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Forum: Tech Help

09-01-2025, 04:15 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

Also, please share any critiques, etc. that may...

Also, please share any critiques, etc. that may be helpful to someone.

Forum: Tech Help

09-01-2025, 04:15 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

That's it. Installation is the reverse of...

That's it. Installation is the reverse of removal. Valve Cover Screws get torqued to 3 N-m [27 in-lb].
*
The oil leak was not between the Cylinder Head and the Gasket. Rather, the oil went...

Forum: Tech Help

09-01-2025, 04:11 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

I had a recommendation to use black RTV with the...

I had a recommendation to use black RTV with the new Gasket. If your Valve Cover is not warped, you probably don't need it. I highly recommend, before you even open the tube of RTV, is to install...

Forum: Tech Help

09-01-2025, 04:03 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

Now remove the four screws that hold the Valve...

Now remove the four screws that hold the Valve Cover in place. Be careful and ensure the washers come out with the screw - these are probably critical for sealing, and they may need replacement (or...

Forum: Tech Help

09-01-2025, 03:57 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

Next I had to remove this vacuum line that goes...

Next I had to remove this vacuum line that goes to the Brake Booster, but for good access I had to disconnect this linkage that is part of the throttle or cruise control system (not sure). I...

Forum: Tech Help

09-01-2025, 03:47 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

Get the Spark Plug Wires and this one vacuum line...

Get the Spark Plug Wires and this one vacuum line out of the way:

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Forum: Tech Help

09-01-2025, 03:42 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

Disconnect this tube using an M5 Allen driver. ...

Disconnect this tube using an M5 Allen driver.

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Forum: Tech Help

09-01-2025, 03:36 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

So now I have fitting 1 removed from the Fuel...

So now I have fitting 1 removed from the Fuel Distributor and fitting 2 removed from the Fuel Pressure Regulator:
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Forum: Tech Help

09-01-2025, 03:32 PM

Replies: 9

W126 Valve Cover Gasket Replacement (1989 560SEC)

Views: 216

Posted By JustinDad

W126 Valve Cover Gasket Replacement (1989 560SEC)

The repair is done and the oil leak resolved. I found the problem one day when, after driving one mile and coming to a stop, I could see smoke lightly rolling out from under the hood of my car. Oil...

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