What is this on the M119 - Mercedes-Benz Forum

 
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post #1 of 8 (permalink) Old 07-27-2016, 02:17 AM Thread Starter
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What is this on the M119

What are these two circled things? Do they supposed to have a gasket? Mine are covered in oil. I wonder if it's those things or valve cover gaskets.

Also, when I put ignition key to position 2, I get a weird noise coming from under the HFM. Sounds like an electric motor that is about to die. Any idea what could it be?


edit.

Googled some more and looks like those are solenoids for the cams and there should be some kind of a sealant rather than a gasket. Can someone confirm?
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post #2 of 8 (permalink) Old 07-27-2016, 08:20 AM
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Cam phazers? Just a guess. Here's an interesting read:
http://www.benzworld.org/forums/w140...ise-chain.html

2005 S430 4Matic 'Morton' W220.183 • 722.671 Rest in Peace

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post #3 of 8 (permalink) Old 07-27-2016, 08:38 AM
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MB implementation of variable camshaft/timing adjustment. Also where the Distributors and rotors are on my car.

Yes, they have a gasket and on most they do leak

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post #4 of 8 (permalink) Old 07-27-2016, 10:29 AM
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Cam coils for actuating the cam timing advance. They do not have gaskets but do not use silicone gasket maker to seal. There is a special MB sealant to seal them.
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post #5 of 8 (permalink) Old 07-27-2016, 10:54 AM Thread Starter
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Thanks guys, found exactly what I was looking for
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post #6 of 8 (permalink) Old 07-27-2016, 12:21 PM
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Talking about sealants. MB sealant suppose to be good, but expensive and for some hard to get.
I had leaky breather on 320 engine and having Permatec hi-tech differential sealer - used it and no leak for close to a year. Fact that so many MB owners report leaks on top of their engines did not made me seeking MB brand, like I do with coolant.
Bought it at NAPA

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post #7 of 8 (permalink) Old 07-27-2016, 12:26 PM
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Also professional mechanics have no time for it, but proper technique is to apply sealer, put the parts together with bolts only finger-tight and torque it following day.

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post #8 of 8 (permalink) Old 07-27-2016, 01:35 PM Thread Starter
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Quote:
Originally Posted by Kajtek1 View Post
Talking about sealants. MB sealant suppose to be good, but expensive and for some hard to get.
I had leaky breather on 320 engine and having Permatec hi-tech differential sealer - used it and no leak for close to a year. Fact that so many MB owners report leaks on top of their engines did not made me seeking MB brand, like I do with coolant.
Bought it at NAPA
Thanks for the recommendation. Part number for the original recommended sealant is 002 989 47 20 10
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