747-400 AMM 飞机维护手册 EXHAUST 2(20)

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_______ DRAG LINKS. IF YOU DO, YOUR WEIGHT CAN CAUSE THE FAILURE OF THE HOLD-OPEN ROD WHEN YOU GO INTO THE FAN COWL. THE THRUST REVERSER HALVES WILL FALL TO THE CLOSED POSITION QUICKLY, WHICH CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  Go into the aft end of the fan cowl to get access to the drag links.
 NOTE: Be careful when you get access to the drag links at the top
____ of the thrust reverser. Push on the opposite sides of the inner walls of the fan cowl with your hands and feet while you lift your body up. Do not pull on the drag links or you will cause damage to them.
 S 034-039-N00
 (2)  Disconnect the drag link (9) from the anchor fitting on the fan cowl.
 WARNING:_______HOLD THE BLOCKER DOOR WHEN YOU REMOVE THE PIN. WHEN YOU REMOVE THE PIN, THE BLOCKER DOOR IS FREE TO TURN ON ITS HINGES AND CAUSE INJURY TO YOU AND DAMAGE TO THE FAN COWL.
 (a)  ON THE ANCHOR FITTINGS WITHOUT THE ANTI-ROTATION CLIP; remove the screw (3), washer (2) and pin (1).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
SEE  A 
SEE  B 
9. DRAG LINK  9. DRAG LINK 
11. BUSHING 
10. WASHER 
2. WASHER  12. ANTI-ROTATION 
15. COTTER  CLIP 
1. PIN  PIN 
13. BOLT 
3. SCREW  14. NUT 

DRAG LINK ANCHOR FITTING DRAG LINK ANCHOR FITTING WITHOUT ANTI-ROTATION CLIP WITH ANTI-ROTATION CLIP
A A
Blocker Door Drag Link Installation Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
BLOCKER DOOR (12 LOCATIONS)
9. DRAG LINK
SEE C
LOOKING FORWARD, DOOR OPEN
B
16. BUSHING 9. DRAG LINK 7. WASHER 9. DRAG LINK 6. BUSHING 7. WASHER
5. WASHER
5. WASHER
8. BOLT
17. BOLT 4. NUT
4. NUT
16. BUSHING
6. BUSHING
PIVOT LINK (REF)
WITH SINGLE-LUG PIVOT LINK WITH DOUBLE-LUG PIVOT LINK
C
Blocker Door Drag Link Installation
Figure 401 (Sheet 2)

C58665
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
WARNING:_______HOLD THE BLOCKER DOOR WHEN YOU REMOVE THE BUSHING. WHEN YOU REMOVE THE BUSHING, THE BLOCKER DOOR IS FREE TO TRUN ON ITS HINGES AND CAUSE INJURY TO YOU AND DAMAGE TO THE FAN COWL.
 (b)  ON THE BLOCKER DOORS WITH THE ANTI-ROTATION CLIP; remove the cotter pin (15), nut (14), washer (10), bolt (13) and bushing (11).
 S 034-007-N00
 (3)  Disconnect the drag link (9) from the pivot link on the blocker door.
 (a)  
Open the blocker door.

 (b)  
ON BLOCKER DOORS WITH A SINGLE-LUG PIVOT LINK; remove the nut (4), the washers (5, 7), the bolt (17) and the bushings (16).

 (c)  
ON BLOCKER DOORS WITH A DOUBLE-LUG PIVOT LINK; remove the nut (4), the washers (5, 7), the bolt (8), and the bushings (6).

 S 024-040-N00
 (4)  Remove the drag link (9).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TASK 78-31-15-404-009-N00
　
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