3-17
3
2. Inspect the O-rings on the movable face for nicks,
tears, or swelling.
KM380A
3. Inspect two grease seals in the movable face for
nicks, cuts, or damage.
KM380B
KM382A
4. Inspect the pins and bushings for wear, flat spots,
looseness, or cracking; then measure the inside
diameter of the movable driven face bushing.
Maximum allowable service limit is 34.06 mm
KM379
KM382B
5. Measure the driven face spring free length. If the
free length is less than 83.20 mm, the spring must
be replaced.
KM376
6. Measure the fixed driven face hub outside diame-
ter using a calipers. The minimum service limit is
33.94 mm.
KM378
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