REPLACE THE L (R) SLEEVE SYNCLOCK (AMM 78-34-10/401). SEE SHEET 3
IF THERE IS NOT GROUND, (BLOCK 21A)
EXAMINE THE CIRCUIT FROM THE L (R) SLEEVE SYNC LOCK, CONNECTOR D1008 OR D1016, PIN 2, TO GROUND.
REPAIR THE PROBLEMS THAT YOU FIND.
Reverser Does Not Retract. REVERSER UNLOCKED Light Stays On When Reverse Thrust Cancelled. Figure 106 (Sheet 2)
C97119
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú
71-00-50
WITH SYNC LOCKS ú CONFIG 7
WITH REVISED STOW SWITCH WIRING ú C01 Page 126
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 2 (BLOCK 21)
NO
YES
21A OPEN THE CIRCUIT BREAKER
"ENG 1 SYNC LOCK" ("ENG 2 SYNC
LOCK" AND "ENG 2 SYNC LOCK-
ALTN").
REMOVE THE SYNC LOCK LATCH RELAY, R477 (R479).
CLOSE THE CIRCUIT BREAKER "ENG 1 SYNC LOCK" ("ENG 2 SYNC LOCK" AND "ENG 2 SYNC LOCK-ALTN").
MOVE THE REVERSE THRUST LEVER FROM THE STOW POSITION,THEN PUT IT BACK IN THE STOW POSITION.
IN LESS THAN 120 SECONDS FROM THE TIME YOU PUT THEREVERSE THRUST LEVER BACK IN THE STOW POSITION, DO A CHECK FOR GROUND AT THE SYNC LOCK LATCH RELAY, R477 (R479), CONNECTOR D10634 (D10638), PIN Y2.
DID YOU GET A GROUND?
NO
NO
21B DO A CHECK FOR 28V DC AT THE SYNC LOCK LATCH RELAY,
R477 (R479), CONNECTOR D10634
(D10638), PINS A1 AND B1.
IS THERE 28V DC AT EACH PIN?
YES
42B EXAMINE THE CIRCUIT FROM
THE SYNC LOCK LATCH RELAY,
R477 (R479), CONNECTOR D10634
(D10638), PIN A1 OR B1, TO THE
CIRCUIT BREAKER "ENG 1 SYNC
LOCK" ("ENG 2 SYNC LOCK" AND
"ENG 2 SYNC LOCK-ALTN"). REPAIR THE PROBLEMS THAT YOU FIND.
1
43 REPLACE THE SYNC LOCK LATCH RELAY, R477 (R479).
IF THE PROBLEM CONTINUES, EXAMINE THE CIRCUIT FROM THESYNC LOCK LATCH RELAY, R477 (R479), TO THE SYNC LOCK, V148 OR V150 (WDM 78-32-51, -61).
REPAIR THE PROBLEMS THAT YOU FIND.
Reverser Does Not Retract. REVERSER UNLOCKED Light Stays On When Reverse Thrust Cancelled. Figure 106 (Sheet 3)
C97120
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú
71-00-50 WITH SYNC LOCKS ú CONFIG 7 WITH REVISED STOW SWITCH WIRING ú C01 Page 127
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 2
(BLOCK 2)
NO
YES SEE SHEET 5
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
(M1174)(AMM 78-34-01/401). (M1174)(WDM 78-32-11,-21).
1
NO
IS THERE CONTINUITY BETWEEN THE PLUG, PIN 7, AND GROUND?45 REPAIR THE OPEN CIRCUIT
NO
NO
5 DISCONNECT THE PLUG FROM
THE CONTROL STAND, CONNECTOR
D5148 (WDM 78-32-11,-21).
IS THERE CONTINUITY
FROM THE REVERSER CONTROL VALVE MODULE, M1173 (M1174), PLUG D3052 (D3056), PIN 2, TO SPLICE SM100 (SM99) (WDM 78-32-11,-21).
1
YES23 EXAMINE THE ADJUSTMENT OF THE REVERSER ARM SWITCH, S824(S826)(AMM 78-34-05/201).
IS THE ADJUSTMENT OK?
BETWEEN THE RECEPTACLE, PINS 4
NO
AND 5 (1 AND 2)?
47 ADJUST THE SWITCH
YES (AMM 78-34-05/201).
YES
24 DO A CONTINUITY TEST
48 REPLACE THE ENGINE ACCES-FROM THE REVERSER CONTROL SORY UNIT, M528 (AMM 78-34-06/
VALVE MODULE, M1173 (M1174), 401).
PLUG D3052 (D3056), PIN 7, TO
THE ENGINE ACCESSORY UNIT,
M528, PLUG D1458A (D1458B),
PIN 24 (WDM 78-32-11,-21).
IS THERE CONTINUITY?
NO
Reverser Does Not Retract. REVERSER UNLOCKED Light Stays On When Reverse Thrust Cancelled. Figure 106 (Sheet 4) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 动力装置 POWER PLANT 2(49)
