Black magic of boot (trunk) fuel reservoir

[Merc_Girl]

Hi
Does anyone happen to have a cross section drawing of the fuel reservoir situated in the boot (trunk)

I’m just somewhat intrigued as to what goes on in there and how 😁

Thanks

[dirkbalter]

There is a lot of information the Tech manual on the subject. Try to search for "flower pot" as well.

[Jordan]

Hi
Does anyone happen to have a cross section drawing of the fuel reservoir situated in the boot (trunk)

I’m just somewhat intrigued as to what goes on in there and how 😁

Thanks

Not sure what you mean by the fuel reservoir?  The "flower pot" to which Dirk refers is in the fuel tank so probably not what you are referencing. 

[Paul & Dolly]

Katie
Have you looked up Fuel venting system .in Tech manual here,under Fuel system ?

Keep well

Paul

[Merc_Girl]

Thank you!!!

[ChrisInNashville]

Does this help? 

https://www.sl113.org/forums/index.php?topic=8709.0

Check out some of the linked pictures like this one

https://www.sl113.org/forums/uploaded/jeffc280sl/200857214446_fuel.jpg


I googled it and google led me back here…the source for all things w113

[Merc_Girl]

Thank you 😁

[Merc_Girl]

So looked at mine again. It certainly appears to have some ‘clips’ missing to hold it in place

I’m not sure if it’s an early pagoda thing, but ‘my pipe work’ (phna phna) is very small compared to those seen in other images, then it looks like  old tape on the end to increase the size of the pipe? The reservoir itself appears to have peeling paint on it, which is rather peculiar as I thought these were black plastic?

Is anyone able to say whether this pipe work is correct for the period (1963/64) or something has been cobbled together somehow.

Don’t be confused by red sheen on a part of reservoir  as this is a reflection off the fridge in the boot 🤣 

If not correct I’ll replace it as it looks dreadful

Thanks again

[Jonny B]

Katie,

The two smaller pipes to the left in  the photo are the connections to the two vent lines at the tank, on either side of the fuel filler neck (should make sure those are not plugged). The larger connection (where you have the clear plastic tube with the reinforcing fibers, is the vent to the outside. There should be a small FSVT - funnel shaped vent thingy hanging down visible from behind on the right side of the back panel. This is available from Authentic Classics: https://www.authenticclassics.com/Mercedes-Fuel-Evaporation-Canister-Vent-Boot-p/auth-007111.htm
KK Mfg has a tank reproduction but it is not quite the same as the original: https://www.kkmfg.com/catalog_loader2.php?page=113fuel.xml
Buds Benz also has the tank: https://www.budsbenz.com/catalog/230-250-280-sl/d-fuel
I am attaching a picture from Buds that shows the set up for the tank.
SLS out of Germany shows the set up, but does not have the tank available - they do have a clip, no 68 in this diagram: https://www.sls-hh-shop.de/main/en/mercedes-230-280sl-w113-/47-fuel-tank

Mine does not have any clips holding it in place, but I think there should be.

The small tank should not be painted, it is black plastic.

[66andBlue]

Katie
did you look here? https://www.sl113.org/wiki/Fuel/VentingSystem
If your clips are gone then the reason is most likely damaged slots in board that will no longer hold the clips when you try to slide in the connecting hose pieces or the top and bottom stubs on the tank.

The replacement tank that is sold now no longer uses the metal pipes and connecting rubber hoses. Unless you are a real stickler for originality I suggest you go with those.

[Merc_Girl]

Thanks everyone
I can’t figure out why the reservoir has been painted as, as you say, the plastic is black. Just wondering if the painted it to hide something more serious? Ie a hole which then was filled and and sprayed black to hide this. I can only presume the wrong paint was used as starting to flake off, or indeed fuel seepage has caused a chemical reaction

Bessy has new boot panels so no reason why I shouldn’t be able to reattach everything back together

Yes, looked in the Tech manual, that’s what made me question if my metal pipes were correct, as the images didn’t seem to reflect those on Bessy.

I may consider replacing it all, once I have investigated further, as the smell of fuel still lingers and getting somewhat annoying now and below the standard expected of a Merc 😁

[Paul & Dolly]

Katie

Be aware that someone may have not used fuel grade rubber pipes to connect the metal pipes either at the separator in the boot, or on the tank connections under the cover at the rear of the boot.
Is the "funny funnel device" still fitted to the vent pipe under the rear bumper ?

My car had the wrong size pipes fitted, they were also decomposing, and some pipe clips were missing on the fuel tank connections.

I removed the metal pipes, and just ran all new fuel grade "rubber"  pipes and clips ,of the correct size,  and that cured the petrol smells.

Good luck

Paul

[Merc_Girl]

Thanks honey 😁

Investigation will commence shortly !

[Paul & Dolly]

Katie

This is the pipe and fittings I used

Paul

[Merc_Girl]

Thank you

[Todd]

A good source for OEM cloth braided, fuel rated, hose, in the US, is www.autohausaz.com.  Comes in a variety of inside diameters, and there's also a diesel rated version available, which is even more durable.  They also sell the smooth OEM looking GEM hose clamps in many sizes.

[Merc_Girl]

Thank you for all your help

I’ll follow up Paul & Dolly’s suggestion first due to silly import duties  😔

[ChrisInNashville]

I had fumes in the cockpit coming from deteriorated hoses in the trunk.  I replaced everything with the setup illustrated from Buds Benz above…fixed everything.  I already had all my clips…just replaced the hoses and the chamber itself.  I also took the chance to blow out the vent line

[114015]

A good source for OEM cloth braided, fuel rated, hose, in the US, is [...]

A good source for any of these parts is Mercedes-Benz - the dealer.

Everything available, especially the correct non-decomposing fuel-resistant hose.


Achim

[Todd]

A good source for any of these parts is Mercedes-Benz - the dealer.

Everything available, especially the correct non-decomposing fuel-resistant hose.


Achim

Absolutely correct.  But not everyone has easy dealer access, and many may like the option of having the hose(s) in bulk, so that they can have it on hand.  My recommendation of the alternate US source, was not a recommendation to purchase the wrong type of hose...as I clearly stated.

[dirkbalter]

Katie,

The two smaller pipes to the left in  the photo are the connections to the two vent lines at the tank, on either side of the fuel filler neck (should make sure those are not plugged). The larger connection (where you have the clear plastic tube with the reinforcing fibers, is the vent to the outside. There should be a small FSVT - funnel shaped vent thingy hanging down visible from behind on the right side of the back panel. This is available from Authentic Classics: https://www.authenticclassics.com/Mercedes-Fuel-Evaporation-Canister-Vent-Boot-p/auth-007111.htm

I am quoting Jonny B's post from a little while ago. I am referring to the vent line going to the outside. (Not the lines to the tank vents)  Does anyone have a picture of the actual location? Where exactly does the line go to the outside and where is funnel-vent located.
A picture would be great.
Thank you.

[rwmastel]

I don't have anything disassembled in the trunk, but here's where it exits below.

Apparently "Tony" replaced my right rear bumper.

[Merc_Girl]

Interesting vent is so close to a hot exhaust even if just vapour?

[ejboyd5]

Reminds me of a "relief tube."

[dirkbalter]

I don't have anything disassembled in the trunk, but here's where it exits below.

Apparently "Tony" replaced my right rear bumper.

Perfect,
thank you very much.