Mark Olson wrote:> markings...
>
> By fixing the crankshaft at TDC and putting the bar through the slots
> in the cams, the pulleys are aligned properly with the crank, because
> the slots in the ends of the cams are cut offcenter. In other words,
> when you use the tools, there's only one way for the cams to be phased
> with respect to the crank and to each other.
>
> As Berkshire Bill pointed out, you *can* do it without the tools but
> for an investment of only $20, vs a lot of time coming up with an
> alternative and less secure way, why not?
Without the tools you also risk valve damage. The 2.0 is not supposed to be an
interference motor, but in the real world it certainly is. If a piston is at TDC and
one of the cams is turned for alignment, having a valve on that cylinder(usually
exhaust?) open fully can tweak the valve enough that it won't seal.I found this out
the hard way, and have seen it numerous times.
Because of the valve train design, the cams won't stay in the proper alignment to
install the belt, they turn a few degrees due to valve spring tension.
It is possible to fashion a timing pin to hold the crank at TDC, then make cam
retainers out of flat plate steel of the proper thickness. Buy or rent the proper tools.
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