Oil filter shaft o-ring - lil help please
 

Went to change the oil and filter in the '92 (om602) today... Felt like I needed to check/change the two lil o rings at the bottom of the "stem". Just ASSuming that I would have a matching size o ring in the piles of o rings that I have in the garage I went ahead a pulled the two old ones off. They were in pretty sad shape.. Shrunken and brittle. Broke when I pulled them off and could not find a suitable replacement in the stash that I had or at any of the local auto parts places.

Can someone please help me find these two o rings?? Not sure what to call them. Not near an EPC at the moment. Didn't see anything definite in the pelican. Need to get them ASAP.

Thanks!!

Did you not get new ones in the box with the new oil filter?

Even more critical is the big one at the top. If that one is not sealed you will pump out all your oil in short order.

I don't recall ever getting those two small orings included in with the filter. Usually just the large oring for the lid and the washer(s) for the drain plug. Is there a brand that comes with the two small rings I the kit?

Oh yeah... Definitely make sure the big oring stays in place as everything gets closed up. Oil everywhere... Benz there done that.

I got the metric O-ring assortment at AutoZone when I did mine. One is a 7mm OD and one is a 6mm OD IIRC.

If you're in Columbia, shoot over to Shop Rd., exit 5 off I-77. There's a place called the "Hydraulic Shop", next to NAPA. They sized some O-rings for me. They knew everything there is to know about O-rings, Durometer scale, material, et cet. I got a set to rebuild a SLS pump (except the MB unique seal) for $1.90. Very nice folks !

You can order those two rings right from this website. It won't help you now - as they have to be shipped - but something to keep in mind for next time. Here is the link:
1992 Mercedes-Benz 300D 2.5 Sedan - Filters & Belts - Page 1

It's called an Oil Filter Housing Cover Stud O-Ring. It's a buck for 2 rings. Sadly those are not included in the oil filter kits. I found that out the hard way as well...

I think I got either a Mann or Hengst filter for my last OM603/606 oil changes, and I am almost positive they came with a full complement of o-rings...

@Jay_bob
The Mann filter kit for my om617 did not include those 2 rings. It did include the large oil ring for the filter house lid, and a crush washer for the oil pan.

^^^ Same for my '87 300D.

Thanks y'all for the info. I had called the local dealership earlier today. They said they could have them in on Tuesday. Looks like it would take until the 28th to get them here from the pelican. Either way looks like I'll be driving the El Toro for a couple of days.

The autozone assortment is like $7 and has enough for like 10 oil changes...just sayin'...

I went there and bought what they had thinking that I could see one inside the pack that looked like it would fit... No joy.

This is the thread I got my info from:
http://www.peachparts.com/shopforum/diesel-discussion/334961-oil-filter-housing-shaft-o-rings-size.html

I have the blue case metric box set from Harbor freight. :) Works good. I change those orings every other oil change anyway.

If the same as a 617,, one each, 6mm & 7mm, but you can use 6 for both.

The assortment I picked up at the local AutoZoo has what you see below.

Got it. Thanks all for the help. I picked up the metric o ring assortment from HF and it had a right size o ring in there.

I bought the metric and ASE assortments from Harbor Freight. There is frequently very little difference but sometimes one is a slightly better fit - or more importantly when the fit is tight, one works. The other doesn't.

Anyone that buys a bowden cable should always buy the correct o-ring. It isn't in the kits or at the parts store in generic form.

Actually, the harbor freight set does not have the CORRECT sizes, but they fit... I think it's a standard set with metric sizes on it... 5.8mm and 6.8mm instead of 6 and 7... just sayn...

Yeeaahh... Definitely a closer match to anything else that I could find but not and exact fit. I'll probably order a few 015-997-94-48 s to have ready for the next oil change.

I order the one size that you can buy online, but the other one I get out of the HF kit. Works great. That kit has SO MANY rings I'll never run out. :)