77-31-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
NOB VIBRATIONSENSOR
SEE A FWD ALTERNATE NOB VIBRATION (FFCCV) SENSOR
A
Alternate No. 1 Vibration Sensor Installation Figure 401
F41079
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
G. Return the Airplane Back to Its Usual Condition
 S 414-007-C00
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS WHEN YOU CLOSE THE THRUST REVERSERS, INJURIES TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (1)  
Close the thrust reversers (AMM 78-31-00/201).

 S 414-008-C00

 (2)  
Close the fan cowl panels (AMM 71-11-02/201).

 S 444-010-C00

 (3)  
Do the activation procedure for the thrust reverser (AMM 78-31-00/201).

 S 864-009-C00

 (4)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:

 (a)  P6 Load Control Center
 1) ENG VIBRATION MONITOR

 S 714-011-C00
 (5) Do the operational test for the AVM system (AMM 77-31-00/501).
 TASK 77-31-01-004-012-C00
 3. Remove the Alternate NOB Vibration (FFCCV) Sensor
_________________________________________________
 A. References
 (1)  
AMM 71-11-02/201, Fan Cowl Panels

 (2)  
AMM 77-31-00/501, Airborne Vibration Monitor (AVM) System

 (3)  
AMM 78-31-00/201, Thrust Reverser System

 B. Access
 (1)  Location Zone
 5700, Engine No. 1
 5800, Engine No. 2

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(2)  Access Panel
 5737L, Fan Cowl Panel, Eng. No. 1
 5837R, Fan Cowl Panel, Eng. No. 2
 5739L, Thrust Reverser, Eng. No. 1
 5839R, Thrust Reverser, Eng. No. 2

 C. Prepare to Remove the Alternate NOB Vibration (FFCCV) Sensor
 S 864-014-C00
 (1)  Open this circuit breaker and attach a DO-NOT-CLOSE tag:
 (a)  P6 Load Control Center
 1) ENG VIBRATION MONITOR

 S 044-013-C00
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE THRUST REVERSER TO
_______ PREVENT THE OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO THE EQUIPMENT.
 (2)  
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).

 S 014-015-C00

 (3)  
Open the fan cowl panels (AMM 71-11-02/201).

 S 014-016-C00
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS WHEN YOU OPEN THE THRUST REVERSERS, INJURIES TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (4)  Open the thrust reverser (AMM 78-31-00/201).
 D. Remove the Alternate NOB Vibration (FFCCV) Sensor
 S 024-017-C00
 (1)  Do these steps to remove the alternate NOB vibration (FFCCV) sensor:
 (a)  Disconnect the flex cable from the connector on the alternate sensor.
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