(2)
This test also pressurizes different systems at idle power to permit a full leak check of the components which were replaced.
B.
References
(1)
AMM 71-00-00/201, Power Plant
(2)
AMM 71-11-04/201, Fan Cowl Panels
(3)
AMM 71-11-06/201, Core Cowl Panels
(4)
AMM 78-31-00/201, Thrust Reverser System
C.
Access
(1)
Location Zones
221, 222 Control Cabin
412 Engine 1
422 Engine 2
432 Engine 3
442 Engine 4
(2)
Access Panels
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
D.
Procedure
S 865-220-N00
WARNING:_______USE AMM 71-00-00/201 TO OPERATE THE POWER PLANT. IF YOU DO NOT USE THIS PROCEDURE, YOU CAN CAUSE DAMAGE TO EQUIPMENT OR INJURY TO PERSONS.
(1) Use the Power Plant Operation (Normal) procedure to start the engine (AMM 71-00-00/201).
(a)
Let the N2 rpm become stable at minimum idle for 5 minutes.
(b)
Make sure the indications during the operation are in the operation limits.
(c)
Make a record of N1, N2, EGT, oil pressure, and oil temperature after the engine gets to the above operation conditions.
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71-00-00
ALL ú ú N02 Page 521 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TEST NO. 3 - GROUND TEST - IDLE POWER
_____________________________________
S 865-050-N00
(2)
Use the Power Plant (Normal) procedure to do the engine shutdown (AMM 71-00-00/201).
S 015-129-N00
(3)
If it is not done, open the thrust reverser with the steps that follow:
(a) Open the fan cowl panel (AMM 71-11-04/201).
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.
(b)
Do this procedure: Thrust Reverser Deactivation for Ground
Maintenance (AMM 78-31-00/201).
(c)
Open the core cowl panel (AMM 71-11-06/201).
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN
_______ THE THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(d) Open the thrust reverser (AMM 78-31-00/201).
S 795-051-N00
(4) Examine the component or system of the test for leaks.
NOTE: If an engine turns at speeds below idle, a small quantity of
____ oil leakage can occur. It comes through the carbon seal assembly for the No. 2 bearing. This usually occurs when the engine turns at low speeds for an extended time (when an engine has an extended start/shutdown or when an engine turns freely in the wind). After the engine shutdown, this oil leakage can be on the retention bolts for the variable stator vane at the bottom of the engine. It can also be on the bottom of the nose cone/spinner. This small quantity of oil leakage is permitted.
S 415-133-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
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本文链接地址：747-400 AMM 飞机维护手册 动力装置 POWER PLANT 1(55)
