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(1)  S 715-020-C00Operate the VBV system to the full closed position (AMM 75-32-00/201).
 (2)  S 485-015-C00Attach a pull scale to the MEC feedback arm.
 NOTE:____ Use a lockwire.
 (3)  S 825-016-C00Apply a tension load of 15-17 pounds (67-76 N) in a line with the cable centerline axis.
 (4)  S 215-017-C00Keep the load while you do a check that the alignment bar of the feedback arm is aligned with the rig notch.
 (5)  S 825-018-C00If the alignment bar and the rig notch are not aligned, do the steps that follow: (a) Loosen the locking bolt on the adjustment bracket. (b) Turn the adjustment screw to align the alignment bar and the rig notch. (c) Tighten the locking bolt to 30-35 pound-inches (3.4-4.0 Newton meters). (d) Do the steps to load the MEC feedback arm for the static rig check.
 (6)  S 415-019-C00Close the left thrust reverser half (AMM 78-31-00/201).

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 75-32-05
 ALL  ú ú C05 Page 517 ú Nov 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
VARIABLE BLEED VALVE (VBV) FEEDBACK CABLE - INSPECTION/CHECK
____________________________________________________________
 1.  General
_______
 A.  The inspection of the feedback cable for the variable bleed valve includes a visual check for wear, correct installation, and if it is attached correctly.
 TASK 75-32-05-206-001-C00
 2.  VBV Feedback Cable Inspection
_____________________________
 A.  References
 (1)  
AMM 75-32-05/401, Variable Bleed Valve Feedback Cable

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

 B.  Access
 (1)  
Location Zones
 506 Engine No. 1 - aft end of the MEC
 606 Engine No. 2 - aft end of the MEC

 (2)  
Access Panels
 5837L Thrust Reverser Half - Engine No. 1
 5838L Thrust Reverser Half - Engine No. 2

 

 C.  Procedure (Fig. 601)
 S 016-002-C00
 (1)  
Open the left thrust reverser half (AMM 78-31-00/201).

 S 216-003-C00

 (2)  
Do a check of the components that follow:

 (a)  
Examine the end fitting and clevis end for damage or bends.

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

 (b)  
Examine the end fittings for marks. 1) None are permitted, polish the surface to remove marks.

 (c)  
Examine the rod end bearing to see if it freely turns and it is not too loose. 1) If it is not serviceable, replace the cable

 (AMM 75-32-05/401).

 (d)  
Examine the outer conduit for broken wire strands or wear through. 1) If it is not serviceable, replace the cable

 (AMM 75-32-05/401).

 (e)
Examine the support tube for damage, dents or bends.

 

 1)  If they are not serviceable, replace the cable (AMM 75-32-05/401).
 NOTE: The support tubes are not serviceable if they do not
____ permit easy movement of the end fitting and inner member.
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 75-32-05
 ALL  ú ú C01 Page 601 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE C
SEE B
SEEA
A
ROD END BEARING END FITTING SEE D MEC SUPPORT TUBE CLEVIS END NOSE CAP
END FITTING SLOTTED
SEE D
BRACKET SUPPORT TUBE
CONDUIT CAP NOSE CAP
SLOTTED
OUTER CONDUIT
BRACKET CONDUIT CAP OUTER CONDUIT
S-M56-MM-1014-(1)-01-B
B
JUNCTION PLATE
C S-M56-MM-1012-(1)-01-B
Variable Bleed Valve (VBV) Feedback Cable Inspection
Figure 601 (Sheet 1)

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