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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
LEFT IGNITION LEAD
IGNITION EXCITER MOUNTING NUT AND WASHER (8 LOCATIONS)
IGNITION LEAD CONNECTOR
RIGHT IGNITION LEAD
IGNITION LEAD CONNECTOR
BOND JUMPER IGNITION EXCITER
SEE A
BOND
JUMPER UPPER IGNITION EXCITER
LOWER IGNITION EXCITER
A
Ignition Exciter Inspection/Check Figure 601
ELECTRICAL
INPUT CONNECTOR
POWER SUPPLY CABLE
ELECTRICAL
INPUT CONNECTOR
POWER SUPPLY CABLE
G-M56-MM-0174(1)-00-B
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(c) Disconnect the exciter-to-igniter cable terminal from the igniter plug.
(3) S 216-003-C00Examine the ignition exciter housing for these: (a) Cracks 1) Cracks are not permitted. (b) A change in color.
NOTE:____ An indication of an overheat condition.
(c) 1) Replace the ignition exciter if the housing color changed.Holes 1) Holes are not permitted.
(4) S 216-004-C00Examine the mounting brackets for cracks. (a) Cracks are not permitted.
(5) S 216-005-C00Examine all the areas for nicks, dents or scratches. (a) Nicks, dents or scratches that are less than or equal to 0.03 inch (0.76 mm) in depth are permitted.
(6) S 216-014-C00Make sure the electrical connectors are correctly attached and are in good condition.
(7) S 216-006-C00Examine the threads of each electrical connector. If the threads have more damage than is specified below, replace the exciter. (a) More than 30 percent of the first thread on the connector is damaged. (b) More than 20 percent of the first two threads are damaged. (c) If the threads have less damage than is specified above, chase the threads.
(8) S 216-007-C00Examine the connector pins for damage. (a) Replace the exciter if the pins cannot move, are bent, broken or show erosion.
(9) S 216-008-C00Examine the connector wells for dirt.
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737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 116-013-C00
WARNING:_______ USE A GOOD FLOW OF AIR WHEN YOU CLEAN THE CONNECTOR. DO NOT
BREATHE THE FUMES FROM THE SOLVENT. KEEP THE SOLVENT AWAY FROM
SPARKS, FLAME AND HEAT. SOLVENT IS FLAMMABLE AND MUST NOT
TOUCH THE SKIN. SOLVANT CAN CAUSE INJURY OR DAMAGE TO THE
EQUIPMENT.
(10)
Clean the dirty connector wells with a brush and solvent (CP 2101) (AMM 70-10-01/201).
S 416-011-C00
(11)
Close the right fan cowl panel (AMM 71-11-02/201).
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
HIGH TENSION DISTRIBUTION - DESCRIPTION AND OPERATION
_____________________________________________________
1. General
_______
A. The high tension distribution system conducts the high voltage electrical energy developed in the ignition exciters to the spark igniter. A distribution system consists of ignition leads and spark igniters. One of two distribution systems may be installed.
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