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+--- Thread: Hello! And question... (/showthread.php?tid=3728)
Hello! And question... - bryant.cw - 06-14-2012
Been lurking a while, but have a question.
I have a om617.952 that I swapped into my W460 G wagen. I was just going through a tune up, valve adjust, diesel purge, fuel pump timing (MW pump), filters etc. And while I was checking the cam timing/chain stretch, this is what I found. As a note, I slid the cam gear back enough to look at the woodruff key which as far as I can tell is not an offset key (I figure I would be able to see the offset step pretty readily.)
![[Image: 7187460151_78d67aae56_z.jpg]](http://farm8.staticflickr.com/7099/7187460151_78d67aae56_z.jpg)
![[Image: 7372689634_08c1875ae0_z.jpg]](http://farm8.staticflickr.com/7214/7372689634_08c1875ae0_z.jpg)
What does this mean? Shouldn't it read 2 to 7 degrees or so? It looks like -3 or so. Is this bad? Will it really affect anything?
Engine runs well.
RE: Hello! And question... - Captain America - 06-18-2012
How is that? Can you offset the cam timing the wrong way???? I dunno. Here is a link on what it should look like
http://www.peachparts.com/Wikka/OM617TimingChainStretch
Here is what mine looks like, only a couple degrees out.
http://www.superturbodiesel.com/std/thread-1479-post-30160.html#pid30160
RE: Hello! And question... - sassparilla_kid - 06-18-2012
I'm confused, which edge of the thingy are we supposed to be reading from? Left or right or middle?
Also, maybe somebody replaced the timing chain at home and got the cam offset wrong?
RE: Hello! And question... - bryant.cw - 06-21-2012
(06-18-2012, 08:35 PM)sassparilla_kid I'm confused, which edge of the thingy are we supposed to be reading from? Left or right or middle?
Also, maybe somebody replaced the timing chain at home and got the cam offset wrong?
My understanding is to read the flat side. Skip a tooth on the camshaft and you jump 18* crank timing, advanced or retarded depending on which way you skip it. Seeing as how it's only a few degrees off, I don't think it's possible that's what happened.
And yes, depending on which way you put the offset woodruff key in, you can advance or retard.
I guess the answer to my question is that I could put in an offset woodruff key to bring it back to +2* or so, but it runs well so I'm not too worried about it.