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(e) Install protective caps to the cooling air tubes.
S 024-044-N00
(2) If necessary, do the steps that follow to remove the assembly that holds the buffer air cooler:
(a)
Remove the bolt that holds the mount bracket of the outer rod end. 1) Remove the mount bracket.
(b)
Loosen the outer jamnut, and remove the outer rod end bearing from the strut. 1) Remove the jamnut from the outer rod end bearing.
(c)
Loosen the inner jamnut, and remove the strut and the jamnut. 1) Remove the jamnut from the inner rod end bearing.
(d)
Remove the bolt and nut that hold the inner rod end bearing to the mount bracket on the intermediate case. 1) Remove the inner rod end bearing from the mount bracket.
S 024-046-N00
(3) Remove the two supports along the axial edges of the buffer air cooler with the steps that follow:
(a)
Remove the bolts and nuts that attach the two supports along the axial edges of the buffer air cooler.
(b)
Remove the two supports.
S 144-026-N00
(4) Remove all remaining sealant from the intermediate case and the buffer air cooler.
TASK 75-22-01-404-009-N00
3. No. 3 Bearing Buffer Air Cooler Installation (Fig. 401)
____________________________________________
A. Equipment
(1)
M303, M305, or M307 Bergen Mechanical Crimper
Bergen Cable Technologies Inc
170 Gregg St
P.O. Box 1300
Lodi, NJ 07644-9982
B.
Consumable Materials
(1)
A01043 Sealant, Silicone Rubber - PWA 36003
(2)
B00379 Alcohol, Isopropyl
(3)
D00390 Oil - Engine
(4)
G00964 Compound - Antigalling, Fel-Pro C-200
(5)
G02334 Lockwire - AS3214-02
(6)
G02332 Ferrule - P05-292 (Optional)
(7)
G02335 Cable - Safety - P05-291 (Optional)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
C. References
(1)
AMM 71-11-04/201, Fan Cowl Panels
(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
AMM 78-31-00/201, Thrust Reverser System
(4)
IPC 72-34-03 Fig. 5
D.
Access
(1)
Location Zone 412 Engine 1 - Intermediate Case 2 o'clock 422 Engine 2 - Intermediate Case 2 o'clock 432 Engine 3 - Intermediate Case 2 o'clock 442 Engine 4 - Intermediate Case 2 o'clock
(2)
Access Panel 416 Right Thrust Reverser Half - Engine 1 426 Right Thrust Reverser Half - Engine 2 436 Right Thrust Reverser Half - Engine 3 446 Right Thrust Reverser Half - Engine 4
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E. Prepare to Install the Buffer Air Cooler for the No.3 Bearing
S 224-031-N00
(1) Examine the items that follow to see if the clearances are in the limits shown in the table below:
(a)
The outer diameter of the bolt and the inner diameter of the mounting bracket of the rod end bearing.
(b)
The outer diameter of the bolt and the inner diameter of the rod end bearing.
(c)
The thickness (TH) of the rod end bearing and the inner diameter of the mount bracket of the rod end bearing.
~............................................................. | | | NEW PART REFERENCE | CLEARANCE | | | | DIMENSIONS | LIMITS | | PART | | INCHES | INCHES | | NAME | DIA | (MM) | (MM) *[1] | | | ............................................... | | | MIN | MAX | MIN | MAX | ............................................................... | BOLT | OD | 0.2494 | 0.2499 | | | | | | (6.3348) | (6.3474) | 0.0001 | 0.0016 | ......................................... (0.003) | (0.040) | | BRACKET | ID | 0.2500 | 0.2510 | | | | | | (6.350) | (6.375) | | | ............................................................... | BOLT | OD | 0.2494 | 0.2499 | | | | | | (6.3348) | (6.3474) | 0.0006 | 0.004T | ......................................... (0.0152) | (0.0102T)| | ROD END | ID | 0.2495 | 0.2500 | | | | BEARING | | (6.3373) | (6.3500) | | | ............................................................... | ROD END | TH | 0.432 | 0.437 | | | | BEARING | | (10.973) | (11.099) | 0.0005 | 0.0075 | ......................................... (0.013) | (0.190) | | BRACKET | ID | 0.4375 | 0.4395 | | | | | | (11.113) | (11.163) | | | 2.........….....…...........…...........…..........…..........1 *[1] The letter "T" shows a tight fit.
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本文链接地址：747-400 AMM 飞机维护手册 大气 AIR 1(11)
