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 72-31-01
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////

NOTE:____  MILLIMETERS IN PARENTHESES. DIMENSIONS ARE IN INCHES WITH  S-M56-MM-00960-03-B 
Bonded Lip Seal Inspection Figure 602

 G37793
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
FAN ROTOR BLADES - MAINTENANCE PRACTICES
________________________________________
 1.  General_______
 A.  This procedure gives the data for the lubrication of the fan rotor blades and the fan disk.
 B.  This procedure will decrease the wear on the blade blade and/or fan disk, and also can decrease the engine vibration, which occurs when the fan blades become seized in the disk.
 C.  Lubrication of the fan disk and fan blades will also increase the service life of these components.
 TASK 72-31-02-642-008-C00
 2.  Lubrication of Fan Rotor Blades and Fan Disk Dovetails______________________________________________________
 A.  Equipment
 (1)  
Protective mats (2 are necessary) -P T P Pad (Sewn Construction) (V53912), or

 Neoprene sponge, 1.0 inch thick, approximately 3.0 x 4.0 feet with warning streamer attached.

 (2)  
Fan disk dovetail fretting/wear inspection
 tool, 856A6629

 (3)  
Brush - soft bristle (local purchase).

 B.  Consumable Materials
 (1)  
Isopropyl Alcohol - CP1041.

 (2)  
Acetone - CP1039

 C.  References
 (1)  
AMM 71-00-00/501, Power Plant

 (2)  
AMM 72-31-00/501, Fan and Booster

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

 (4)  
AMM 72-31-02/601, Fan Rotor Blades

 (5)  
CFMI Standard Practices Manual, 70-63-15

 D.  Access
 (1)  Location Zones
 506 No. 1 Engine
 606 No. 2 Engine

 E.  Prepare for the Lubrication of the Fan Rotor Blades and Fan Disk
 S 862-009-C00
 (1)  Make sure the start levers are in the CUTOFF position.
 (a) Install the DO-NOT-OPERATE tags on the start levers.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 862-010-C00
 (2)  Open these circuit breakers:
 (a)  Main Power Distribution Panel P6
 1) ENG 1 START VALVE
 2) ENG 2 START VALVE

 S 092-021-C00
 CAUTION:_______MAKE SURE YOU INSTALL THE MATS IN THE INLET COWL. THIS WILL GIVE PROTECTION FROM TOOLS, PARTS, OR UNWANTED MATERIAL THAT FALL ON THE INLET COWL.
 (3)  Install protective mats on the lower surface in the inlet cowl.
 (a)  Make sure you apply tape to attach the mats to the inlet cowl.
 F. Lubrication of the Fan Rotor Blades and Fan Disk
 S 952-019-C00
 (1)  
Make a mark on the fan blades to show their position on the fan disk.

 S 022-020-C00

 (2)  
Remove the fan blades (AMM 72-31-02/401).

 S 112-018-C00
 WARNING:_______DO NOT BREATHE THE FUMES FROM THE SOLVENT. DO NOT GET THE SOLVENTS ON YOUR SKIN OR CLOTHING. USE THE SOLVENTS ONLY WITH A SUFFICIENT FLOW OF AIR. THE SOLVENTS ARE FLAMMABLE AND CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
　
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