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Ways to establish the timing marks. V70-XC70 2006

posted by  muskox37 on  Fri Apr 1 16:54 CST 2022
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last visit: Wed Oct 8 11:54 CST 2014
[RELATED]

Hi Klaus,

This was from the Volvoxc.com website

Howard64 wrote:

I will say Volvo's timing marks are hard to eye ball correctly. Seems like 1/2 tooth off all the time. I did learned this trick from a post by JRL years ago. Haven't tried it but sounds helpful : Put a little whiteout on the old belt where it overlaps with the cam gear alignment mark and find a good spot on the crankshaft pulley to mark the pulley+belt. Transfer the marks to the new belt in all the same places and count the number of teeth in between. No more "am I 1 tooth off" worries.

This was from Xfingers

I've replaced my TB twice so not an expert. No way could I find with any certainty the timing marks on the crankshaft pulley so I made my own: Once I had the timing marks lined up on the cams and the TB cover, I took a heavy black sharpie marker and drew a line on the top of the crankshaft pulley over to the engine block. Keep in mind, after you replace the TB and start the engine, that mark will wear off instantly so make sure you fully rotate the crankshaft by hand 2x (720 degrees) and all the timing marks are still lined up before ignition.

I lined up the timing marks on the cams (not the actual teeth) with the TB cover marks. For me the marks didn't line up exactly but I got them as close as possible. Before removing the old belt, I counted the number of teeth between the marks. After installing new belt, I counted to make sure the number of teeth between the marks was the same.

Not sure if any of these make sense to you. And since I cannot find the mark on the intake cam sprocket it probably won't help me.

Bob
20






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