Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: BaronYoungman on May 07, 2008, 16:24:36

Title: What is this? (Fuel Expansion Tank)
Post by: BaronYoungman on May 07, 2008, 16:24:36
Getting ready to paint the car...so now I am looking into mechanical stuff...Since I got the car this has been in the passenger side of the trunk...what is it and where to all these cut lines go?

Thanks, Bob



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Baron Youngman
1971 280 SL
1 car 15 boxes
Title: Re: What is this? (Fuel Expansion Tank)
Post by: jeffc280sl on May 07, 2008, 19:44:53
That is the fuel vapor compensating tank.  It is help in place on   the drivers side of the trunk.  Here is the info from the BBB.

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Jeff C.
1970 280SL 4-speed
Title: Re: What is this? (Fuel Expansion Tank)
Post by: tuultyme on May 07, 2008, 19:45:03
That is the fuel expansion tank which will be placed on the left side of the trunk.  Close responses but Jeff gave more information.
Bruce; 268Blaugrun(green) 1970 280SL; IL
Title: Re: What is this? (Fuel Expansion Tank)
Post by: mdsalemi on May 08, 2008, 09:33:02
Understand that we have two different things here, or at least two models.

1969 and earlier was a tank to accomodate expansion of the fuel in the main tank; it expanded into the overflow tank via vent lines, and the vapor (or fuel if the expansion was too great) vented to atmosphere via a small vent line from the expansion tank to the atmosphere; you can usually see this little pipe near the exhaust; sometimes it has a cone shaped end.  I've cut these open, there's nothing inside but the ends of three lines.  Two connect to the vent lines on either side of the filler neck where it enters the tank and the third vents to atmosphere.  Nothing else.

1970 saw (as the photo shows) the elimination of allowing fuel and vapor to escape to atmosphere (smog you know) and there was the secondary unit (were they all one??  I can't tell) that had valves and maybe internally, a carbon canister.  This kept the system closed.

Michael Salemi
1969 280SL
Signal Red 568G w/Black Leather (Restored)
President, International Stars Section
Mercedes-Benz Club of America
Title: Re: What is this? (Fuel Expansion Tank)
Post by: BaronYoungman on September 11, 2008, 15:54:39
WILL GET MY GAS TANK BACK TOMMORROW just to make sure...The 2 hoses(GASTANK1A) will connect to the expansion tank on the drivers side trunk of the car. Why 2 hoses and does it matter which goes where?(GASTANK2A)


I know I am going to put the expansion tank on the drivers side, but what type of lines do I use to connect the ones on the gas tank to those on the expansion tank?

and then the bottom line on the expansion tank goes to this cone shapped device in the trunk that has a line that heads up toward the engine ...where does that line end? Could somone take a pix of where it ends(what it connects to?)

Thanks Bob
Baronyoungman@hotmail.com
quote:
Originally posted by BaronYoungman

Getting ready to paint the car...so now I am looking into mechanical stuff...Since I got the car this has been in the passenger side of the trunk...what is it and where to all these cut lines go?

Thanks, Bob



Download Attachment: (http://images/icon_paperclip.gif) PICT0022a.jpg (http://www.sl113.org/forums/uploaded/baronyoungman/200857182112_PICT0022a.jpg)
124.18 KB

Baron Youngman
1971 280 SL
1 car 15 boxes


Download Attachment: (http://images/icon_paperclip.gif) GASTANK1A.JPG (http://www.sl113.org/forums/uploaded/baronyoungman/2008911175356_GASTANK1A.JPG)
49.41 KB

Download Attachment: (http://images/icon_paperclip.gif) GASTANK2A.jpg (http://www.sl113.org/forums/uploaded/baronyoungman/2008911175410_GASTANK2A.jpg)
62.41 KB