TM 55-2840-231-23
2-11. Compressor Case - Repair
INITIAL SETUP
Applicable Configuration
All
Consumable Materials
Abrasive Paper (item 27, Appendix D)
Emery Cloth (item 28, Appendix D)
Paint Thinner (item 29, Appendix D)
Gray Corrosion Resistant Paint (item 30, Appendix D)
Trichloroethylene (item 13, Appendix
D)
Methylethylketone (item 32, Appendix D)
Acetone (item 39, Appendix D)
Sermetal Paint (item 44, Appendix D)
References
Para 2-10.2
COMPRESSOR/-
1. Case
Repair of the compressor case consists of
blending and polishing to remove nicks,
dents, corrosion, and erosion from the stator
vanes. Where blending is recommended, use
a medium grit stone. Where polishing is
recommended, use a fine grit stone or
abrasive paper (item 27, Appendix D). Blend
and polish vanes in a longitudinal direction
only with the repair forming a smooth blend
with the basic airfoil. No sharp edges, burrs,
cracks, or tears are acceptable after
blending.
NOTE
It is impossible to fully describe all
damage conditions that can be
encountered. If damage is within the
repair limits of the following figures
but there is reasonable doubt about
the strength of the blended vanes,
replace the compressor case halves.
Unlimited light polishing to remove
minor damage, where vane
dimensions are basically unchanged,
is permissible on any part of the
vane.
Change 11
2-37
