Looked under my hood today and noticed oil running down the filter housing. Upon closer inspection, one retaining nut was missing. I found the nut and stud fragment laying between the housing and block.

The broken end of the stud came out with my fingers. I ordered (2) 8 x 1.25mm stus 46.0mm's long to replace them.

The stud appears to have broken cleanly, but did have a distinct (albeit slight) hourglass shape to it. Most probably from 1.3 million miles of being stressed during oil changes.

Check these studs!!!!!!

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

interesting.
the stud is not supposed to be tightened much. I bet it's 1.3 million miles of PO overtightening... or have you owned it the entire life of the car?

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I was literally about to make a thread on this!

Was going to work this morning. Block or two from the house, noticed barely any oil pressure. Pulled over and checked in case it was low - wasn't. Took it back home, shut off, swipe dip and read - bone dry. Noticed a bunch of fresh rainbows on the driveway that weren't there yesterday (it's still dark and pissing rain as it usually is 200+ days / year here) so I add a couple ltrs and start up. Hear a hissing and see oil pouring from the housing. Big black puddle now.

Called in and took the day off. Cleaned up the mess. Drained the rest of the oil. Saw that part of the rubber o-ring was blown out of the cap on the one side. When I pulled the lid, one of the sleeves in the housing that the bolts thread into was up and not sitting flush like it should. Tightened the bolt back down and it sucked the sleeve back in where it should be.

Now, I changed the filter and did all that, put the lid back on and tightened it back down. The one side that came a little free doesn't want to tighten all the way good and tight and I'm afraid it's kinda broken in there and will just cause another leak. Yeah yeah, could be broken from overtightening...

My only confusion is what I should do to fix it. I have another housing handy on a junk scrap motor but I don't wanna change the whole friggin' housing. Plus, the funny thing is they use two different methods.

Car:

http://i.imgur.com/kOXJj.jpg

Spare:

http://i.imgur.com/D7bX0.jpg

The spare has headless bolts that thread through the housing whereas the car has norma bolts going into the housing. The bolts are two different sized heads. Don't know how it got this way. A mechanic replaced the engine summer 2011. Did a decent job for the most part but waaay overcharged and missed some details like this.

heeellp!!

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1981 300SD - 283,000 KM's at purchase, 360k+ now. Engine replaced at 311k. 16" CLK wheels, w126 gen II cosmetic upgrades, late w126 leather interior. RIP. Parted and gone due to fire

1987 300SDL - 243K miles and counting. In winter hibernation!

2001 Ford F250 Super Duty "Platinum Edition" Lariat 4x4 7.3L turbo diesel, 295k+ miles, various mods for reliability and performance.

I got the car 20 something years ago.

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

@ destroy,

Just double-nut and extract the stud, then replace with either stud or bolt. Threads/studs are 8mm x 1.25 46mm long...

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Simple enough!

I had a few ideas but wanted to run it by some better minds. I'll try it, thanks.

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1981 300SD - 283,000 KM's at purchase, 360k+ now. Engine replaced at 311k. 16" CLK wheels, w126 gen II cosmetic upgrades, late w126 leather interior. RIP. Parted and gone due to fire

1987 300SDL - 243K miles and counting. In winter hibernation!

2001 Ford F250 Super Duty "Platinum Edition" Lariat 4x4 7.3L turbo diesel, 295k+ miles, various mods for reliability and performance.

Can you explain the 'sleeve' comment? I thought the studs were just threaded directly into the housing.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

I had this problem six years ago, soon after I acquired my first 240D.
Fortunately, I spotted the huge black puddle before I finished backing from the driveway. Turned out one of the filter-cover studs had pulled out of the aluminum housing. Then discovered this had previously happened to the other stud. A PO or mechanic had modified an 8mm bolt by grinding away part of the bolt-head so it could be inserted from below and function as a stud where there were no longer any threads in the housing. So I duplicated the repair. No further problems until I sold the car this spring. So far no issues with the filter studs in my current 240D and 300TD.

Happy Motoring, Mark

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DrDKW

See the sleeve between the housing and the bolt? It was actually raised above the housing on mine. Gonna need some longer bolts to go all the way through so I can put a nut on both sides.

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1981 300SD - 283,000 KM's at purchase, 360k+ now. Engine replaced at 311k. 16" CLK wheels, w126 gen II cosmetic upgrades, late w126 leather interior. RIP. Parted and gone due to fire

1987 300SDL - 243K miles and counting. In winter hibernation!

2001 Ford F250 Super Duty "Platinum Edition" Lariat 4x4 7.3L turbo diesel, 295k+ miles, various mods for reliability and performance.

If it is stripped, wouldn`t a Heli Coil work?


Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

For sure, it didn't depart Stuttgart that way. Threads in cast aluminum don't withstand repeated use very well, hence the use of studs in the original design.

If you want to return to the original design and don't have enough metal left for a M8 stud, you might take a look at an SAE 3/8". It would be a bit smaller than a M10. Or maybe even an oversize 5/16.

Or, you might be able to invert a M8 bolt if you grind part of the head off.

The original studs have an unthreaded portion where they protrude from the filter-housing. I'm not aware of a 'sleeve' there.
If the housing-threads are stripped, a helicoil is an option, but you're still dealing with threads in the aluminum housing carrying the load. Plus you need to buy the helicoil kit and do extra work tapping the Filter-housing ears oversize. Also there's a slight possibility that tapping the ears oversize could weaken them (though this may be insignificant)
In my case, the stud-threads were completely gone, so little or no cutting or drilling was needed to accept a bolt. I already had an an assortment of metric bolts, so it was simple to choose a suitable candidate, grind the bolt head, as a PO had done with the first one, so it could be pushed up from below.
Short of stripping or snapping the bolt itself, or ripping the ears completely off the filter-housing, it's never going to pull loose again.
(At least while I'm maintaining it. Who knows what some oaf at Jiffy-Lube might be capable of!)

Happy Motoring, Mark

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DrDKW

That certainly does look like a sleeve in the picture. I wonder what holds it into the housing?

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

My housing (617.950) is just threaded into the aluminum. The previous poster is correct in that the studs (from Stuttgart) have an unthreaded portion in the center. To my eye, what looks like a 'sleeve' is actually the top threads that have been pulled upward....

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Interesting theory, but the funny thing is that what looked like a sleeve on my car isn't just limited to mine. It's also on my old engine, and it looks like it's on the photo I posted that I pulled off of Diesel Giant's website.

Anyway I pulled the bolts from the old engine so it'll be proper from now on but haven't been able to get any hardware to see if I can put a nut on the portion of the bolt that protrudes through to the under side of the housing. This should fix it and keep the stud held firm so the lid will stay on tight. Still convinced there's a "sleeve" of some kind and curious how it's held in there other than magick.

__________________
1981 300SD - 283,000 KM's at purchase, 360k+ now. Engine replaced at 311k. 16" CLK wheels, w126 gen II cosmetic upgrades, late w126 leather interior. RIP. Parted and gone due to fire

1987 300SDL - 243K miles and counting. In winter hibernation!

2001 Ford F250 Super Duty "Platinum Edition" Lariat 4x4 7.3L turbo diesel, 295k+ miles, various mods for reliability and performance.