757 AMM 飞机维护手册 EQUIPMENT/FURNISHINGS 1(58)

 S 024-019
 WARNING: OBEY THE REMOVAL PROCEDURE FOR THE GAS SPRING ASSEMBLY.
_______ PRELOADED CABLE TENSION IN THE CEILING DOOR MECHANISM CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  Remove the pins that attach the cables to the cable support structure.
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757
MAINTENANCE MANUAL

PLUNGER BLOCKING TOOL HANDLE TOOL BOEING NO. MIT 411N3201-1 BOEING NO. MIT 411N3201-1 S/N 3000148 UNIT 1000 PARTS 15 AND 16 S/N 3000148 UNIT 0001 PARTS 5 ND 12 MATERIAL: PHENOLIC MATERIAL: 6160-T651 ALUMINUM
Tool Reference Drawings
Figure 401

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 S 014-014
 (3)  
Lower the door panel and secure it in a lowered position so that it cannot move.

 S 424-004

 (4)  
Install the handle tool at the end of the cable.

 NOTE: Reference Boeing Tool No.
____
 MIT 411n3201-1 S/N 300148
 UNIT 0001 PART 5&12

 S 024-005
 (5)  Remove the Blocking devices by pulling back on the Handle Tool until you compress the spring.
 NOTE: Significant strength will be necessary to pull the spring
____ back. Make sure you have a person to assist you when you remove the blocking device.
 S 024-015
 (6)  
When the Blocking Tool is clear slowly release the tension on the cable until the Gas Spring is fully extended and the cable is slack. Follow this process on both sides if required.

 S 024-008

 (7)  
Remove the Gas Spring Assembly and retain the bracketry for reinstallation.

 TASK 25-22-03-424-006
 3. Gas Spring Installation (Fig. 401)
__________________________________
 A. Equipment
 (1)  
Plunger Blocking Tools
 MIT411N3201-1 S/N 3000148
 UNIT 0001
 PT 15 and PT 16

 (2)  
Handle Tool
 MIT 411N3201-1 S/N 3000148
 UNIT 0001
 PT 5 and PT 12

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757 MAINTENANCE MANUAL
 B. Procedure
 S 424-007
 (1)  Install Gas Spring Assembly into the frame using retained bracketry checking that the cables are properly positioned in the pulleys.
 NOTE: If cables are not properly located on the pulleys
____
 damage could occur under load.

 S 424-020
 WARNING: OBEY THE INSTALLATION PROCEDURE FOR THE GAS SPRING ASSEMBLY.
_______ PRELOADED CABLE TENSION IN THE CEILING DOOR MECHANISM CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  
Secure the door so that it cannot move and install the Handle Tool into the cable.

 S 864-016

 (3)  
Manually pull on the handle until the cable compresses the plunger enough to insert the Plunger Blocking Tool.

 S 864-017

 (4)  
Release the pressure until the blocking tool takes the load.

 NOTE: Reference Boeing Tool No.
____
 MIT 411N3201-1 S/N 3000148
 UNIT 0001 (PARTS 5&12 and 15&16)

 S 024-010
 (5)  
Remove the Handle Tool from the cable.

 (6)
Connect the ends of the cables to the ceiling support structure.

 S 424-012