PIN BUSHING  OD ID  1.8115 1.4355  1.8125 1.4365  1.8170 1.4325  X X 

PIN  OD  1.8085  1.8095  1.8055  X 

THE PART IS REPAIRABLE; REFER TO THE COMPONENT MAINTENANCE MANUAL FOR THE REPAIR INSTRUCTIONS
Main Landing Gear Downlock Assembly Wear Limits
Figure 601 (Sheet 2)

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757 MAINTENANCE MANUAL
 MAIN GEAR DOWNLOCK SPINDLE - REMOVAL/INSTALLATION
_________________________________________________
 1.  General
_______
 A.  This procedure contains two tasks. The first task removes the downlock spindle on the main landing gear. The second task installs the downlock spindle on the main landing gear.
 TASK 32-11-15-004-001
 2.  Remove the Downlock Spindle for the Main Landing Gear (Fig. 401)
_____________________________________________________
 A.  Equipment
 (1)  
Door Lock, Landing Gear - (AMM 32-00-15/201)

 B.  
References

 (1)  
AMM 07-11-01/201, Jacking Airplane

 (2)  
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System

 (3)  
AMM 32-00-15/201, Landing Gear Door Locks

 (4)  
AMM 32-00-20/201, Landing Gear Downlocks

 C.  
Access

 (1)  
Location Zones
 731/741 Main Landing Gear (MLG)
 732/742 MLG Body Doors
 733/743 MLG Oleo Doors

 D.  
Prepare for the Removal of the Downlock Spindle

 S 494-002
 (1)  Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
 S 494-016
 WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO INSTALL THE DOOR
_______ LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).

 S 864-004

 (3)  
Remove the pressure from the left hydraulic system and reservoir (AMM 29-11-00/201).

 (4)  
Lift the airplane (AMM 07-11-01/201).

 S 584-005
 

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A

757
MAINTENANCE MANUAL

A
A
UPPER BOLT
DOWNLOCK ASSEMBLY
UPPER SIDE STRUT
LOWER SIDE
STRUT
SHOCK
STRUT

INBD
0.003-0.005 INCH CLEARANCE  UPPER SUPPORT  BOLT (2 LOCATIONS) ANTIROTATION NUT BRACKET 
BOLT ANTIROTATION 
DOWNLOCK ACTUATOR 
NUT  DOWNLOCK SPINDLE 
WASHER SPLINED  A-A  CLEVIS PIN 

Main Gear Downlock Spindle Installation
Figure 401

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757 MAINTENANCE MANUAL
 E. Remove the Downlock Spindle.
 S 844-006
 (1)  
Hold the downlock assembly to prevent movement.

 S 014-007

 (2)  
Remove the clevis pin to disconnect the head end of the downlock actuator from the upper downlock link (View A-A).

 S 014-008

 (3)  
Remove the upper bolt to disconnect the upper downlock link from the downlock spindle. Tie the upper link and the actuator out of the area.

 S 014-009

 (4)  
Remove the bolts to disconnect the antirotation bracket from the downlock spindle (View A-A).

 S 014-010

 (5)  
　
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本文鏈接地址：757 AMM 飛機維護手冊 起落架 CHAPTER 32 - LANDING GEAR 1(107)