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Old 03-28-2013
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Re: Hurth Transmission not Engaging

Jim,

Before you get ahead of yourself, wait until the tranny's removed and you know exactly what has failed.

Besides the tranny, the broken bits could also be from your damper plate. If it failed, then your tranny may not need to be replaced.

Like Faster advises, the whole drive train needs a good look over.

The ZF boxes are pretty much the same as the old Hurth boxes. The gearing ratios are a little different, but the dimensions are the same. You should double check the dimensions, but I think that the ZF-10M would be a bolt-in replacement. I know it's a bolt-in for my HBW-100, and I think all the smaller boxes were built using the same cases. If you wind up replacing the tranny, you will need to verify what damper plate you need. Check the diameter, the bolt pattern and the input shaft configuration (# of splines and dimensions, e.g., mine's a 10/29/39.
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