Brakes Work Example 3

WorkKey Level: 4
NATEF Automotive Tasks: V.C.7

A dial indicator is placed on the wear surface of a rotor and the needle sweeps from –3 to +4.  How much lateral run-out exists? Express your answer in thousandths of an inch.

Solution:

The range from +0.004 to –0.003 is 0.007.
+0.004 – –0.003 = +0.004 + 0.003 = 0.007

The lateral run-out is 7 thousandths of an inch (0.007").