(1)
Location Zone
412 Engine 1 - Intermediate Case
422 Engine 2 - Intermediate Case
432 Engine 3 - Intermediate Case
442 Engine 4 - Intermediate Case
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(2)
Access Panel
415 Left Thrust Reverser Half - Engine 1
416 Right Thrust Reverser Half - Engine 1
425 Left Thrust Reverser Half - Engine 2
426 Right Thrust Reverser Half - Engine 2
435 Left Thrust Reverser Half - Engine 3
436 Right Thrust Reverser Half - Engine 3
445 Left Thrust Reverser Half - Engine 4
446 Right Thrust Reverser Half - Engine 4
E.
Prepare to Install the Fan Exit Liner Segments.
S 974-042-N00
(1) To install a liner segment, you must first calculate the number and thickness of washers that you will use for the installation (Fig. 403).
NOTE: These washers are necessary to make a 0.005-0.020 inch
____ (0.127-0.508 mm) clearance between the bracket and the liner.
(a)
With some moisture resistant tape, attach a 0.020 inch (0.508 mm) shim to the outer diameter of the attachment bracket.
(b)
Put the liner segment between the struts and temporarily attach it with screws/bolts.
NOTE: ENGINES PRE-PW-SB 72-107 use screws, and ENGINES
____ POST-PW-SB 72-107 use bolts.
(c) Measure the dimension "A" with a depth micrometer through each of the two forward holes in the liner segment.
NOTE: The dimension "A" is the depth from the top surface of
____ the liner segment to the surface of the shim.
(d)
Remove the screws/bolts.
(e)
Remove the liner segment and the shim.
(f)
Measure the dimension "B", the thickness of the liner segment.
(g)
Subtract "B" from "A" to calculate the thickness of the necessary washers.
(h)
Use Table I to find which washers (0-3) to use to make the necessary thickness.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
~................................................
| Washer, Flat - Thickness |
| Table I |
..................................................
| Class | Washer Thickness - Inch (mm) |
..................................................
| 1 | 0.009-0.011 (0.229-0.279) |
..................................................
| 2 | 0.019-0.021 (0.483-0.503) |
..................................................
| 3 | 0.029-0.031 (0.737-0.787) |
..................................................
| 4 | 0.039-0.041 (0.991-1.041) |
..................................................
| 5 | 0.049-0.051 (1.244-1.295) |
..................................................
| 6 | 0.099-0.101 (2.514-2.565) |
2.........…......................................1
S 244-043-N00
(2) Do these steps to attach the washers in the correct position to the bracket.
WARNING: DO NOT GET THE SOLVENT IN YOUR MOUTH OR EYES, OR ON YOUR
_______ SKIN. DO NOT BREATHE THE FUMES FROM THE SOLVENT. PUT ON PROTECTIVE SPLASH GOGGLES AND GLOVES WHEN YOU USE THE SOLVENT. KEEP THE SOLVENT AWAY FROM SPARKS, FLAMES, AND HEAT. THE SOLVENT IS POISONOUS AND FLAMMABLE AND CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(a)
With some cheesecloth that is wet with trichlorotriflouroethane solvent, clean the areas where you will attach the washers.
(b)
Let the surfaces become fully dry at ambient temperature.
NOTE:____This will remove all remaining solvent. Remaining solvent can cause a bad seal. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 发动机 ENGINE 2(51)
