S 494-223-C00

 (3)
Install the forward bootstrap equipment as follows (Fig. 411):

 (a)  
If not already installed, use four ball lock pins to install the two attach fittings to the forward bootstrap attach points on the strut.

 (b)  
Use two ball lock pins to attach the center arm to the two attach fittings.

 (c)  
Attach the inboard arm to the center arm at the top ball lock pin location.

 (d)  
Attach the outboard arm to the center arm at the top ball lock pin location.

 (e)  
Make sure the ball lock pins and inboard, outboard, and center arms are correctly installed.

 (f)  
Attach a dynamometer and a lever hoist to each arm.

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE C
SEEA B
FORWARD FAIRING
(28 LOCATIONS) 1. SCREW  ON EACH SIDE) (2 LOCATIONS ATTACH POINTS BOOTSTRAP FORWARD 
STRUT 
FWD  SEE  B 
A 
Forward Bootstrap Installation Figure 411 (Sheet 1) 

C78251
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A
737-300/400/500MAINTENANCE MANUAL
BALL LOCK PIN (4 LOCATIONS)
CENTER ARM
OUTBOARD ARM
FWD
BALL LOCK PIN(2 LOCATIONS ON EACH SIDE)
B
Forward Bootstrap Installation Figure 411 (Sheet 2)
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CFM56 ENGINES
/ / ////////////////////////
INBOARD ARM
ATTACH FITTING (2 LOCATIONS)
STRUT
C78253
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
BALL LOCK PIN (4 LOCATIONS)
SHACKLES
DYNAMOMETER
SHACKLE
LEVER HOIST
SHACKLE
C
NOTE: OUTBOARD INSTALLATION SHOWN. INBOARD INSTALLATION IS EQUIVALENT.
Forward Bootstrap Installation Figure 411 (Sheet 3)
C78262
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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
______________________________________ Install the Bootstrap Equipment
 S 494-036-C00
 (4)  
Install the aft bootstrap equipment (Fig. 412).

 (a)  
Remove the three bolts (1) from the left and right aft strut bulkhead to get access to the aft bootstrap attach points. 1) Keep the bolts for the installation procedure.

 (b)  
Use the attached bolts and washers to install the left and right arms to the aft bootstrap attach points.

 (c)  
AIRPLANES POST SB 54-1032; If a doubler is installed at the forward attach point of the outboard aft bootstrap, do these steps to install shims at the two aft attach points: 1) Make the shims (Fig. 412, Sheet 3). 2) Drill a 0.38 inch hole in the shim to match the holes in

 the strut under the aft bootstrap. 3) Trim the shims so they lay flat on the strut skin and on the bootstrap. 4) Install the shim at each aft attach point of the outboard aft bootstrap.
　
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