71-00-50
WITH SYNC LOCKS ú CONFIG 7
WITH REVISED STOW SWITCH WIRING ú C01 Page 128
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
FROM SHEET 4
(BLOCK 3)
YES YES NO
6 DISCONNECT PLUG D3052
25 IS THERE CONTINUITY 50 REPAIR THE OPEN CIRCUIT
(D3056), FROM THE REVERSER BETWEEN PLUG D3052 (D3056), BETWEEN THE PLUG, PIN 6, AND
CONTROL VALVE MODULE, M1173 PIN 6, AND GROUND GROUND GD3044-DC (GD3042-DC)
Reverser Does Not Retract. REVERSER UNLOCKED Light Stays On When Reverse Thrust Cancelled. Figure 106 (Sheet 5)
C97124
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú
71-00-50 WITH SYNC LOCKS ú CONFIG 7 WITH REVISED STOW SWITCH WIRING ú C01 Page 129
ú Jul 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
PREREQUISITES
MAKE SURE THESE CIRCUIT BREAKERS ARE CLOSED:
ENG 1 THR REV CONT SYS
ENG 1 THR REV IND SYS
ENG 2 THR REV CONT SYS
ENG 2 THR REV IND SYS
MAKE SURE THE AIRPLANE IS IN THIS CONFIGURATION:
ELECTRICAL POWER IS ON (AMM 24-22-00/201)
HYDRAULIC POWER IS ON (AMM 29-15-00/201)
ENGINE FIRE SWITCHES ARE PUSHED IN
THRUST REVERSER SLEEVES ARE EXTENDED
REVERSE THRUST LEVER IS IN THE REVERSE IDLE POSITION
REVERSER DOES NOT THRUST REVERSER DEACTIVATED FOR GROUND MAINTENANCE
RETRACT. "REVERSER (AMM 78-31-00/201)
UNLOCKED" LIGHT
STAYS ON WHEN _______WARNING: BE CAREFUL WHEN YOU DO WORK NEAR THE THRUST REVERSER AND WHEN YOU OPERATE THE FLIGHT
REVERSE THRUST DECK CONTROLS. INJURY TO PERSONS OR DAMAGE
CANCELLED. TO EQUIPMENT CAN OCCUR.
LEVER TO THE REVERSE IDLE MENT SHORT TO GROUND
POSITION. (WDM 78-32-11,-21).
WAIT 30 SECONDS.
DOES THE CIRCUIT BREAKER
"THR REV CONT SYS" OPEN?
NO
YES
YES
20 REMOVE THE ENGINE ACCES-SORY UNIT, M528, FROM THE E3 RACK.
NO
IS THERE 28V DC BETWEEN PLUG D1458A (D1458B), PIN 21,SEE SHEET 2 AND GROUND? (BLOCK 3)
REPAIR THE CIRCUIT FROM THE ENGINE ACCESSORY UNIT, M528, PLUG D1458A (D1458B), PIN 21, TO THE CONTROL CIRCUIT BREAKER.
DO THESE STEPS TO MAKE SURE THE SYSTEM IS SERVICEABLE: . RELEASE THE MANUAL UNLOCK LEVER AT EACH LOCKING ACTUATOR . MAKE SURE THAT EACH SLEEVE AUTOMATICALLY RETRACTS . ON THE ENGINE ACCESSORY UNIT, M528, PUSH THE RESET BUTTON
TO ERASE THE FAULT INDICATIONS . EXTEND AND RETRACT THE REVERSER . MAKE SURE THAT THE OPERATION AND THE INDICATION ARE CORRECT.
Reverser Does Not Retract. REVERSER UNLOCKED Light Stays On When Reverse Thrust Cancelled. Figure 107 (Sheet 1)
C97125
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú
71-00-50 WITHOUT SYNC LOCKS ú CONFIG 7 WITH REVISED STOW SWITCH WIRING ú C01 Page 130
ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 1
(BLOCK 2)
NO
YES SEE SHEET 3
3 DEPRESSURIZE THE A (B)
(BLOCK 6)HYDRAULIC SYSTEM.
WAIT A MINIMUM OF 30 SECONDS.
DOES THE "REVERSER" LIGHT COME ON?
NO YES YES
4 DISCONNECT PLUG D3052
44 REPLACE THE REVERSER CON-(D3056), FROM THE REVERSER
TROL VALVE MODULE, M1173 CONTROL VALVE MODULE, M1173
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