(10)
Remove the two bolts that attach the test bracket to the compressor case.
S 035-026-C00
(11)
Remove the nut on the stage 1 bridge connector and remove the VSV transmitter, bracket and mounting link.
S 435-027-C00
(12)
Install the nut on the stage 1 bridge connector.
(a) Tighten nut to 55-70 pound-inches (6.7-7.9 N.m).
S 435-028-C00
(13)
Install the nut on the stage 1 bridge connector.
S 435-029-C00
(14)
Tighten the bolts to 210-220 pound-inches (23.7-24.9 Newton meters).
S 865-037-C00
(15)
AIRPLANES WITHOUT THE EIS SYSTEM; For engine No. 1, remove the DO-NOT-CLOSE tag and close this circuit breaker:
(a) P6 Load Control Center 1) N2 TACH IND
S 865-089-C00
(16) AIRPLANES WITHOUT THE EIS SYSTEM; For engine No. 2, remove the DO-NOT-CLOSE tag and close this circuit breaker:
(a) P6 Load Control Center 1) N2 TACH IND
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 865-035-C00
(17) AIRPLANES WITH THE EIS SYSTEM;
For engine No. 1, remove DO-NOT-CLOSE tags and close these circuit
breakers:
(a) P6 Load Control Center
1) EIS PRI2
2) EIS PRI4
S 865-090-C00
(18) AIRPLANES WITH THE EIS SYSTEM;
For engine No. 2, remove DO-NOT-CLOSE tags and close these circuit
breakers:
(a) P6 Load Control Center
1) EIS PRI2
2) EIS PRI4
S 415-047-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
EQUIPMENT CAN OCCUR.
(19)
Close the thrust reverser (AMM 78-31-00/201).
S 415-046-C00
(20)
Close the fan cowl panel (AMM 71-11-02/201).
S 795-054-C00
(21)
Do an idle leak check (AMM 71-00-00/501, Test No. 3).
F. Example of dynamic rigging check for the VSV's and VSV adjustment to the nominal position.
NOTE: The specified position is the average of the open and the close
____
limits.
For engines having accel or starting problems, it is recommended to adjust the VSV position to the accel target (Fig. 505).
For engines having stall problems, it is recommended to adjust the VSV position to the closed side limit.
S 975-033-C00
(1) The steps that follow are an example of a dynamic rig check for the
VSV's.
(a) The engine VSV's have operated open and are set to 0.5 degrees on the indicator.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
(b)
The engine VSV's have operated closed and the VSV indicator reads 36.9 degrees on the indicator.
(c)
The engine has motored (to 24% N2) and the VSV's are on the closed stop (36.9 degrees) at maximum motor speed.
(d)
At Ground Idle:
_______________
OAT = 82°F
Pamb = 14.22 psia
N1 = 21.3%
N2 = 60.3%
VSV = 33.6 degrees (indicator reading)
(e) Calculations:
____________
Booster Temperature Rise
(Fig. 503) ....................... = 7.1°F
T25 = OAT + Booster Rise =
82 + 7.1 ......................... = 89.1°F
Correction Factor (CR) 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 空气 AIR(41)
