Manual Drive Train & Axles
Work Example 6

WorkKey Level: 4
NATEF Automotive Tasks: III.E.1.4

We are checking ring gear runout with a dial indicator and get a reading of 0.0015”.  The specification reads 0.002" + 0.0005" runout.  Is the ring gear runout within spec?  If not, how far out of spec is it?

Solution:

The range according to specs is as follows:
0.002" + 0.0005" = 0.0025"
0.002" – 0.0005" = 0.0015"
0.0015" < runout < 0.0025"

The gear runout is within specs.