EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú C01.1 Page 903 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
ú (e) For engine No. 2, remove the DO-NOT-CLOSE tag and close this ú circuit breaker: ú 1) P6-2 Load Control Center ú a) ENG 2 SYNC LOCK ú b) ENG 2 SYNC LOCK-ALTN ú (f) Slowly move the No. 1 or 2 reverse thrust lever up and aft to ú the extended position to unlock the sync lock. ú ú
CAUTION:_______DO NOT USE AN EXTENSION BAR OR OTHER TOOLS TO MOVE THE ú UNLOCK HANDLE. IF YOU USE AN EXTENTION BAR OR OTHER ú TOOLS, DAMAGE TO THE UNLOCK HANDLE OR ACTUATOR CAN OCCUR. ú ú (g) Move the manual unlock handle forward. ú ú
NOTE:____The sleeve will move out of the stowed position. ú ú (h) Slowly move the No. 1 or 2 reverse thrust lever down and ú forward to the extended position to unlock the sync lock. ú ú
NOTE:____Wait two minutes for the sync lock to lock after the ú lever is in the retracted position. ú ú (i) Engage a werench in the manual drive of the sync lock. ú ú
NOTE:____You can use a pneumatic ratchet wrench with a 3/8-inch ú square drive or a speed wrench. ú ú ú
CAUTION:_______MAKE SURE THAT THE SQUARE DRIVE FULLY ENGAGES THE SYNC ú LOCK BEFORE YOU TRY TO EXTEND THE THRUST REVERSER. DO NOT ú USE FORCE TO ENGAGE THE SYNC LOCK SQUARE DRIVE. MAKE SURE ú THAT THE MANUAL DRIVE STAYS FULLY ENGAGED WHILE YOU ú OPERATE THE SQUARE DRIVE. IF YOU TRY TO EXTEND THE THRUST ú REVERSER WITH THE SYNC LOCK PARTIALLY TO ENGAGED OR TRY TO ú FORCE THE SQUARE DRIVE TO ENGAGE, YOU WILL DAMAGE THE SYNC ú LOCK. ú
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
78-00-00
ALL ú ú C01.1 Page 904 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
ú (j) Do these steps to engage the manual drive:
ú 1) Put a 5/8-inch open end wrench on the manual drive nut.
ú 2) Push the 3/8-inch square drive in and gently turn the
ú 5/8-inch wrench a small amount in one direction or the
ú other to fully engage the manual drive.
ú 3) Hold the 3/8-inch square drive in when you turn the manual
ú drive.
ú (k) For the sleeve on the left side of the engine, turn the wrench
ú clockwise (viewed from above).
ú (l) For the sleeve on the right side of the engine, turn the wrench
ú counterclockwise (viewed from above).
ú (m) Extend the sleeve 0.20-0.60 inch (5.0-15.0 mm) aft of the fully
ú retracted position.
ú (n) Remove the wrench from the manual drive.
S 049-007-C00
(5) Deactivate the thrust reverser for flight dispatch (Fig. 901).
(a) Use a wrench with a 3/8-inch square drive to remove the sleeve
plug from the translating sleeve.
(b) Remove the access panel from the sleeve.
(c) AIRPLANES BEFORE LINE NUMBER 1535;
Get the deactivation turnbuckle, deactivation and indicator
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