TM 55-2840-231-23
2-10.1 Compressor Plastic Coating - Inspection - Continued
COMPRESSOR/-
Continued
c. If more than 50 percent
of the plastic is missing/
debonded between
adjacent vanes in stages
five and six, or if 25
percent of the plastic is
missing/debonded
between adjacent vanes in
-
stages one thru four,
replace compressor case
halves.
d. Debonding and/or loss
of plastic in the blade
path areas is not
acceptable. Replace
compressor case halves.
e. Evidence of heat
discoloration on any rotor
blade tip is not -
acceptable. Replace
compressor case assembly.
f. Erosion of the plastic
coating is acceptable
unless any portion of any
single half-case vane
band (metal) can be seen.
Replace compressor case
halves if any portion of
any single half case vane
band (metal) can be seen.
Erosion patterns are
shown in the adjacent
figure.
2-36.2
Change 11
