Up to 20% of the blades of each stage, up to
0.20 x 0.20 in. (5.1 x
5.1 mm) if downstream damage is serviceable
Up to 50% of chord maximum radial length
0.30 in. (7.6 mm) when it does not engage the stationary parts during operation
Any amount if less than
0.003 in. (0.10 mm) in depth. Scratches parallel with the platform are not serviceable.
Not serviceable
Any amount if the damage is less than 0.03 in.
(0.76 mm) See limit extensions (Ref. TASK 72-00-00-200-025).
See limit extensions (Ref. TASK 72-00-00-200-025).
See limit extensions (Ref. TASK 72-00-00-200-025).
F 『 EEFF : ALL E Page 62572-31-00
E E May 01/05 E E ECES E
F 『
E C F M E
E E
E 56-5B E
E E
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS
-------------------------------------------------------------------------------R A. Tears, nicks, Any number or amount is R dents, missing serviceable R material, erosion, R bending and burrs
R NOTE : The blade tip is the top 0.10 in. (2.5 mm) of the blade.
____
R B. Nick and dents on
R the airfoil center
R panel
R
R C. Erosion and
R scratched on the
R airfoil center
R panel
R D. Material on the
R blade
R 4. Platform of stages
R 4-9 locking blades.
R A. Clearance between
R the blade
R platforms
R B. Clearance between
R the blade locks
R and the two
R platforms located
R between the blade
R locks
R C. Distortion on the
R blades
R D. Cracks
R E. Shingling
R 5. Blade locks for
R stages 4-9 blades:
F EEFF : ALL E E ECES Any number if the damage is not cracked on the opposite side of the airfoil
Any amount
Any amount
Serviceable
Not serviceable
Any amount
Not serviceable
Not serviceable 『
E 72-31-00Page 626
E May 01/05
E
E E 56-5B E
F 『
E C F M E
E E
E E -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS
SERVICEABLE LIMITS
-------------------------------------------------------------------------------R A. Cracks One lock with a crack is See limit extensions R permitted (Ref. TASK 72-00-00-200-
025).
R B. Looseness Not serviceable See limit extensions R (Ref. TASK 72-00-00-200-025)
R NOTE : To examine the looseness, use a bent length of heavy gage wire to
____ R move the blade lock. Monitor the movement through the borescope.
R 6. Stator flow path:
R A. Missing rub Any amount R coating
R B. Cracks which are Any amount R crazed
R NOTE : The area adjacent to the borescope ports is the only rub coat you
____ R can examine.
R
Subtask 72-31-00-010-057
C. Remove the borescope equipment
(1) When inspection is complete, turn the lamp switch off. Keep the main light source blower on until the lamp and housing cools down.
(2) Before you install the borescope plugs, put the 0.37 in. (9.40 mm) diameter tapered rod into the borescope hole. This will make sure the hole is open.
(3) Install the IGV borescope plug (S1) as follows:
(a) Apply graphite grease (Material No. CP2101) or Never Seez-Pure Nickel, Special (Material No. CP2619) to the threads and pressure face of the borescope plug.
(b) Put the borescope plug in the correct borescope port. Tighten the plug by hand.
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