71-00-50
 WITH SYNC LOCKS  ú  CONFIG  7
 WITH REVISED STOW SWITCH WIRING  ú  C01  Page 107
 ú  Jul 15/94 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 4
(BLOCK 4)

YES NO

5 IS THERE CONTINUITY 31 REPAIR THE OPEN CIRCUIT
BETWEEN PLUG D3052 (D3056), FROM THE REVERSER CONTROL
PIN 5, AND GROUND VALVE MODULE, M1173 (M1174),
(WDM 78-32-11,-21)? PLUG D3052 (D3056), PIN 5, TO

SPLICE SM101 (SM98), IN THEYES P6-2 CIRCUIT BREAKER PANEL (WDM 78-32-11,-21).

NO

6 IS THERE 28V DC BETWEEN
PLUG D3052 (D3056), PIN 3, AND
GROUND (WDM 78-32-11,-21)?

YES YES

7 EXAMINE THE ADJUSTMENT OF 33 REPLACE THE SWITCH
THE REVERSER STOW SWITCH, S825 (AMM 78-34-05/201).
(S827)(AMM 78-34-05/201).

IS THE ADJUSTMENT OK? NO 34 ADJUST THE SWITCH (AMM 78-34-05/201).
Reverser Does Not Extend. REVERSER UNLOCKED Light Does Not Come On.
Reverse Interlock Does Not Release.
Figure 101 (Sheet 5)

C97090
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú

 71-00-50
 WITH SYNC LOCKS  ú  CONFIG  7
 WITH REVISED STOW SWITCH WIRING  ú  C01  Page 108
 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 PUSHED IN THRUST REVERSER SLEEVES ARE RETRACTED REVERSE THRUST LEVER FULLY FORWARD AND DOWN
REVERSER DOES NOT THRUST REVERSER DEACTIVATED FOR GROUND MAINTENANCE (AMM 78-31-00/201)
EXTEND. "REVERSER UNLOCKED" LIGHT
_______BE CAREFUL WHEN YOU DO WORK NEAR THE THRUSTWARNING:
DOES NOT COME ON.
REVERSER AND WHEN YOU OPERATE THE FLIGHT REVERSE INTERLOCK DECK CONTROLS. INJURY TO PERSONS OR DAMAGE DOES NOT RELEASE. TO EQUIPMENT CAN OCCUR.

LEVER TO THE REVERSE IDLE MENT SHORT TO GROUNDPOSITION.(WDM 78-32-11,-21). DOES THE CONTROL CIRCUIT REPAIR THE PROBLEMS THAT BREAKER STAY CLOSED? YOU FIND.
YES NO NO

2 DOES THE REVERSER LIGHT 10 DO A CONTINUITY TEST 21 REPAIR THE CIRCUIT
COME ON? (WDM 78-32-11,-21): (WDM 78-32-11,-21).

1. BETWEEN SPLICE SM101 (SM98)

YES
AND THE RADIO ALTIMETER
SWITCHES, M50 AND M415,
SEE SHEET 2 AND THE AIR SENSING RELAY,
(BLOCK 3) R276

2. BETWEEN THE CONTROL CIRCUIT BREAKER AND SPLICE SM101 (SM98).
IS THERE CONTINUITY?
YES
22 REPLACE THE REVERSER CON-TROL VALVE MODULE, M1173 (M1174)(AMM 78-34-01/401).

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 Extend. REVERSER UNLOCKED Light Does Not Come On.
Reverse Interlock Does Not Release.
Figure 102 (Sheet 1)

C97092
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú

 71-00-50
 WITHOUT SYNC LOCKS  ú  CONFIG  7
 WITH REVISED STOW SWITCH WIRING  ú  C01  Page 109
 ú  Jul 15/94 

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)

YES NO NO

3 DEPRESSURIZE THE A (B)
11 DISCONNECT PLUG D3052
23 REPAIR THE OPEN CIRCUIT HYDRAULIC SYSTEM. (D3056) FROM THE REVERSER FROM THE REVERSER CONTROL WAIT A MINIMUM OF CONTROL VALVE MODULE, M1173 VALVE MODULE, M1173 (M1174),30 SECONDS.(M1174)(WDM 78-32-11,-21). PLUG D3052 (D3056), PIN 2, TO DOES THE "REVERSER" LIGHT IS THERE 28V DC BETWEEN SPLICE SM100 (SM99), IN THE GO OFF? PIN 2 AND GROUND? P6-2 CIRCUIT BREAKER PANEL (WDM 78-32-11,-21).
　
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