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09-13-2014, 01:17 PM
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#1
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Junior Member
Join Date: Aug 2014
Posts: 4
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coolant tank leak
I have coolant leak at coolant fill tank 2003 Monaco 400 Cummings where can i get replacement part Paul
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09-13-2014, 05:50 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,486
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The coolant , expansion tank, on my, Newmar on a Freightliner Chassis, is a Freightliner supplied part.
So I imagine that your coach being Monaco, the part would be Road Master, a division of Monaco. A Call to Monaco with your serial number should get you a price and part number.
With a part number you may be able to search one out on line for a better price.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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09-13-2014, 05:54 PM
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#3
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Senior Member
Solo Rvers Club
Join Date: Jul 2014
Location: Ham Lake, MN
Posts: 3,038
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Glad you're aboard Paul. Best of luck in finding the part you need. Enjoy your adventures and be safe.
__________________
Have a wonderful day!
Ken (RVM 87)
FT DP Wanna B The journey is the destination!
Retired & perfecting procrastination!
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09-13-2014, 06:01 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: Mar 2000
Location: Yuma Arizona USA
Posts: 2,996
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Even though I have a Monaco product I elected to have my plastic tank replaced with a metal Freightliner truck tank. They had to do some modifications to get it to mount solid but, I will never have to worry about it cracking again.
__________________
Brian, Loretta & Lucy (Golden Retriever)
2008 HR Endeavor 40 PDQ , ISL 400
2010 Dodge Ram 1500 Toad
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09-15-2014, 07:28 PM
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#5
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Junior Member
Join Date: Aug 2014
Posts: 4
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Monaco has nylon replacement for $ 215 plus shipping
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09-15-2014, 07:49 PM
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#6
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Senior Member
Winnebago Owners Club
Join Date: Sep 2013
Location: FTer Class of 2015 Origin: Evergreen, Colorado
Posts: 1,565
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Replacing the plastic surge tank is one of those predictable repairs. I installed a metal tank made by a company called "VML." There are two versions to the metal tank -- you want to make sure you get the one with the replaceable sight glass; it has a brass screw-in, nut-like fitting (I've attached a picture). The older metal tanks with the "built in" sight glass have a problem with the O-Ring failing under pressure. The part number for the new/improved metal surge tank with the replaceable sight glass is VML#T3495. Once you go "metal" you'll never go back! Good luck! \ken
__________________
Ken, Deb, & Gadget (WIT Club, FMCA, SKP, and grateful volunteers with Habitat for Humanity and SOWERs), traveling in a well-behaved 2005 Winnebago Vectra 40FD w/1100w solar, some gee-golly-whizbang, and a TRAILERED 2015 Cherokee TrailHawk toad.
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11-04-2014, 10:01 PM
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#7
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Registered User
Tiffin Owners Club
Join Date: Jun 2014
Posts: 32
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I have a leak on my expansion tank around the two Allen heads screws.
Looks like I am heading down the same road with my 06 Monaco / ISL 400
Does anyone know if the material of construction on these tanks has changed to make them last longer??
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11-08-2014, 07:25 AM
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#8
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Junior Member
Join Date: Aug 2014
Posts: 4
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I found one at Vernicks RV Grand Rapids best price and over night sorry out country
Paul
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11-08-2014, 08:23 AM
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#9
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,600
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I had to replace the coolant tank on my 2002 Windsor with a 8.3 ISC. I do not remember any allen head screws in the tank. Can you provide pictures.
I did extensive research on options, yes you can get metal tanks but I was not confident on the application as the design limits where and how you can mount.
I decided to go back with a Monaco replacement, which they indicate is new and improved construction using nylon. The tank does seem to be heavier and so far it doesn't seem to flex. I've driven about 3000 miles. Attached is a photo of the installation.
I bought my tank fro Guarantry RV, they had the best price ($215 including shipping) but this may change. The sensor location changed to the bottom right side, this is a Ford Parts Coolant Level Warning Sensor XC4Z-10D968-AA, 2 wire, I bought one on Ebay for ~$25. They offer a wiring harness also but I just used 2 small wire spad connectors and made my own and simply put silicon to seal. The sensor actually just sense fluid and makes a ground to the coolant to the radiator. You will also need 2 90 degree elbows on top, I bought mine from Lowes but needed 2 pieces, it would have been cheaper easier to purchase from Guarantry. I also replaced one of the two top 1/4" hoses on top as it was brittle and hard, this is the one from the engine to the tank, carries recirculating coolant, went to Autozone to match. Took me ~2 hours to change with most of this time draining the tank.
Good Luck
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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