75-34-00
ALL ú ú C01 Page 5 ú Jul 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
5TH-STAGE START BLEED SYSTEM - ADJUSTMENT/TEST
______________________________________________
1. General_______
A. This procedure contains an operational test which makes sure the
5th-stage start bleed system is serviceable.
B. It is necessary to dry motor the engine during this procedure.
TASK 75-34-00-715-001-C00
2. Operational Test________________
A. References
(1)
AMM 71-00-00/201, Power Plant
(2)
AMM 75-34-01/401, 5th-stage Start Bleed Valve
(3)
AMM 78-31-00/201, Thrust Reverser
B. Access
(1)
Location Zones
506 Engine No. 1
606 Engine No. 2
(2)
Access Panels 5739L/5738L Engine No. 1 - Thrust Reverser Half 5839R/5838R Engine No. 2 - Thrust Reverser Half
C. Procedure (Fig. 501)
S 015-002-C00
(1) Open the left thrust reverser half (AMM 78-31-00/201).
S 865-003-C00
WARNING: MAKE SURE THAT THE PERSONS ON THE GROUND CAN SPEAK TO THE
_______ PERSONS IN THE FLIGHT COMPARTMENT CAN TALK TO EACH OTHER. THE PERSONS ON THE GROUND WILL BE IN THE FAN AIRFLOW DURING THE ENGINE DRY MOTOR PROCEDURE. IF THE PERSONS ON THE GROUND CANNOT SPEAK TO THE PERSONS IN THE FLIGHT COMPARTMENT, INJURY CAN OCCUR.
MAKE SURE THAT THE COWL/REVERSER ACTUATOR IS IN THE LOCKED POSITION. IF THE COWL/REVERSER IS NOT IN THE LOCKED POSITION, AN ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
USE AMM 71-00-00/201 TO OPERATE THE POWER PLANT. IF YOU DO NOT USE THIS PROCEDURE, YOU CAN CAUSE DAMAGE TO EQUIPMENT OR INJURY TO PERSONS.
(2) Use the Power Plant Dry-Motor procedure to motor the engine (AMM 71-00-00/201).
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75-34-00
ALL ú ú C01 Page 501 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE A
5TH-STAGE START BLEED VALVE
AIR DIFFUSER
AIR SIGNAL TUBE FROM THE START BLEED VALVE
DEFLECTOR BAFFLE FOR THE START BLEED VALVE
1 FWD
A
1 ON LATER PRODUCTION ENGINES, THE BLEED VALVE DEFLECTOR WAS REMOVED
5th-Stage Start Bleed System Operational Test Figure 501
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