747-400 AMM 飞机维护手册 EXHAUST 2(27)

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 (5)  Do not lift or move the thrust reverser halves unless a minimum of three cascade vane segments are installed. The three cascade vane segments must have equal distance between them on each thrust reverser half with no more than two adjacent open spaces.
 TASK 78-31-16-404-010-N00
 3. Install the Thrust Reverser Cascade Vane Segments
_________________________________________________
 A. Consumable Materials
 (1)  
C00259 Primer - Green, BMS 10-11 Type I Class A

 (2)  
C00308 Compound - Corrosion Preventive - MIL-C-11796, Class 3

 B.
References

 (1)  
AMM 27-62-00/201, Speed Brake Control System

 (2)  
AMM 78-31-00/201, Thrust Reverser System

 (3)  
AMM 78-31-00/501, Thrust Reverser System

 (4)  
AMM 78-31-17/401, Thrust Reverser Hydraulic Actuators

 (5)  
IPC 78-31-01 Fig. 5

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
C. Access
 (1)  
Location Zone
 415 and 416 Engine 1 - Thrust Reverser Halves
 425 and 426 Engine 2 - Thrust Reverser Halves
 435 and 436 Engine 3 - Thrust Reverser Halves
 445 and 446 Engine 4 - Thrust Reverser Halves

 D.
Install the Cascade Vane Segment (Fig. 401)

 S 114-011-N00
 (1)  Clean all sealant and parting agent from the mating flange of the flange of the cascade vane segment, torque box and aft mounting ring if they are there.
 NOTE:____Do not continue to use the sealant and parting agent. The sealant can decrease in size and cause the fasteners for the cascade vane segment to loosen.
 S 424-012-N00
 CAUTION: THE CASCADE VANE SEGMENTS MUST BE CORRECTLY INSTALLED AND
_______ ALIGNED ON THE THRUST REVERSER. IF THE CASCADE VANE SEGMENTS ARE NOT CORRECTLY INSTALLED AND ALIGNED, IT CAN CAUSE DAMAGE TO THE AIRPLANE.
 (2)  
Put the cascade vane segment into its position.

 S 424-033-N00

 (3)  
Install one or two threads of the bolts which attach the cascade vane segment.

 S 424-034-N00

 (4)  
For the cascade vane segment which is behind the locking or
 non-locking hydraulic actuator, do the steps that follow:

 (a)  
Put the cascade vane segment in the opening from the adjacent cascade vane segment.

 (b)  
Turn the hydraulic actuator out and move the cascade vane segment into the blocked position.

 (c)  
Install one or two threads of the bolts which attach the cascade vane segment.

 

 (5)  
Tighten the bolts at the aft mounting ring.

 S 434-013-N00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 424-035-N00
 (6)  Apply a 25-pound load across the cascade strongbacks, 5 inches to
 the rear of the torque box bolts.
 S 224-014-N00
 (7)  Measure the distance between the mating surface of the cascade vane
 segment and torque box.
 NOTE:____ The maximum distance is 0.030 inch.

 S 024-015-N00
 (8)  
Remove the cascade vane segment.

 S 374-016-N00

 (9)  
Apply the wet primer to the cascade mating surface of the torque box and aft mounting ring which includes the fastener holes.

 S 424-017-N00

 (10)
 Put the cascade vane segment into its position.

 S 624-018-N00

 (11)
 Apply the compound below the bolt heads and on the bolt shanks.

 NOTE: Do not apply the compound to the bolt threads.
____
 S 434-019-N00
 (12) Install all attach bolts.
 (a)  Tighten the attach bolts with your hand.
　
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