TM 55-2840-254-23
2-34 REPAIR COMPRESSOR ROTOR BLADES
2-34
INITIAL SETUP
Applicable Configurations:
All
Tools:
Powerplant Mechanic’s Tool Kit,
NSN 5180-00-323-4944
Technical Inspection Tool Kit,
NSN 5180-00-323-5114
Hand File Set
Micrometer Caliper Set
Materials:
Carborundum Stone (E10)
Crocus Cloth (E15)
Personnel Required:
68B10 Aircraft Powerplant Repairer
68B30 Aircraft Powerplant Inspector
References:
Task 2-31
Task 2-33
Task 2-35
1.
2.
NOTE
In following step, finish strokes shall be
parallel to leading and trailing edges.
When blade is repaired on leading or
trailing edges, blend edges to a smooth
radius.
Blend-repair compressor rotor blades (1) that have
allowable damage (Ref. Task 2-33).
Use fiIes,
Carborundum stone (E10) and crocus cloth (E15).
Inspect repaired areas of blades (1). Degree of
repair shall not exceed maximum allowable
inspection dimensions (Ref. Task 2-33) and the
following:
a.
b.
c.
d.
On airfoil surfaces (2), three-quarters of blade
thickness shall remain after repair.
Length of any repair shall be at least twice
the depth of repair.
Length of any repair shall not be longer than
five times the depth of repair.
There shall be no repair in critical area (3) of
blade. Repairs begun out of critical area (3)
shall not extend into critical area (3).
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