For compressor wheels with a corrosion
resistant coating; nicks, dents, etc. in area D
as shown in figure 7-12 cannot be polished/
blended without glass bead peening and
reapplication of the corrosion resistant
coating, compressor assemblies with
coated compressor rotors that are damage
must be removed and sent to depot.
TM 55-2840-241-23
d. Corrosion. Blend and polish to remove all corro-
sion caused pits by blending to limits defined for
damage. Replace the compressor when: (1) pitting
in any area of the blade forms a definite line or (2)
pit size orlocation exceeds blend limits. (See figure
7-10, 7-11, and 7-12.)
e. Erosion. Replace the compressor when erosion of a
blade tip results in a blade chord width less than the
acceptable chord blend limits. (See figure 7-12.)
7-16 Change 23
