BLANK?
NO YES YES
3 DO A CHECK OF THE PRIMARY
11 CONNECT THE ARINC 429
ENGINE DISPLAY AGAIN. READER TO D10146 EIS TEST CON-DOES THE NUMERIC READOUT NECTOR AND RETRIEVE ALL EXCEE-FOR N1 CONTAIN DASHES?DENCE DATA.
WAS N2 EXCEEDENCE DATA
NO
RECORDED?
NO
5 AT THE N2 SPEED SENSOR
CONNECTOR (D552), DO A CHECK
NO
FOR CONTINUITY BETWEEN PINS 4
25 REPLACE THE N2 SPEED SEN-AND 5 AND INSULATION RESIS-SOR (AMM 73-21-08/401).
TANCE BETWEEN FIRST PIN 4
(THEN PIN 5) AND SENSOR BODY.
IS CONTINUITY AND INSULA-TION RESISTANCE PRESENT?
FOR THE N2 TACHOMETER SYSTEM AND CORRECT THE FAULTS (AMM 77-12-00/501).
N2 Indication Problem
Figure 102 (Sheet 2)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
EGT INDICATION PROBLEM
NO
1 REMOVE THE APPLICABLE EGT (AMM 77-21-02/401).
CLOSE THE EGT IND (ENG 1
OR ENG 2) CIRCUIT BREAKER AND
MEASURE FOR 28V DC POWER
BETWEEN PINS, 1 AND 2 (PIN 2
GROUND) AT PLUG DISCONNECTED
FROM INDICATOR.
IS 28V DC POWER AVAILABLE?
YES
YES2 SWAP THE EGT INDICATORS,
N22 OR N23 (AMM 77-21-02/401).
DOES DISCREPANCY FOLLOW THE EGT INDICATOR?
NO
PREREQUISITES
MAKE SURE THESE CIRCUIT BREAKERS ARE CLOSED: EGT IND ENG 1 EGT IND ENG 2 FLIGHT REC AC FLIGHT REC DC
MAKE SURE THE AIRPLANE IS IN THIS CONFIGURATION: ELECTRICAL POWER IS ON (AMM 24-22-00/201)
21 CHECK THE CIRCUIT BETWEEN THE CIRCUIT BREAKERS AND THE EGT INDICATOR (WDM 77-21-11). REPAIR THE PROBLEMS THAT YOU FIND.
YES
SEE SHEET 2 (BLOCK 5)
NO
11 DISCONNECT THE EGT
THERMOCOUPLE HARNESS, M1127,
FROM THE SECONDARY JUNCTION
BOX.
EXAMINE THE RECEPTACLES AND CONNECTORS FOR DAMAGED PINS, BROKEN HARNESSES AND CONTAMINATION OF THE PARTS THAT FOLLOW: YES. HARNESS CONNECTORS . SECONDARY JUNCTION BOX
CONNECTORS
IS DAMAGED PINS, BROKEN HARNESSES OR CONNECTOR OXIDATION FOUND?
24 ISOLATE THE DAMAGED PINS OR BROKEN HARNESS (AMM 77-21-01/201) OR REPLACE THE EGT HARNESS AND PROBES (AMM 77-21-01/401).
EGT Indication Problem
Figure 103 (Sheet 1)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 1 (BLOCK 4)
NO
NO
5
DO THE EGT INDICATION
SYSTEM TEST
(AMM 77-21-00/501).
DOES THE SYSTEM PERFORM SATISFACTORILY?
YES
NO
6 MAKE SURE THE CIRCUIT BREAKERS FOR THE FLIGHT DATA
ACQUISITION UNIT (FDAU) ARE
CLOSED.
DOES ABNORMAL INDICATION OCCUR AGAIN?
26 EXAMINE THE CIRCUIT BETWEEN THE EGT INDICATOR, N22 OR N23, AND THE EGT INTERFACE CONNECTOR D2954, OR TERMINAL BLOCK, T1012, ON THE ENGINE (WDM 77-21-11). REPAIR THE
EGT Indication Problem
Figure 103 (Sheet 2)
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L17585
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
PREREQUISITES
MAKE SURE THESE CIRCUIT BREAKERS ARE CLOSED: EIS PRI 1, EIS PRI 2, EIS PRI 3, EIS PRI 4, FLIGHT REC AC FLIGHT REC DC
MAKE SURE THE AIRPLANE IS IN THIS CONFIGURATION: ELECTRICAL POWER IS ON (AMM 24-22-00/201)
EGT INDICATIONPROBLEM
YES 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：737-300 400 500 AMM 飛機維護手冊 動力裝置 POWER PLANT 2(73)
