71-00-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
Power Plant Removal - Bootstrap Method
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 TASK 71-00-02-004-032-C00
 3. Power Plant Removal - Bootstrap Method
______________________________________
 A. General
 CAUTION:  THE ENGINE MUST BE PRESERVED PER CHAPTER AMM 71-00-03/201 TO
_______
 PREVENT INTERNAL PARTS CORROSION OR FAILURES.

 (1)  
This procedure uses bootstrap equipment to remove the engine from the strut.

 (2)  
This task has two topics as follows:

 (a)  
Install the bootstrap equipment.

 (b)  
Remove the engine.

 (3)  
The power plant, when removed from the strut, weighs approximately 5340 pounds (2422 kg), engine cradle weight not included.

 (4)  
You must use dynamometers in the hoist configuration for applied forces.

 (a)  
If the loads between the airplane structure and the power plant structure are more than the specified limits during the engine removal or installation, do this step: 1) Make an inspection of the front and rear engine mount

 fittings for signs of damage (chipped finish, nicks, gouges, etc.) (AMM 71-21-00/601).
 (5)  
The lever hoists, which attach to the support arms of the bootstrap equipment, permit the power plant to turn in pitch and roll while it is hung.

 (6)  
The bootstrap equipment shown in the illustrations can be different from the bootstrap equipment you have. However, all the different bootstrap equipment is removed, installed, and operated in the same way.

 B.
Equipment

 (1)  
Thread Protectors - C71006

 (2)  
Bootstrap Equipment - C71003

 (3)  
Cradle - C71008
 AGSE International, Inc.,
 3270 East 70th Street,
 Long Beach, CA 90805, (P/N AM-1802); or

 Stanley Aviation, 2501 Dallas Street, Aurora, CO 80010, (P/N 110702)

 (4)  
Transportation Base - C71008,
 AGSE International, Inc., (P/N AM-1803)
 or Stanley Aviation, (P/N 110701)

 (5)  
Wrench, Aft Cone Bolt Nut - C71019-1

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
Power Plant Removal - Bootstrap Method
______________________________________
 (6)  Adapter Wrench, Aft Cone Bolt Nut - C71001 or C71014
 NOTE: Adapter Wrench C71001 is equipped with a
____ reversing ratchet feature and is suitable for run-on and tightening of aft cone bolt nut; adapter wrench C71014 is recommended for tightening only.
 C. References
 (1)  
AMM 08-11-00/201, Level Airplane

 (2)  
AMM 54-32-01/401, Forward Fairings

 (3)  
AMM 71-21-00/601, Engine Mounts

 D.
Access

 (1)  
Location Zones
 410 No. 1 Engine
 420 No. 2 Engine

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
Power Plant Removal - Bootstrap Method
______________________________________ Install the Bootstrap Equipment
 E. Install the Bootstrap Equipment
 S 864-033-C00
 (1)  
If not already done, do this procedure: Prepare the Airplane For the Removal of the Power Plant.

 S 024-034-C00

 (2)  
If not already removed from the strut, remove the screws (1) that attach the forward fairing (AMM 54-32-01/401).
　
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