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77-12-00
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
G. Put the Airplane Back to Its Usual Condition
S 865-098-C00
(1) AIRPLANES WITHOUT EIS;
For the applicable engine, open these circuit breakers:
(a) P6 Main Power Distribution Panel
1) C00734 TACH IND ENG 1 N2
2) C00735 TACH IND ENG 2 N2
S 865-097-C00
(2) AIRPLANES WITH EIS;
For the applicable engine, open these circuit breakers:
(a) P6 Main Power Distribution Panel
1) C01182 EIS PRIMARY 1 (Engine 1)
2) C01184 EIS PRIMARY 2 (Engine 1)
3) C01183 EIS PRIMARY 3 (Engine 2)
4) C01185 EIS PRIMARY 4 (Engine 2)
S 085-071-C00
(3) Disconnect the test equipment.
(a)
Disconnect the function generator and the test box from the receptacle at the N2 speed sensor.
(b)
Connect the electrical connector D552 to the N2 speed sensor.
S 415-052-C00
(4)
Close the left fan cowl panel (AMM 71-11-02/201).
S 865-082-C00
(5)
AIRPLANES WITHOUT EIS;
For the applicable engine, close these circuit breakers:
(a) P6 Main Power Distribution Panel
1) C00734 TACH IND ENG 1 N2
2) C00735 TACH IND ENG 2 N2
S 865-083-C00
(6) AIRPLANES WITH EIS;
For the applicable engine, close these circuit breakers:
(a) P6 Main Power Distribution Panel
1) C01182 EIS PRIMARY 1 (Engine 1)
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////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
2) C01184 EIS PRIMARY 2 (Engine 1)
3) C01183 EIS PRIMARY 3 (Engine 2)
4) C01185 EIS PRIMARY 4 (Engine 2)
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77-12-00
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
N1 SPEED SENSOR - MAINTENANCE PRACTICES
_______________________________________
1. General
_______
A. This procedure contains four tasks:
(1)
N1 speed sensor removal
(2)
N1 speed sensor cleaning
(3)
N1 speed sensor visual check
(4)
N1 speed sensor installation.
TASK 77-12-01-002-023-C00
2. N1 Speed Sensor Removal
_______________________
A. References
(1) AMM 71-11-02/201, Fan Cowl Panels
B. Access
(1)
Location Zone
503 Left Engine - Fan Frame 4 o'clock
603 Right Engine - Fan Frame 4 o'clock
(2)
Access Panel
5737L Right Fan Cowl Panel - Left Engine
5837R Right Fan Cowl Panel - Right Engine
C. Procedure
S 012-001-C00
(1)
Open the right fan cowl panel (AMM 71-11-02/201).
S 022-027-C00
(2)
Do these steps to remove the N1 speed sensor (Fig. 201):
(a)
Disconnect the electrical cable from the N1 speed sensor.
(b)
Remove the two bolts that attach the N1 speed sensor to the fan frame.
(c)
Remove the N1 speed sensor from the fan frame.
