DIY M156 Headbolt swap Part 2




Keep in mind that if I remember correctly the vehicle needs to be at a middle high rpm range in 3rd gear which is quite a bit of speed. Whether or not this is a problem depends on where you live.
Also the dealer should charge 1 hr for the procedure so you can just pass the problem to them.
I just did my head bolts on my w211 E63. I will post more on the process later, but for now, I have a problem. I examined the engine pulley at first. It had a part number on it, it had some numbers such as 3/4 or something like that, then it had 4-5 marks and the last mark had 40 on it. I put the pulley at this 40 degree mark.
Then I took the valve cover off on the driver side and was able to put all the timing tools in place: the back plate, holding device and timing tool. At this point the passenger side cover is not touched. I changed all the bolts one at a time.
Then I went on the passenger side and back plate couldn't be inserted. It was just a little off, maybe 1 mm. I had to rotate the engine another 360 degree and stopped at that same 40 degree. All the timing tools fell in their places now. I didn't re-check the driver side as I had only one timing tool. I replaced bolts on the passenger side and installed everything back.
I started the car and the car is shaking and I am getting flashing check engine light. Did I screw up timing? Would timing tools fit if I wasn't on 40 degree though? Also, I am not sure about the electrical connectors on cam adjuster covers. There are two: top and bottom. I wasn't sure which one was which. Would mixed up electrical connectors on the adjuster cover cause vibrations, or are they the same?




Remember the camshaft rotates 1 per every two rotations of the crankshaft.




The connectors do matter but engine won't shake if you get them wrong, you'll simply get a performance error.
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I set it to 40 and was able to insert cam locking tools on the driver side. However I couldn’t insert the plate on the passenger side as it was off by 1mm. I turned the engine 360 degrees twice and now was able to lock the cams.
Last edited by Rovel; Feb 16, 2020 at 03:07 PM.
I set it to 40 and was able to insert cam locking tools on the driver side. However I couldn’t insert the plate on the passenger side as it was off by 1mm. I turned the engine 360 degrees twice and now was able to lock the cams.







