757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 2(62)

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MIN  MAX 
1 BUSHING  ID  0.7500  0.7510  0.7537  0.0047  X 
PIN  OD  0.7480  0.7490  0.7463  X 
2 BEARING  ID  0.7495  0.7500  0.7527  0.0037 X 
PIN  OD  0.7480  0.7490  0.7463  X 
3 ACTUATOR ROD END  0.7500  0.7505  0.7540  0.0040 1 2 
4 BUSHING  ID  0.8750  0.8760  0.8789  0.0049 X 
PIN  OD  0.8730  0.8740  0.8711  X 
5 BEARING  ID  0.8745  0.8750  0.8779  0.0039 X 
PIN  OD  0.8730  0.8740  0.8711  X 
6  ACTUATOR HEAD END  0.9660  0.9710  0.9970  0.0260 1 2

MAXIMUM PERMITTED PLAY SIDE-TO-SIDE. REPLACE THE WORN BUSHINGS.
Main Landing Gear Truck Positioner Actuator Wear Limits
Figure 601 (Sheet 2)

 

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757 MAINTENANCE MANUAL
 MAIN GEAR UPLOCK ASSEMBLY - REMOVAL/INSTALLATION
________________________________________________
 1.  General_______
 A.  This procedure has two tasks. The first task is for removal of the uplock assembly for the main landing gear. The other task is for installation of the uplock assembly.
 TASK 32-32-16-004-001
 2.  Remove the Uplock Assembly for the Main Landing Gear____________________________________________________
 A.  References
 (1)  
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System

 (2)  
AMM 32-00-15/201, Landing Gear Door Locks

 (3)  
AMM 32-00-20/201, Landing Gear Downlocks

 (4)  
AMM 32-32-16/401, Main Gear Uplock-Operated Sequence Valve

 (5)  
AMM 32-61-02/201, Main Gear Proximity Sensors

 B.  
Access

 (1)  
Location Zones
 143 MLG Wheel Well (Left)
 144 MLG Wheel Well (Right)

 C.  
Prepare for Removal

 S 214-002
 (1)  Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
 S 494-003
 WARNING:_______OBEY THE INSTALLATION PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).

 S 864-036

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

 D.  
Remove the Uplock Assembly

 (1)  
Remove the uplock springs.

 S 034-005

 (2)  
Remove the bolt to disconnect the rod end of the alternate uplock release actuator from the uplock assembly (Detail A).

 S 034-006

 (3)  
Remove the nut to disconnect the head end of the alternate actuator from the uplock assembly (View D-D). Move the actuator out of the way and attach it there.

 S 034-004
 

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MAINTENANCE MANUAL

D
SEE A
C
UP-AND-LOCKED SENSOR BOLT
C
(LEFT INSTALLATION HEAD AFT)
(RIGHT INSTALLATION HEAD FORWARD)
D
NUT
ACTUATOR
ALTERNATE UPLOCK
RETENTION
RELEASE ACTUATOR
WASHER
UPLOCK
INBD ASSEMBLY
FRONT VIEW
UPLOCK
ACTUATOR
LINK
SHOULDER BOLT

(LEFT INSTALLATION
A A
HEAD FORWARD) (RIGHT INSTALLATION
B
B HEAD AFT)
UP-AND-LOCKED SENSOR
ROD
UPLOCK
ASSEMBLY

INBD
REAR VIEW
(LEFT UPLOCK ASSEMBLY SHOWN) A
Main Landing Gear Uplock Assembly Installation Figure 401 (Sheet 1)

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757
MAINTENANCE MANUAL

BOLT
(LEFT INSTALLATION HEAD AFT)
(RIGHT INSTALLATIONHEAD FORWARD)

CONTROL ROD RETENTION NUT WASHER
WASHER (3 LOCATIONS)
ROD
ROD
UPLOCK

CRANK
A-A  B-B
UPLOCK ATTACH

ASSEMBLY
C-C
Main Landing Gear Uplock Assembly Installation
Figure 401 (Sheet 2)

 

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