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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////

Variable Bleed Valve (VBV) Feedback Cable Inspection
Figure 601 (Sheet 2)

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(f)  
Examine the cable attach brackets for damage, bends or cracks. 1) If it is not serviceable, replace the bracket.

 (g)  
Examine the cable attach clamps for damage or wear.
 1) If it is not serviceable, replace the clamp.

 (h)  
Examine the cable fixed flange for damage, bends or cracks.

 1)  If it is not serviceable, replace the cable
 (AMM 75-32-05/401).

 S 416-004-C00
 (3)  Close the left thrust reverser half (AMM 78-31-00/201).
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FLEXIBLE SHAFT - REMOVAL/INSTALLATION
_____________________________________
 1.  General
_______
 A.  This procedure contains two tasks. The first task is to remove the flexible shafts. The second task is to install the flexible shafts.
 B.  The 12 variable bleed valves have 11 flexible shafts installed between the bleed valve and ballscrew actuators on the fan frame.
 TASK 75-32-07-004-001-C00
 2.  Remove the Flexible Shaft
_________________________
 A.  References
 (1)  
AMM 72-33-03/401, Fan Duct Panel

 (2)  
AMM 78-31-00/201, Thrust Reverser

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

 (2)  
Access Panels 5739L/5738L Engine No. 1 - Thrust Reverser Half 5839R/5838R Engine No. 2 - Thrust Reverser Half 5737L/5746L Engine No. 1 - Fan Cowl Assembly 5837R/5846R Engine No. 2 - Fan Cowl Assembly

 C.  Procedure (Fig. 401)
 S 014-002-C00
 (1)
Open the applicable thrust reverser half (AMM 78-31-00/201).

 S 014-003-C00

 (2)  
Remove the applicable fan duct panel (AMM 72-33-03/401).

 S 024-004-C00

 (3)  
Remove the flexible shaft as follows:

 (a)  Compress the spring, found in the hexagonal end of the flexible shaft, into the ballscrew actuator.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE A
SEE B
SPRING
HEXAGONAL END
FWD  FLEXIBLE SHAFT (11 LOCATIONS) 
FITTING END 8-POINT 
B 
A  Flexible Shaft Installation Figure 401  S-M56-MM-0370-(1)-01-B 

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