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How do you use a dial indicator? 700 1991

posted by  dan52 on  Sun Apr 25 17:22 CST 2004
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Can't consider anyone who wants to learn something new a dummy.

Dial indicator is pretty easy to use. Most have a plunger that moves in and out under spring tension. There is a gear rack attached to the plunger and it drives a gear on the needle of the dial. The dial reads in .001" (mm available).

To use, you anchor the base on something stable and place the plunger against the surface of the disk. Rotate the disk and read the minimum and maximum values. Subtract and you have the runout.

I can't say how important it is to measure runout. If you are having problems with the brakes pulsatting, or if you are putting on new rotors and want to confirm they are true, it is probably a good idea.

Good luck,
Dan





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