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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 AUXILIARY STRUCTURE - DESCRIPTION AND OPERATION
_______________________________________________
 1.  General_______
 A.  Auxiliary strut/pylon structure consists of the forward fairing, upper strut to wing fairing, lower strut to wing fairing, and nacelle strut access panels some of which serve as pressure relief doors.
 2.  Access Panels_____________
 A.  Access panels are located at various places on the strut for access to tubing, ducts and electrical wiring passing thru the nacelle strut to the engine. Some access panels serve as pressure relief doors to prevent structural damage in the event of an increase in internal pressure. All access panels are secured to structure with a lanyard.
 3.  Fairings________
 A.  Fairing panels are installed to aerodynamically smooth the nacelle strut to the wing. Fairings are removable for access to nacelle strut attach points.
 B.  Forward Fairing (Fig. 2).
 (1)  
The forward fairing is a stream-lined cowl, which fairs the forward bulkhead to the fan cowl support beam. Removal of the the forward fairing provides access to the front of the strut forward bulkhead and the forward electrical and fluid connections. The forward fairing also incorporates a pressure relief door.

 (2)  
The forward fairing is attached at its forward end and along the sides with fasteners. The aft end is secured by clips to allow for strut and fairing motion.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

Auxiliary Structure
Figure 1

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SEE A
FORWARD FAIRING
(28 LOCATIONS) (PHILLIPS HEAD) SCREW 
STRUT 
FWD
Figure 2 Forward Fairing Installation A 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 NACELLE STRUT ACCESS PANELS - REMOVAL/INSTALLATION
__________________________________________________
 1.  General_______
 A.  This procedures gives the instructions when you remove and install the access panels on the nacelle strut.
 TASK 54-31-01-004-001-B00
 2.  Nacelle Strut Access Panels Removal___________________________________
 A.  General
 (1)  You can use this procedure for all 8 access panels on the nacelle strut.
 B.  References
 (1)  AMM 78-31-00/201, Thrust Reverser
 C.  Access
 (1)  
Location Zones
 507 Right Nacelle Strut
 607 Left Nacelle Strut

 (2)  
Access Panels
 5726L/5826R Left Nacelle Access Door
 5725L/5825R Left Nacelle Access Door
 5724L/5824R Right Nacelle Access Door
 5731L/5831R Right Nacelle Access Door
 5727L/5827R Top Nacelle Access Door
 5728L/5828R Top Nacelle Access Door
 5729L/5829R Top Nacelle Access Door

 D.  Remove the Access Panels for the Nacelle Strut
 S 044-002-B00
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE THRUST REVERSER TO
_______ PREVENT THE OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  
　
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