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 (0.025 mm).
 NOTE: Use a dial gage to measure the damage.
____
 2)  A maximum 250 cycle service extension is permitted if the damage is more than 0.001 inch (0.025 mm) in depth.
 (b)  Before you install the fan blades, apply molydag in area E.
 S 416-017-C00
 (11)
 Install the fan rotor blades (AMM 72-31-02/401).

 S 416-021-C00

 (12)
 Install the spinner front and rear cones (AMM 72-31-01/401).

 S 096-019-C00

 (13)
 Remove the mats from the inlet cowl and do a check for tools and parts in the inlet.

 S 866-020-C00

 (14)
 For the applicable engine: Remove the DO-NOT-CLOSE tag and close this circuit breaker:

 (a)  P6 Load Control Center
 1) START VALVE ENG 1
 2) START VALVE ENG 2

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FAN ROTOR BLADES - APPROVED REPAIRS
___________________________________
 1.  General_______
 A.  Each fan rotor blade can be repaired by blending, as specifed in this task. A blending repair of the blade can be done with blade installed or removed. The maximum blending limits are shown in Fig. 801. Blades with damage that is more than these limits must be replaced (AMM 72-31-02/401).
 TASK 72-31-02-308-001-C00
 2.  Repair the Fan Rotor Rotor Blade________________________________
 A.  Equipment
 (1)  Template - 856A3622,
 CFM International, P.O. Box 15514,
 Cincinnati, Ohio 45215

 B.  Consumable Materials
 (1)  Abrasive cloth - silicone carbide,
 150 and 180 grit size, CP2189 or CP2191
 (Ref 70-10-01/201).

 C.  References
 (1)  
AMM 70-10-01/201, Consumable Materials

 (2)  
AMM 70-40-01/201, Fluorescent-Penetrant Inspection

 (3)  
AMM 72-31-02/401, Fan Rotor Blades

 D.  Access
 (1)  Location Zones
 502 Left Engine - Inlet and Cowl
 602 Right Engine - Inlet and Cowl

 E.  Repair the Fan Rotor Blades
 S 218-007-C00
 CAUTION:_______DO NOT MAKE TOO MUCH HEAT DURING THE BLENDING REPAIR. TOO MUCH HEAT CAN MAKE THE BLADE WEAK.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
AREA D
AREA C
AREA B
AREA A ROOT AREA

0.50 INCH
(12.7 mm)
TRAILING EDGE
0.67 INCH 0.67 INCH
(17 mm) (17 mm)
LENGTH
BLEND REPAIR LIMITS CHORD WIDTH
CRITICAL AREAS
DISTORTION (DISPLACEMENT FROM LE)

S-M56-MM-0968-(1)-04-B Fan Rotor Blade Blend Limits Figure 801 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////

LEADING EDGE WITH TEMPLATE INSTALLED
S-M56-MM-00209-00-B Fan Rotor Blade Blend Limits Figure 801 (Sheet 2)
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