Posted by Janicholson on November 18, 2008 at 15:32:50 from (66.173.50.93):
In Reply to: engineering question posted by john koritansky on November 18, 2008 at 09:43:54:
The diametral pitch of the new gear cannot be the same as the old. As such the teeth will not be able to mesh or wear properly if they do get meshed. I believe that if it is installed and not making any noise, and working it has the same number of teeth, and got miscounted, Drive gears with little strain can accommodate some mismatch, but in my experience it will fail if it actually is a tooth different. Putting the old gear on it would be prudent if you still have it. Checking it is a great idea. I have designed gear systems for several hydraulic applications the teeth need to be very accurately machined as a set to function. replacement gears even from the same design are often noisy when used on an experienced mate.
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