(21)
Do the Test No. 8 - Accel/Decel Check (AMM 71-00-00/501, Power Plant Test Reference Table).
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75-31-02
ú ALL ú
ú ú ú C01.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 411Jul 12/02
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
VARIABLE STATOR VANE FEEDBACK CABLE - ADJUSTMENT/TEST
_____________________________________________________
1. General
_______
A. This procedure gives the necessary data to adjust the feedback cable for the variable stator vane (VSV). This is done after the removal or replacement of the feedback cable, the left VSV actuator and the main engine control (MEC).
B. Three procedures to adjust the feedback cable for the VSV are given:
(1)
A resistance check.
(a) The resistance check makes sure that the force necessary to move the feedback cable is not more than a specified limit.
(2)
A travel check.
(a) The travel check makes sure that the stator vanes can operate through their full travel range. It also makes sure that the stator vanes do not move the MEC internal mechanism more than its full travel range.
(3)
A static rig check.
(a) The static rig check makes sure that the feedback signal transmitted to the MEC is synchronized with the vane position.
TASK 75-31-02-705-001-C00
2. Variable Stator Vane Feedback Cable Adjustment
______________________________________________
A. Equipment
(1) Pull Scale - 0-25 pounds (0-120 N) capacity
B. Consumable Materials
(1) D00579 LPS-1 Penetrating Oil (CP2857) (AMM 70-10-01/201)
C. References
(1)
AMM 75-31-00/201, Variable Stator Vane Actuation System
(2)
AMM 75-31-02/401, Variable Stator Vane Feedback Cable
(3)
AMM 78-31-00/201, Thrust Reverser System
D. 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 5783L Engine No. 1 - Left Thrust Reverser Half 5838R Engine No. 2 - Left Thrust Reverser Half
E. Prepare for Adjustment of the Feedback Cable of the VSV (Fig. 501)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
BELLCRANK
LEVER ARM
SEE A SEE B
OUTBD SEE DBELLCRANK VSVLEVER ARM
ACTUATOR
BOLT
WASHER
NUT
ROD END
BEARING
TO THE
COTTER VSV
FEEDBACK
PIN FEEDBACK
ARM CABLE
B SEE C
OUTBD
MEC
FEEDBACK
ARM
BOLT
WASHER
NUT ROD END SEE D
BEARING
TO THE
COTTER FEEDBACKPIN ARM
MEC
C
A
SLOTTED BRACKET
NOSE CAP
ROD END BEARING TO CONDUIT CAP
SUPPORT TUBE
THE FEEDBACK ARM
JAM NUT
WITNESS HOLE
D WASHER WASHER 1 1
NOT INSTALLED ON ALL 3B1 AND 3B2 ENGINES.
G-M56-MM-0141(1)-01-B
Variable Stator Vane (VSV) Feedback Cable Rod End Connections
Figure 501
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75-31-02
ALL ú ú C01 Page 502 ú Jul 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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