737 AMM 飞机维护手册 起落架 LANDING GEAR(53)

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3.  Outer Door
A.  The outer door is a composite bonded assembly or is machined from an aluminum casting. Two hinge fittings are bolted between webs on the inner side. On airplanes with aluminum doors, an airplane grounding terminal is located on the forward flange near the edge of door. The door hinges pivot on the heads of two eyebolts, used to connect the ends of a smal1 stabilizing beam, located between the landing gear beam and the rear wing spar. A bulb section rubber seal around the door opening in the wing provides an air-tight joint when the door is closed. A pushrod connects the door to a bracket on the underside of the trunnion link. Trunnion link rotation during extension and retraction operates the door.
4.  Inner Door
A.  On airplanes with metal doors, the inner door is built up from a frame, ribs and a honeycomb core. A hinge half on the outer edge picks up on the center door. The door is contoured to fair with the body when closed. A light fairing is attached to the outer skin to line up with the flap track fairing. A deep flange on the inner edge carries a portion of fairing to close the gap between wheel and door when the gear is retracted. The flange is braced by three struts running from the upper edge of the flange to a point opposite the flap track fairing support stringer. A pushrod connects the door to the universal side strut attachment.
B.  On airplanes with composite doors, the inner door is a composite bonded assembly. A hinge half on the outer edge picks up on the center door. The door is contoured to fair with the body when closed. A light fairing is attached to the outer skin to line up with the flap track fairing. The inner edge carries a portion of fairing to close the gap between wheel and door when the gear is retracted.
501 
Jun 20/86  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  32-13-0 Page 1 

Main Gear Shock Strut Doors  535 
32-13-0Page 2   Figure 1 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Jun 20/86 

MAIN GEAR SHOCK STRUT DOORS - REMOVAL/INSTALLATION
1.  General
A.  The shock strut doors consist of a center door and an inner door joined by hinges.
B.  The shock strut doors may be removed and installed as an assembly or the inner door may be removed and installed separately. To remove the center door it is necessary to remove the inner door as well.
2.  Equipment and Materials
A.  Ground Lock Assemblies (Ref 32-00-01)
B.  Hydraulic test bench capable of delivering 20 gpm at 3000 psi
C.  Grease - BMS 3-24
D.  Paint - BMS 10-60, Type 1, BAC701, Color: Black
3.  Shock Strut Door Assembly - Removal/Installation
A.  Remove Shock Strut Door Assembly
(1)  
Check that ground lock assemblies (Ref 32-00-01) are installed in all gear.

(2)  
Disconnect inner door control rod assembly (7, Fig. 401) by removing attachment bolts.

(3)  
Disconnect upper (3) and lower (5) drag strut door supports by removing attachment bolts.

(4)  
Support strut door assembly and remove mounting screws from upper (10) and lower (8) shock strut door supports. Note position and number of shims.

(5)  
Remove door assembly from airplane.

B.  Install Shock Strut Door Assembly
(1)  
Position door in place on landing gear strut (Fig. 401).

(2)  
Install shims and mounting screws in upper (10) and lower (8) shock strut door supports.

(3)  
Connect upper (3) and lower (5) drag strut door supports.

(4)  
Disconnect outboard wing door control rod.

(5)  
Jack airplane until all tires are clear of ground (Ref Chapter 7, Jacking Airplane).

(6)  
Check that electrical power is available.

515 
Oct 20/92  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  32-13-11 Page 401 

Main Gear Shock Strut Door Installation  507 
32-13-11 Page 402  Figure 401 (Sheet 1) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Jun 20/85 

500 Main Gear Shock Door Installation Oct 20/92 Figure 401 (Sheet 2A) 32-13-11 Page 402A/402B BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

500  Main Gear Shock Strut Door Installation 
Feb 15/68  Figure 401 (Sheet 2) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  32-13-11 Page 403 

(7)
Connect external hydraulic test bench. Do not pressurize hydraulic system A.

(8)
Remove ground lock assemblies (Ref 32-00-01) on landing gear being repaired.
　
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