(10)
IPC 79-22-00 Fig. 1
(11)
IPC 79-22-00 Fig. 5
B.
Access
(1)
Location Zones
412 Engine 1
422 Engine 2
432 Engine 3
442 Engine 4
(2)
Access Panels 415 and 416 Thrust Reverser Halves - Engine 1 425 and 426 Thrust Reverser Halves - Engine 2 435 and 436 Thrust Reverser Halves - Engine 3 445 and 446 Thrust Reverser Halves - Engine 4
C.
Prepare to Examine the Oil System Tubes
(1)
Open the fan cowl panels (Ref 71-11-04/201).
S 016-008-N00
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 046-010-N00
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
S 016-009-N00
(3)
Open the core cowl panels (AMM 71-11-06/201).
S 016-011-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(4)
Open the thrust reversers (AMM 78-31-00/201).
S 216-047-N00
(5)
Do the Inspection of the Oil System Tubes
(a)
Visually examine the external oil system tubes for damage. See Table 601.
NOTE: It is not necessary to remove the tube to do the
____ inspection to make sure the tube condition is satisfactory. Oil system tube dents are permitted for continued service if, visually, the tube OD is seen to not be decreased by more than 20 percent at any one location. The Inspection Reference Table that follows is to help you identify specified areas and conditions whenever maintenance time permits inspection. Tube inspection should not be done only on the basis of this table. Table 601 does not imply that items or conditions listed are all-inclusive. Experience and judgement will continue to be an important part of any inspection program.
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~............................................................................... | Table 601 - Inspection Reference Table | | Continue In Service Limits For The Oil System Tubes | .................................................................................
| | | CONTINUE |
| ITEM | INSPECT FOR | IN SERVICE |
| | | LIMITS |
................................................................................. | Oil System | Cracks | None Permitted | | Tubes | | | ................................................................................. | | Corrosion and Stains | Permitted if it can | | | | be removed by light | | | | polishing with | | | | crocus cloth | ................................................................................. | | Loose Tube Nuts | None Permitted | ................................................................................. | | Loose or Broken | None Permitted | | | Lockwire | | ................................................................................. | | Nicks, Scratches, | 0.003 inch (0.076mm) | | | Chafing and Pitting | maximum depth permitted| | | | in all locations | ................................................................................. | | Dents (without sharp | Permitted if the tubing| | | edges or corners) | OD is not decreased by | | | | more than 20 percent at| | | | each location. No dents| | | | permitted within 0.25 | | | | inch (6.25 mm) or less | | | | from the tube ferrule. | ................................................................................. | | Dents (with sharp | None Permitted | | | edges or corners) | | 2.......................….........................….............................1 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 滑油 OIL(8)
