Oil filter housing -- do I have the seals? - Mercedes-Benz Forum
 
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Old 08-11-2013, 05:23 PM Thread Starter
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Oil filter housing -- do I have the seals?

I'm still (as weekend time permits--sigh!) hunting a loss of oil. Have the many other suggestions, but at this point I'm trying to understand the oil filter/oil cooler seals and I've read enough posts to completely confuse myself. My 2002 ML320 does not appear to have a cooler like is show in Detane's DIY or the .pdfs. See pics--there's nothing to the right (passenger's side direction) of the oil filter housing--the upper coolant hose dives into the engine block there. I've also seen references that say the cooler was dropped after engine #30-0331040; if I believe the Russian VIN decoder site my engine is 112942 31 053011. So I don't think I have the cooler. Correct?

But what was done instead? Do I still have seals somewhere where the housing attaches to the block or front cover? It seems like a one-piece casting, but there might be something going on in the back that I'm not spotting.

Thanks!
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Old 08-11-2013, 09:40 PM
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You do not have an oil cooler.
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Old 08-13-2013, 09:12 PM
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As 43sqd pointed out, no cooler. Drain the oil, take the filter out and you will see a nut at the bottom of the filter housing. You will need a thin walled 46mm socket. One gasket to replace after its removed between the oil filter housing and the block. Not sure of part number right now but only purchase from the dealer.

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Last edited by Oeschj; 08-14-2013 at 04:22 AM.
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Old 08-14-2013, 01:07 AM
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Quote:
Originally Posted by Oeschj View Post
As 43sqd pointed out, no cooler. Drain the oil, take the filter out and you will see a nut at the bottom of the filter housing. I believe it's 43mm but not sure. One gasket to replace after its removed between the oil filter housing and the block. Not sure of part number right now but only purchase from the dealer.

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It's a thin walled 46mm socket. Edit your post.
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Old 08-14-2013, 10:11 AM
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I didn't need a thin walled 46mm socket, I used an impact socket with a 6" extension and it fit.
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Old 08-14-2013, 11:00 AM
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Anyone has the part number for the gasket?
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Old 08-14-2013, 01:35 PM
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Originally Posted by idahombz View Post
Anyone has the part number for the gasket?
Seal number 35 = A 112 184 006 1
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Old 08-14-2013, 05:24 PM
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Why did the oil cooler get deleted after vin --------, does anyone know. Seems like madness to me. Glad mine has got it even with leak risk.
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Old 08-14-2013, 07:08 PM Thread Starter
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Wow. I'm still not seeing the split line, but it makes sense that there's a bottom seal even if there's no oil cooler. 46 mm--will any non-impact one do, or is there a particular thin-wall that's thin enough?
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Old 08-15-2013, 05:30 PM Thread Starter
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OK, I hate to go against the wisdom of this board, but I think there's no cooler and also no oil housing seal on the bottom. I don't see a nut (picture) nor any split in the casting. It certainly doesn't look like bula's diagram above.

For future reference, this is an early build (bought in Sept 2001) 2002 ML320. Many catalogs, including the Mercedes one (used by dealer sites and parts.com) show a cooler, side seals, and a bottom seal for 2002 and V6 engine in both the listings and the diagram. One or two put the caveat about engine number on it (which I doubt is even relevant in 2002); the dealer catalog does not.

At least it's not the source of my leak.
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