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MTUpower 05-03-2011 05:57 PM

pulling the 603 head question
So I'm pulling the 603 head and close to and below the timing chain appears to be a allen headed bolt low and on the passenger side. Any clue as to what fits that so I can complete the pulling job? The car is not at my house so I'll want to bring the correct tools to the car. Thanks

Jeremy5848 05-03-2011 08:08 PM

Unless you mean the timing chain tensioner (32 mm socket), there is no such bolt on the OM603 engine. I just pulled and replaced my 603 head and found nothing that would match your description.

babymog 05-03-2011 10:13 PM

If you're talking about the two allen-head bolts down in the timing chain cavity, I believe that they're 6mm but might be 5mm.

Jeremy5848 05-03-2011 11:29 PM

Oh, inside the timing case! Thought you meant outside. Yes, 6 mm. Make sure you have a high-quality hex tool, these bolts are tight and you don't want to break your tool or strip the head. Also, stuff some rags into the chain case and have a magnet handy. The screw heads have a washer that you don't want to drop.

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