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 75-31-02
 ALL  ú ú C02.1 Page 507 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
ú  (q) ENGINES POST-CFMI-SB 72-950;
 ú  Engines with this service bulletin do not use washers.
 (r) Tighten the nose cap to 180-200 pound-inches
 (20.3-22.6 Newton meters).
 (s) Install some lockwire.
 (t) Install the rod end bearing and the jamnut.
 1) Turn the rod end bearing and the jamnut on the cable.
 NOTE: Do this the same number of turns that were____
 necessary to remove the bearing.
 2) Do a check that the threads are sufficiently engaged.
 NOTE: To do this, make sure a 0.032 inch (0.80 mm)____
 diameter lockwire does not go through the witness
 hole.
 3) Tighten the jamnut against the rod end bearing to
 24-27 pound-inches (2.7-3.1 Newton meters).
 S 725-008-C00
 (4) Do the pull check.
 S 725-033-C00
 (5) If the force is more than 8 pounds (36 N), replace the cable
 (AMM 75-31-02/401).
 G.  Travel Check (Fig. 503)
 S 865-009-C00
 (1) Make sure the ends of the VSV feedback cable are disconnected from
 the MEC feedback arm and the bellcrank lever arm.
 S 035-037-C00
 (2) Discard the cotter pin.
 S 725-038-C00
 CAUTION: IF YOU CHANGE THE ADJUSTMENT OF THE FEEDBACK CABLE LENGTH, YOU_______
 MUST DO A VSV STATIC CHECK TO MAINTAIN PROPER ENGINE OPERATION.
 (3) Do a check of the cable length at the bellcrank end
 (AMM 75-31-00/201).
 (a) Operate the VSV system to the full closed position.
 (b) Pull the feedback cable at the bellcrank end until the travel
 ú  is stopped.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-31-02
 ALL  ú ú C01.1 Page 508 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE  B  SEE  B 
APPLY A FORCE OVERLAP
ACTUATOR VSV  LEVER ARM BELLCRANK  LEVER ARM BELLCRANK 

GAP
CLOSED VSV POSITION
VSV ACTUATOR
NOTE:  APPLY THE FORCE AT THE MEC END
OPEN VSV POSITION
A
Variable Stator Vane (VSV) Feedback Cable Travel Check
Figure 503 (Sheet 1)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-31-02
 ALL  ú ú C01 Page 509 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
APPLY TENSION

G-M56-MM-0159(1)-00-B
Variable Stator Vane (VSV) Feedback Cable Travel Check Figure 503 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-31-02
 ALL  ú ú C01 Page 510 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(c) Do a check for overlap of the items that follow:
 -
the centerline of the rod end bearing of the cable

 -
the centerline of the attachment hole of the bellcrank lever

 arm. 1) If there is no overlap, increase the length of the cable.
 NOTE: To do this, loosen the jamnut and turn the rod end
　
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