73-21-06
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
E. Procedure
 S 014-002-C00
 (1)  
Open the fan cowl panels (AMM 71-11-02/201).

 S 024-003-C00

 (2)  
Do these steps to remove the wiring harness (Fig. 401):

 (a)  Disconnect the clamps between the MEC, the PMC, the N1 speed sensor and the T12 temperature sensor.
 CAUTION: DO NOT LOOSEN THE LOCKWIRE CONNECTIONS OR THE HARNESS CAN
_______ BE DAMAGED. IF YOU DO NOT OBEY THIS PRECAUTION, DAMAGE TO THE HARNESS CAN OCCUR.
 (b)  Disconnect the T12 electrical connector from the T12 sensor.
 NOTE: If it is necessary, use a pair of padded-jaw pliers to
____ loosen the electrical connectors.
 (c)  
Disconnect the N1 electrical connector from the N1 speed sensor.

 (d)  
Disconnect the J3 electrical connector on the PMC.

 (e)  
Disconnect the position connector for the power lever angle from the lower aft end of the MEC.

 NOTE: Turn the position connector for the power lever angle to
____ 45 degrees to the horizontal.
 (f)  
Remove the wiring harness from the engine fan case.

 (g)  
Install the dust caps on all the open connectors.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 73-21-06
 ALL  ú ú C01 Page 402 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FLANGE NO.S  A BC D E  F  HJ  K 
UP ACCESSORY GEARBOX  MAIN ENGINE CONTROL POWERLEVER ANGLE 
SEE  A 

6:00 O'CLOCK VIEWED UP
FAN CASE 
OIL TANK  MOVABLE CONNECTOR N1 SPEED SENSOR 
UP  CLAMPS 
A  SEE  B  SENSOR 3:00 O'CLOCK T12 TEMPERATURE  J3 POWER MANAGEMENT CONTROL 
B FWD 
Figure 401 Wiring Harness Installation for the Control Parameter Components 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
TASK 73-21-06-004-004-C00
 3. Speed Sensor Cable for the N2 Control Alternator Removal
________________________________________________________
 A. General
 (1)  For this procedure the N2 control altenator speed sensor will be referred to as the speed sensor.
 B. Equipment
 (1)  Pliers - padded jaw - connector type 8498-03
 C. References
 (1)  AMM 71-11-02/201, Fan Cowl Panels
 D. Access
 (1)  
Location Zones
 502/602 Left Fan Cowl Panels
 503/603 Right Fan Cowl Panels
 506 Engine No. 1 - Fan Frame
 606 Engine No. 2 - Fan Frame

 (2)  
Access Panels
 5737L Engine No. 1 - Right Fan Cowl Panel
 5746L Engine No. 1 - Left Fan Cowl Panel
 5837R Engine No. 2 - Right Fan Cowl Panel
 5846R Engine No. 2 - Left Fan Cowl Panel

 E. Procedure
 S 014-005-C00
 (1)  
Open the fan cowl panels (AMM 71-11-02/201).

 S 024-006-C00

 (2)
Do these steps to remove the speed sensor cable (Fig. 402):

 (a)  Disconnect the clamps between the speed sensor and the PMC.
 CAUTION: DO NOT LOOSEN THE LOCKWIRE CONNECTIONS OR THE WIRING
_______ HARNESS CAN BE DAMAGED. IF YOU DO NOT OBEY THIS PRECAUTION, DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (b)  Disconnect the electrical connector from the electrical receptacle on the speed sensor found on the right (inboard) side of the speed sensor.
 NOTE: If it is necessary, use a pair of padded-jaw pliers to
　
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