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Reply to "TMCC Cab1 red knob spins freely - won't hold its speed setting"

Here's what I do periodically to renew the Cab-1 red knob.

1) Remove the 6 screws from the back of the Cab-1.  Note that the two screws at the bottom (by the red knob) are shorter than the other 4.

2) Separate the halves of the Cab-1 by gently pulling them apart.  There are some wires near the top that will keep the halves from completely separating, but that is okay.

3) The metal knob shaft fits into a hole in the rear half of the Cab-1 housing.  Stick a small (1/4 x 1/4 inch or a little larger) piece of masking tape over the hole.

4) Put the Cab-1 halves back together.  Be sure that the optical sensor board next to the red knob shaft fits into the plastic slots that hold it.  You'll need to squeeze the Cab-1 slightly so the knob shaft can pierce the tape.  A flap of tape will get pushed into the side of the hole effectively making it smaller and creating some friction for the shaft.

5) Replace the 6 screws, making sure that the short ones go in the bottom of the case.

6) If the knob still rotates too freely, open up the unit and add a second piece of tape on top of the first.

This fix has worked for me many times.

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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