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Crankshaft Pulley Question

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Tugboat

Tugboat

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When I went to do my valve timing some weeks ago I found that the crankshaft belt pulley hole did not line up correctly when at Top Dead Center. It wasn't even close. But I proceeded on and made the mark on the pulley at the correct spot and then timed the valves. Later I had to replace my push rods and, not being able to re-seat some displaced tappets from above, proceeded to remove the head. This far into the process I decided to go further and remove what was necessary to re-paint the block (it was orange when I bought it). One last thing I considered doing before putting everything back together was setting up the crankshaft pulley in the correct position. Last night I removed the six bolts in the pulley but it did not seem to loosen the pulley so I concluded that more would have to come off first and I should wait until the next time I had the nose off. But this morning I noticed that at some point in the process my new TDC mark had moved a couple of inches (the piston hasn't as I can see it clearly), leading me to believe that perhaps it is possible to turn the pulley far enough to line up the hole in the necessary place.

Before noodling those six bolts out again I wanted to check to see if this is possible at all.

Thanks in advance.
 
Mike, as I recall the pulley halves should be free to turn a full circle once those 6 bolts are out. I'm surprised you could get them out though, as they are supposed to come in from behind and I didn't think there was enough room to get them out without at least partially moving the hub forward. Or do you already have the hub loose?
 
Randall,

Apologies, very sloppy writing on my part. I removed the nuts and not the bolts, which are still there and likely can not be removed without freeing up the hub from the looks of it, as you suggest. But, in looking at both the original parts catalog and elsewhere I can't see any reason why you shouldn't be able to rotate the two halves of the pulley, even with the bolts still in them, but without the nuts. The drawings do not appear to show anything on the crankshaft that would get in the way. But I may be missing something.

Thanks again.
 
The bolts protrude through the holes in the hub (and extension). The hub is keyed to the shaft (as well as being clamped by the center bolt & extension), so you won't be able to turn the pulley halves unless you can pull the bolts back far enough that they aren't trapped in the holes in the hub. (Which would probably mean you could remove them.)
 
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