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  #1  
Old 11-19-2013, 11:10 PM
Rockyriver's Avatar
1985 300TD
 
Join Date: Oct 2013
Location: Harrisburg, N.C.
Posts: 118
What's this expansion tank do on my 1985 300TD?

It's in the spare tire area of my 1985 300TD.
It has 3 hoses going to it.





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  #2  
Old 11-20-2013, 01:35 AM
Rogviler's Avatar
Unpurist
 
Join Date: Apr 2011
Location: Colorado
Posts: 787
It's a fuel expansion tank, I guess in case your main tank is too full on a hot day or something. Having problems with it or just curious?

-Rog
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  #3  
Old 11-20-2013, 02:07 AM
dieseldiehard's Avatar
Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,302
It looks like yours was replaced as it has a 1995 dated paper tag on it.
The 85 TD's used a plastic expansion tank.
I discovered that when my '85 TD tank started leaking, I was smelling fuel all the time and saw fuel dripping out of the spare wheel well.
I looked at my '79 300TD and noticed the tank was made of metal so I located an older metal expansion tank as a replacement after trying to use JB weld on the crack. just another of the little things MB did to lower the overall quality of the 1985 cars. Besides crappy paint, clear coat and that small transmission!
DDH
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  #4  
Old 11-20-2013, 06:34 AM
Rockyriver's Avatar
1985 300TD
 
Join Date: Oct 2013
Location: Harrisburg, N.C.
Posts: 118
Thanks guys for the info!!!
It makes it so easy to ask here and get answers.
Mine has all the nipples broke off, so I guess it's
Off to google land to see what I can find.
Looks like its over a $130.
Any good leads on a cheap one or a alternative tank?
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  #5  
Old 11-20-2013, 07:46 AM
Registered User
 
Join Date: Apr 2004
Location: Chicago
Posts: 197
I replaced the cracked plastic tank in my 85 TD with the metal version. No more smell. I bought it from a forum member here. I would recommend placing a WTB ad in the parts section and search there. I think there are some wagons being parted out.
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  #6  
Old 11-20-2013, 08:34 AM
Rockyriver's Avatar
1985 300TD
 
Join Date: Oct 2013
Location: Harrisburg, N.C.
Posts: 118
Quote:
Originally Posted by vollpreuss View Post
I replaced the cracked plastic tank in my 85 TD with the metal version. No more smell. I bought it from a forum member here. I would recommend placing a WTB ad in the parts section and search there. I think there are some wagons being parted out.
Do you have a part number for the metal tank?
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  #7  
Old 11-20-2013, 10:20 AM
daw_two's Avatar
diesel enthusiast
 
Join Date: Jan 2007
Location: Germantown, TN
Posts: 5,445
place a WTB ad in the parts section. The guys that visit junkyards will eventually find one for you. I've sold at least one on the forum.
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Germantown, TN

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  #8  
Old 11-20-2013, 11:39 AM
Vice President of Snark
 
Join Date: Nov 2009
Location: Austin, TX
Posts: 1,220
I think I have one from my 84. PM Me.

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