S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

valve cover gaskets repair DIY

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Old 01-02-2012, 12:30 AM
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2003 C32, 2002 S55, 1999 SL500, 2004 S430
valve cover gaskets repair DIY

Every high milage mercedes I've purchased has needed valve cover gaskets.
Along with the valve cover gaskets most likely you will need the 2 hoses connecting to the left/drivers side valve cover due to the oil making the rubber hard as a rock.

I would highly recommend getting some hose pliers for the plug wires and hoses.

Here are your parts.



Release fuel pressure


I like to disconnect the fuel line asap in order to limit any excess fuel that mite drip in to the engine after the valve cover is taken off.


disconnect plug wires


Remove coils, I like to clean the metal on the bottom side of the coil, it looks like this mite be some sort of way to stay grounded.


Remove the main covers and also the ventilation cover on top of the VC, clean, reinstall valve covers, my torque spec's said 9nm for the main VC bolts. If you have a tap and dye set you mite want to use that on the ventilation cover bolts due to the old silicone clogging the threads.

Old 01-03-2012, 06:10 AM
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nice pictures
Old 02-02-2012, 04:29 PM
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This looked pretty simple? I just put it all new plugs too a couple months ago, I wish I would have done this as well as yesterday I noticed small leakage from the covers
Old 02-02-2012, 05:46 PM
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It's very easy, most of the time is spent cleaning your vc and coils. You have the kompressor type so I'm not sure if that adds any more work. I would advise you torque every thing to spec, and use a tap and dye to clean the small threads for secondary vc because the bolts tend to snap easy.
Old 03-16-2012, 11:55 PM
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photos are being moved to the "other forum"
Old 03-18-2012, 08:26 AM
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Which other forum? Peachparts benzworld ??
I can't see the pics anymore
Old 03-18-2012, 12:46 PM
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benz, I will try to post all my diy threads on peach next week. sorry for the inconvenience.

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