: Foley, AL
Posts: 1,247
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Don that should be an exact replacement for you. Same part number. Let us know when you get it and what problem you have with installing it. Are you planning on doing the job yourself? Please post some pictures as you go. Would be a good idea to take a picture of your engine so you know how the belts are fitted in case you ever need to replace them, or just replace them when the radiator is out.
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Rex
2001 Monaco Diplomat 40' PDQ - 08 Honda CR-V
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