757
MAINTENANCE MANUAL

 S 864-029
 (14)
 Make sure the fluid in the hydraulic reservoir is at the correct level. Fill if it is necessary (AMM 12-12-01/301).

 S 414-030

 (15)
 Install the wing access panels 551BB-left (651BB-right), below the retract actuator, and 551CT-left (651CT-right), above the retract actuator (AMM 06-44-00/201).

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757 MAINTENANCE MANUAL
 MAIN GEAR RETRACT ACTUATOR - INSPECTION/CHECK
_____________________________________________
 1.  General
_______
 A.  This procedure only has illustrations and a wear limit table which show the data for wear limits. There are no procedures for access, removal, or installation of the parts. Refer to Main Gear Retract Actuator -Removal/Installation for procedures to do these tasks.
 TASK 32-32-01-206-001
 2.  Wear Limits for the Retract Actuator on the Main Landing Gear (Fig. 601)
_____________________________________________________________
 NOTE: Wear limits for the other components that are connected to the Retract
____
 Actuator are not in this procedure. They are included in the
 applicable Maintenance Manual subject for those components.

 A.  General
 (1)  This procedure only has illustrations and a wear limit table which show the data for wear limits. There are no procedures for access, removal, or installation of the parts. Refer to Main Gear Retract Actuator - Removal/Installation for procedures to do these tasks.
 

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757 
MAINTENANCE MANUAL 
B  RETRACT 
ACTUATOR 
A 
B 
A 
SHOCK  1. BUSHING/PIN  2. BEARING/PIN 
STRUT  RETRACT 
ACTUATOR  1. BUSHING/PIN 
INBD 
FWD 
SHOCK 
STRUT 
A-A 
1. BUSHING/ 
3. BUSHING/  PIN 
PIN 
RETRACT 
ACTUATOR 
ACTUATOR ATTACHMENT  PIN 1. BUSHING/ 
YOKE 
B-B 
Main Landing Gear Retract Actuator Wear Limits 
Figure 601 (Sheet 1) 

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757
MAINTENANCE MANUAL

NO. INDEX  PART NAME  DIM.  DESIGN LIMITS  WEAR LIMITS  WORN PART REPLACE  PART WORN REPAIR  INSTR REPAIR 
DIAMETER  PER-MITTED WEARDIM.  MAX ANCE CLEAR-DIAM 
MIN  MAX 
1  BUSHING ID  2.0000  2.0010  2.0048  0.0058  X 
PIN  OD  1.9980  1.9990  1.9952  X  1 
2 BEARING  ID  2.0000  2.0005  2.0043  0.0053 X 
PIN  OD  1.9980  1.9990  1.9952  X  1 
3 BUSHING  ID  2.0020  2.0040  2.0070  0.0080 X 
PIN  OD  1.9980  1.9990  1.9952  X  1 

YOU CAN REPAIR THE PART; REFER TO THE COMPONENT MAINTENANCE MANUAL FOR THE INSTRUCTIONS
Main Landing Gear Retract Actuator Wear Limits
Figure 601 (Sheet 2)

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757 MAINTENANCE MANUAL
 MAIN GEAR DOWNLOCK ACTUATOR - REMOVAL/INSTALLATION
__________________________________________________
 1.  General_______
 A.  This procedure provides two tasks . The first task removes the main gear downlock actuator. The second task installs the main gear downlock actuator.
 TASK 32-32-02-004-001
 2.  Remove the Main Gear Downlock Actuator (Fig.______________________________________401)
 A.  References
 (1)  
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System

 (2)  
AMM 32-00-20/201, Landing Gear Downlocks

 B.  
Consumable Materials

 (1)  
D00153 Hydraulic Fluid - Fire resistant,
 BMS 3-11

 (2)  
D00633 Grease - BMS3-33 (Preferred)

 (3)  
D00013 Grease - MIL-G-23827 (Alternative)

 (4)  
D00054 Lubricant, Hydraulic Systems - MCS-352

 C.  
Access
　
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