Oil filter housing seal and Oil cooler seals DIY - Mercedes-Benz Forum
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post #1 of 101 (permalink) Old 01-16-2010, 10:18 AM Thread Starter
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Oil filter housing seal and Oil cooler seals DIY

Oil filter housing seal and Oil cooler seals


I noticed I was leaking oil and I couldn't figure out where it was coming from. I cleaned the entire front and sides of the engine with a microfiber cloth. I had already replaced the Valve cover plate and seal a few months back, so I know that wasn't the problem (that area had no oil drips). Did some research and found out sometimes the Lower Filter Housing Seal leaks. Next thing I did after I cleaned the engine, was to start this baby up. I let it run for 10 min, and sure thing, I saw a small drip slowly creep its way out of the bottom of the filter housing. I took the chance to also replace the Oil Cooler Seals since I had to remove it in order to remove the O.F.H.S..

Part's and #'s :
112-184-0061/17 (Seal Ring for Oil Filter housing to crank case)
112-184-0361 (Seal Ring)
112-184-0261 (Seal Ring)

Tool's:
46mm socket (Very hard to find at stores, Had to ask my buddy at a shop to barrow it)
1/2" socket wrench
Extension Pipe (for better leverage when taking the bolt off)
T30 socket bit
1/4" socket wrench
1/4" socket extension
lot of rags
Needle nose pliers

I have attached the PDF files to make it easier.
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Attached Files
File Type: pdf R&I Oil Cooler.pdf (859.7 KB, 10072 views)
File Type: pdf R&I Oil Filter Housing.pdf (487.6 KB, 9943 views)
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Last edited by DETANE; 01-16-2010 at 12:02 PM.
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post #2 of 101 (permalink) Old 01-16-2010, 11:54 AM Thread Starter
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pic. step by step

pictures say it all.
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post #3 of 101 (permalink) Old 01-16-2010, 11:59 AM Thread Starter
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more//
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post #4 of 101 (permalink) Old 02-05-2010, 03:12 PM
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Oil Leak

Assume it was on the ML 320. How many miles?

Super post. I think I have the same issue on a 99 ML430 with 162,000.
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post #5 of 101 (permalink) Old 02-05-2010, 06:23 PM Thread Starter
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Quote:
Originally Posted by jamesvyu View Post
Assume it was on the ML 320. How many miles?

Super post. I think I have the same issue on a 99 ML430 with 162,000.
I have an ML430. 125K

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post #6 of 101 (permalink) Old 02-05-2010, 07:11 PM
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great job DETANE . I had the same leak several weeks ago .
But I also repleaced oil cooler , because it didn't work right .
This leak was pin in the ass to find out . Took me 2 days , and many time cleaning engine front before I found it .
I like your new car details
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post #7 of 101 (permalink) Old 02-06-2010, 09:32 AM
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Did those 2 silly o-rings seal kits actually cost $50!!
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post #8 of 101 (permalink) Old 02-06-2010, 12:45 PM
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do all ml come with the oil cooler? never seen one on my 05 ml
post #9 of 101 (permalink) Old 02-06-2010, 03:26 PM Thread Starter
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Quote:
Originally Posted by gwwaterman View Post
Did those 2 silly o-rings seal kits actually cost $50!!
yup, they did. thats with a discount included. even the dealer said it was an outrage.

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post #10 of 101 (permalink) Old 02-06-2010, 03:28 PM Thread Starter
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Quote:
Originally Posted by [email protected] View Post
do all ml come with the oil cooler? never seen one on my 05 ml
Im not sure about the cooler. But i do know the 320's Oil Filter housing unit has no bottom seal. It is actually connected to the engine.

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