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Photo DIY- M113 Valve Cover Gasket R/R
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Posted 2/5/2015 9:40 PM
G-AMG
G-Class DIY Host




Date registered: May 2006
Location: South Texas
Vehicle(s): '04 G55, '80 280GE, '99 S420, '98 E320, 2011 E350
1000
Photo DIY- M113 Valve Cover Gasket R/R

Ok... So I start my 100K mile Service by opening up the Hood, and pop off the Air Filter Box, only to find CAKED-ON Oil, Grit and Grime, ALL over the Cylinder heads.

Since I don't like airing my dirty laundry, I refuse to show photos of how nasty it was. I am SHOCKED how the only evidence I ever had of a leak was an OCCASIONAL drop on th garage floor.

After hours of scrubbing, she is all cleaned up. In my inexperience, I pressed on to Gasket R/R. Should I have used a fraction of my brain power to think: "Why not simply RE-TIGHTEN the Valve Cover Bolts, and see if the leak stops". I guess I was so freaked by the amount of Oil, I did not want to screw around.... The parts are cheap enough, so I opted to do the job.

While at the Dealer getting the parts, the Foreman asked if I started with the Breather Cover Re-Sealing, as this is, apparently, one of the most common sources of Valve-Cover-Area leaks. Again, silly me... I hadn't even thought about the Breather Covers. Plus? In WIS, under my Model? THey don't even LIST the procedure!!! I had to go find it via my W210/E320 M112 Document! That DIY is to follow.

You will also notice I changed the Breather Hoses (also per the advice of my Foreman Friend).

Anyway, the Job is done, and hopefully I won't need to worry about this for another 100K!

G

Edited by G-AMG 2/5/2015 9:55 PM




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#226611
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Author
Posted 2/6/2015 10:19 AM
jmr89



Date registered: Nov 2012
Location: France
Vehicle(s): Class G W463 320Cab V6 >>Ancien 230 GE Cab 1990
100
Re: Photo DIY- M113 Valve Cover Gasket R/R

G-AMG thank you for sharing
#226623 - in reply to #226611
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Author
Posted 4/16/2016 2:52 PM
J.R.
Elite Veteran




Date registered: Apr 2006
Location: Southern Maryland
Vehicle(s): 00 G500, 09 911 4S, 11 Cayenne S, 86 280GE (sold)
Posts: 828
500
RE: Photo DIY- M113 Valve Cover Gasket R/R

I just finished this job for the second time in my 13 years of ownership. This is a great DIY posting so thanks G-AMG. A few thoughts and lessons learned when it's time for this job:

- YES use the RIGHT sealant
- YES pull the valve covers and install new gaskets too
- Replace all of the crankcase hoses and connectors. Its not much money and you will have a tight system when done
- Replace the MAF to Housing Intake Line (MAF width 90 degree elbow) seal and elbow to intake manifold seal. I found the MAF seal to be flexible but it would not hold the MAF tight enough for me to confirm a good seal. The new seal was very tight.
- Use only Mercedes branded hoses, connectors and gaskets. I have found that their formulas are superior in this regard.
#232125 - in reply to #226611
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