IS THE OPERATION AND ADJUSTMENT OK?

YESNO

3 EXAMINE THE SENSOR-TO-TARGET GAP FOR THE AUTO RESTOW
PROXIMITY SENSORS, S831 AND
S832 (AMM 78-34-03/201).

ARE THE GAPS OK?

YES SEE SHEET 2
(BLOCK 4)

DO THESE STEPS TO MAKE SURE THE SYSTEM IS SERVICEABLE:
. ON THE ENGINE ACCESSORY UNIT, M528, PUSH THE RESET
BUTTON TO ERASE THE FAULT INDICATIONS
. DO THE OPERATIONAL TEST FOR THE THRUST REVERSER
(AMM 78-31-00/501).

AIRPLANES WITH THRUST REVERSER SYNC LOCKS
REVERSER Fault Light Comes ON on Ground with Reverser Retracted. Reverser Operates Normally Figure 112 (Sheet 1)
C97143
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú

 71-00-50
 WITH AND WITHOUT SYNC LOCKS  ú  CONFIG  7
 ú  C01  Page 148
 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 3)
YES YES

4 DO THE DEACTIVATION PROCE-
34 AT EACH OF THE UPPERDURE FOR THE THRUST REVERSER (LOCKING) ACTUATORS, EXAMINE SYSTEM FOR GROUND MAINTENANCE THE GAP AT THE ROD END FROM (AMM 78-31-00/201). THE ROD STOP TO THE GLAND NUT
DOES THE "REVERSER TO MAKE SURE THAT THE GAP DOES UNLOCKED" LIGHT COME ON? NOT EXCEED 0.033 IN.

(0.84 MM).
NO
REPLACE THE ACTUATOR WITH GAP THAT IS MORE THAN THELIMIT (AMM 78-31-03/401).
YES YES

5 OPEN AND CLOSE THE CIRCUIT
21 DO THE ACTIVATION PROCE-BREAKER "THR REV CONT SYS". DURE FOR THE THRUST REVERSER

PUSH THE APPLICABLE "T/R SYSTEM FOR GROUND MAINTENANCE RESET" BUTTON ON THE ENGINE(AMM 78-31-00/201). ACCESSORY UNIT, M528. IS ONE SLEEVE SLOWER THAN
DOES THE "REVERSER" LIGHT THE OTHER BY 5 SECONDS OR GO OFF?MORE?

NO
NO

36 REPLACE THE ENGINE ACCES-SEE SHEET 3 SORY UNIT, M528 (AMM 78-34-06/ (BLOCK 6) 401).
REVERSER Fault Light Comes ON on Ground with Reverser Retracted. Reverser Operates Normally Figure 112 (Sheet 2)
C97144
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú

 71-00-50
 WITH AND WITHOUT SYNC LOCKS  ú  CONFIG  7
 ú  C01  Page 149
 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 5)
NO YES
6 DISCONNECT PLUG D3030

(D3034) FROM CONNECTOR D404 ON
THE RIGHT SIDE OF THE FAN COWL
SUPPORT BEAM (WDM 78-32-11,
-21).
 IS THERE 28V DC BETWEEN THE RECEPTACLE, PIN 27, AND GROUND?
NO
37 ADJUST THE SENSOR-TO-TARGET GAP OF SENSORS, S831 AND S832 (AMM 78-34-03/401).

39 REPLACE THE ENGINE ACCES-SORY UNIT, M528 (AMM 78-34-06/ 401).

38 REPLACE THE ENGINE ACCES-SORY UNIT, M528 (AMM 78-34-06/ 401).

YES

NO
7 DISCONNECT PLUG D3052
24 PULL THE ENGINE ACCESSORY

(D3056) FROM THE REVERSER CON-UNIT, M528, AS NECESSARY TO
TROL VALVE MODULE, M1173DISCONNECT D1458A (D1458B)
(M1174)(WDM 78-32-11,-21). (WDM 78-32-11,-21).
 IS THERE CONTINUITY IS THERE CONTINUITY FROM BETWEEN THE PLUG, PIN 7, AND THE CONTROL VALVE MODULE PLUG, GROUND? D3052 (D3056), PIN 7, AND
GROUND?
NO
YES

SEE SHEET 4

(BLOCK 8)  SEE SHEET 4
(BLOCK 25)
REVERSER Fault Light Comes ON on Ground with Reverser Retracted. Reverser Operates Normally Figure 112 (Sheet 3)
C97145
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH TWO LIGHT EAU ú

 71-00-50
 WITH AND WITHOUT SYNC LOCKS  ú CONFIG 7 ú C01 Page 150 ú Jul 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
　
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