SPARK IGNITER
COOLING SHROUD
SILICONE SEAL
SEE E
SHROUD CLAMP
TYPE 4 IGNITION LEAD
D
GMM-1093232-00-B
Removal and Installation of the Spark Igniter Figure 401 (Sheet 2)
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 74-21-02
 ALL  ú ú C01 Page 403 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
COOLING AIR OUTLET SEE F
RETAINING CERAMIC
RING INSULATOR
WHITE
CHAMFERED
SILICONE SEAL
COLLAR NUT
CONTACT COUPING
CAGED SPRING
ASSEMBLY

ENGINES PRE-SB 74-009 E
COLLAR
COOLING AIR OUTLET
SEE F
RETAINING CERAMIC
RING INSULATOR
COUPING NUT
CONTACT
CAPTIVE
BLUE SPRING
SYMMETRICAL ASSEMBLY
SILICONE
SEAL

ENGINES POST-SB 74-009
E

0.055 INCH (1.397 mm) MINIMUM
F
1093233-02-A
Removal and Installation of the Spark Igniter Figure 401 (Sheet 3)
F70760
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 74-21-02
 ALL  ú ú C01.1 Page 404 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////

A-A
Removal and Installation of the Spark Igniter Figure 401 (Sheet 4)
E99536
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 74-21-02
 ALL  ú ú C01 Page 405 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(2)  Access Panels
 5737L Engine No. 1 - Right Fan Cowl Panel
 5738L Engine No. 1 - Left Thrust Reverser
 5739L Engine No. 1 - Right Thrust Reverser
 5746L Engine No. 1 - Left Fan Cowl Panel
 5837R Engine No. 2 - Right Fan Cowl Panel
 5838R Engine No. 2 - Left Thrust Reverser
 5839R Engine No. 2 - Right Thrust Reverser
 5846R Engine No. 2 - Left Fan Cowl Panel

 E. Prepare to Remove the Spark Igniter
 S 864-002-C00
 (1)  If the left ignition system igniter is to be removed, open this
 circuit breaker and attach a DO-NOT-CLOSE tag:

 (a)  P6 Load Control Center
 1) L IGN

 S 864-003-C00
 (2)  If the right ignition system igniter is to be removed, open this
 circuit breaker and attach a DO-NOT-CLOSE tag:

 (a)  P6 Load Control Center
 1) R IGN

 S 014-004-C00
 (3)  Open the right and left fan cowl panel (AMM 71-11-02/201).
 S 014-005-C00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______
 THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY
 TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.

 (4)  Open the right and left thrust reverser (AMM 78-31-00/201).
 S 034-007-C00
 WARNING:_______THE IGNITION SYSTEM VOLTAGE IS DANGEROUSLY HIGH. DO NOT TOUCH THE IGNITION COMPONENTS UNTIL YOU DO THE PROCEDURE THAT FOLLOWS. THIS PROCEDURE WILL RELEASE THE HIGH VOLTAGE FROM THE IGNITION EXCITER. IF YOU DO NOT OBEY THIS PROCEDURE, INJURY TO PERSONS CAN OCCUR.
 (5)  Do these steps to release the high voltage from the ignition
 exciter:

 (a)  
Set the start switch to the OFF position.

 (b)  
Stop (wait) for a minimum of 2 minutes.

 (c)  
Disconnect the exciter-to-igniter cable terminal from the igniter plug.

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