Re: Hour meter hookup? Tire PSI?

Posted by Wardner on August 28, 2006 at 00:28:43 from (4.154.244.189):

In Reply to: Hour meter hookup? Tire PSI? posted by JayWalt on August 27, 2006 at 21:41:04:

The aluminum piece that you call a gear is the tach drive gear box. Centered inside is a gear that meshes with another gear when it is properly installed. In order to get proper gear lash, that scalloped piece (what you call a gear) can be rotated. Without my going out to the barn and looking, I say that one or two small bolts hold it in place and keeps it from rotating. The little bolts nestle into scallops.

What you are calling an hour meter is a tachometer with an engine revolution odometer. It is geared to display approximate engine hours. Your 'hour meter' is not working because the tach cable is busted or fitted with the wrong ends. The problem might also be internal with the tach or the aluminum assembly I mentioned earlier. Start troubling shooting by disconnecting the cable from the tach and see if the inner cable rotates smoothly with the engine running. If that checks out, hold something like an eight penny nail to the back of the tach and spin the nail both ways with your thumb and forefinger. The needle should bounce around to an indicated 200-300 rpm. If that is OK then your tach drive (aluminum piece I mentioned in first paragraph) is no good. Take it off the distributer and inspect.

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