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07-21-2012, 02:45 PM
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#1
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Senior Member
Join Date: Dec 2011
Posts: 443
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A simple question
What is the big white plastic tank on the PS in the very rear of the engine area the one with the large lid and is there supposed to be any thing in it?? 
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Jim & Elissa Edmonds
2003 34FDDS Alpine Banks 430hp #74869
Viola, Idaho 3rd Armored Cav & 3rd Infantry Division
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07-21-2012, 05:30 PM
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#2
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Senior Member
Alpine Owners Club
Join Date: Jun 2003
Location: Ontario, CA USA
Posts: 1,402
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Than for the simple answer, if you have the Auto Battery Fill on your Alpine than that tank would hold distilled water, it is the water reservoir for the battery fill system. 
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07-21-2012, 05:36 PM
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#3
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Senior Member
Join Date: Dec 2011
Posts: 443
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I do not have a auto battery fill system on the coach. That container looks like it would hold a few gallons. So this is not a factory install? Thanks for the info Dave.
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Jim & Elissa Edmonds
2003 34FDDS Alpine Banks 430hp #74869
Viola, Idaho 3rd Armored Cav & 3rd Infantry Division
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07-21-2012, 06:46 PM
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#4
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Senior Member
Join Date: May 2008
Location: Washington
Posts: 101
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Coolant recovery tank?
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Tom and Sue
2005 Alpine FDQS
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07-21-2012, 08:43 PM
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#5
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Senior Member
Join Date: Dec 2011
Posts: 443
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That is what my first thought was but it is lacking the proper plumbing.It would hold 4 gallons of fluid easy.The construction of the bracket/support is well designed. Witch led me to think that WRV installed it as maybe an option. Just another unsolved discovery. I have also discovered that my fuel lift pump will leak now and then. I was able to get a half turn on only one of the top three bolts. I hope that cured the leak but I wouldn't bet the rent on it. The two times that I got it to leak were the two times that I had cycled the pump motor 5 or 6 times with out starting the engine one time I was wiring in a converter for towing my 95 jeep wrangler the other was when I first bought it and was trying to find out how to get the large slide out. Time will tell on the leak and if I find another drop it will be time for a new transfer pump.
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Jim & Elissa Edmonds
2003 34FDDS Alpine Banks 430hp #74869
Viola, Idaho 3rd Armored Cav & 3rd Infantry Division
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07-21-2012, 09:45 PM
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#6
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Senior Member
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,385
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Jim- post a photo of the tank, maybe someone will recognize the critter.
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Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
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07-21-2012, 10:16 PM
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#7
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Senior Member
Join Date: Dec 2011
Posts: 443
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 Here you go Mike. I think maybe Dave might be on the right track.
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Jim & Elissa Edmonds
2003 34FDDS Alpine Banks 430hp #74869
Viola, Idaho 3rd Armored Cav & 3rd Infantry Division
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07-21-2012, 10:47 PM
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#8
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Senior Member
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,385
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Never seen a battery fill tank like that. Most BFT's hold maybe 3/4 to 1 gallon. Could be the PO had a tank and installed it for that purpose.
Or maybe you have the prototype DEF engine? (kidding)
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Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
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07-22-2012, 08:51 AM
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#9
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Senior Member
Join Date: Nov 2005
Posts: 7,400
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Dont think this was a WRV option--doesnt look like anything I have ever seen on a 2003 Alpine. Tracking the "plumbing" from this tank to where ever it goes should provide some insight. Battery fill and engine coolant over flow top my list, possible uses get pretty exotic after that....
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Old Scout
2015 IH45 Foretravel
2003 Alpine 40' MDTS [Sold]
New Braunfels, Texas
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07-22-2012, 09:52 AM
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#10
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Senior Member
Alpine Owners Club
Join Date: Jun 2003
Location: Ontario, CA USA
Posts: 1,402
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Well this was not a simple question.  I have never seen this type of reservoir before on any Alpine that I have seen.  It looks like it is sitting next to the Hydraulic Reservoir. I would suggest opening the reservoir and see if you can determine the type so fluid that is in it. I would also crawl under the coach and try and trace the lines to see where they go. That should help to determine what it is used for and the type of fluid that it should contain.
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07-22-2012, 02:44 PM
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#11
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Senior Member
Join Date: Dec 2011
Posts: 443
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__________________
Jim & Elissa Edmonds
2003 34FDDS Alpine Banks 430hp #74869
Viola, Idaho 3rd Armored Cav & 3rd Infantry Division
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07-22-2012, 07:09 PM
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#12
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Senior Member
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,385
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That explains the size. I'd scrap it out, maybe some clever jamoke on eBay wants it.
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Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
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07-22-2012, 11:46 PM
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#13
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Registered User
Newmar Owners Club
Join Date: Nov 2008
Posts: 2,899
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If the PO used it, I think I would have compression check done on the engine and also have the turbo tested. Alcohol/water is not a good combination in a diesel I don't think. I also could be dead wrong, because when I was in USN, we used alcohol/water combo to give those engines a boost on TO, when planes were at max TO weight. But that was a avgas radial engine, and the AC was at 115K pounds at max, those 4 2800's needed all the help they could get.
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07-23-2012, 07:42 AM
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#14
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Senior Member
Alpine Owners Club
Join Date: Jul 2011
Location: Durango CO
Posts: 582
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Alcohol/water injector systems are not uncommon with street tuners that turbocharge high compression engines that were not designed for it to begin with. It's a good way to cool the hot compressed charge air and prevent detonation.
I have no idea what a system like that would be doing on a turbodiesel unless they were playing with a tuner or something. If it runs fine with the tank empty I'd pull it out.
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The above post is just my experience/opinion which is worth exactly what you paid for it.
[SIGPIC][/SIGPIC]
'05 Lance 845/'06 F-250 or '99 Alpine 36SDS Usually towing an '01 Wrangler locked on 35"s or moderate '98 Cherokee on 33"s (rear locker only)
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