Does anybody know the specified size for the two o-rings that go on the bolt that holds the fuel filter on? Would I be able to get these from NAPA?

Thanks,
Rob

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83 300TD, 260,000 miles, aka "Dusty"
6 vehicles, 2 cup holders (both in the dump truck)

By the way, I think these are the two seals shown as 17 and 23 in this drawing:

http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=124128%5F15S&M=602%2E962&GA=722%2E418&GM=717%2E437&CT=M&cat=502&SID=07&SGR=120&SGN=04

But perhaps that refers to the oring and the copper seal? I'm not sure. My bolt has one o-ring. I think somebody told me that it takes two o-rings.

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83 300TD, 260,000 miles, aka "Dusty"
6 vehicles, 2 cup holders (both in the dump truck)

I just received those O rings from Phil. I got several of each size to use over time. Call Phil.

Hugh Sr
1984 190d (W201)

If I am not mistaken, these o-rings come with a new fuel filter. I hardly replace them.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

No o-rings come with fuel filters, atleast not any of the fuel filters I have ever bought.

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But just to be clear: does that bolt that holds the fuel filter on take two o-rings? Mine only had one (in the machined groove). I assume that another goes on the rounded shoulder near the head. Right?

Anyway, I went to NAPA to get a couple of SAE o-rings just to see if it helped with a start problem that might be related to my IP that I mentioned in another thread. I did get it started.

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83 300TD, 260,000 miles, aka "Dusty"
6 vehicles, 2 cup holders (both in the dump truck)

I would order them from Phil to make sure they are the correct size. I tried using one from an o-ring kit and thought I had it right - hah - made for hard starts.

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Brad
1981 300TD - daily driver
1963 Chevy II
2001 F-250 7.3 Power Stroke

I cannot recall whether the W123 fuel filter comes with 2 o-rings but for sure the W126 Mahle filter does.

I don't expect MBZ would make the 2 o-ring so critical that it will give hard start if it is out of spec.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

Depends on the year model.

^ Same engine.
There were two different set ups, one has two rubber "O" rings, see pic (top number is 007603018101) the other has one "O" ring and a crush washer.
My SD has the latter, so I use a composite washer I get at the local hardware store.
No dimensions. But if you get a multi pack of "O" rings, that may have what you need.

Attached Thumbnails

 

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83 SD

84 CD

Well, now i've got two o-rings and a crush washer. So I win!

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83 300TD, 260,000 miles, aka "Dusty"
6 vehicles, 2 cup holders (both in the dump truck)

YEE HA!!!!!!!

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83 SD

84 CD