NO
1 EXAMINE THE PART NUMBERS
31 REPLACE THE MEC OF THE MEC AND PMC. (AMM 73-21-01/401) OR PMC ARE THE PART NUMBERS COR-(AMM 73-21-04/401). RECT FOR THE ENGINE MODEL?
YES
YES
NO
3 WAS (PMC OFF) %N2 OUT OF
LIMITS DURING PART POWER TRIM
CHECK (AMM 71-00-00/501, TEST
NO. 6)?
YES NO
NO
5 DO THE PMC AND RELATED
COMPONENTS TEST (AMM 73-21-00/
501).
IS THE PMC OPERATION COR-RECT?
IS THE N2 ALTERNATOR SERVICEABLE?
YES SEE SHEET 2 (BLOCK 13)
N1 RPM Out of Limits During MEC Part Power Trim Test
Figure 118 (Sheet 1)
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FROM SHEET 1 (BLOCK 11)
YES
NO
13 DO THE VSV FEEDBACK CABLE
STATIC RIG CHECK
(AMM 75-31-02/501).
IS THE RIG CHECK CORRECT?
YES
NO
YES
NO
17 DO THE VBV FEEDBACK CABLE
STATIC RIG CHECK (AMM 75-32-05/
501).
IS THE RIG CHECK CORRECT?
YES
NO
19 DO THE T2/CIT SENSOR TEST
(AMM 71-00-00/501), TEST
NO. 11).
ARE THE CIT AND T2 SENSORS SERVICEABLE?
YES
35 ADJUST THE VSV ACTUATORS (AMM 75-31-00/501), THEN ADJUST THE VSV FEEDBACK CABLE (AMM 75-31-02/501).
REPLACE THE MEC(AMM 73-21-01/401).
N1 RPM Out of Limits During MEC Part Power Trim Test
Figure 118 (Sheet 2)
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CFM56 ENGINES
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DIFFERENTIAL ENGINE PREREQUISITES
ACCELERATION FROM ENGINE OPERATION CAN BE NECESSARY
LOW IDLE
YES
5
VISUALLY EXAMINE THE INLET
AND EXHAUST AREAS OF THE TWO
ENGINES FOR DAMAGE.
IS DAMAGE MORE THAN THE LIMITS FOUND?
NO NO
7 DO A MEC SPECIFIC GRAVITY SETTING CHECK (AMM 71-00-58/
101, FIG. 103) ON THE TWO
ENGINES.
ARE THE SETTINGS WITHIN THE PERMITTED RANGE FOR THE FUEL?
YES
YES
9 FOR THE FASTER ENGINE, DO
A CBP TUBE CHECK
(AMM 71-00-59/101, FIG. 105).
ARE LEAKS/DAMAGE/BLOCKAGE FOUND?
NO
SEE SHEET 2 (BLOCK 11)
Differential Engine Acceleration from Low Idle
Figure 119 (Sheet 1)
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CFM56 ENGINES
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FROM SHEET 1 (BLOCK 9)
IF A SMALL ADJUSTMENT IS MADE, CONTINUE TO TROUBLE SHOOT THE PROBLEM.
Differential Engine Acceleration From Low Idle
Figure 119 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 动力装置 POWER PLANT 2(22)
