747-400 AMM 飞机维护手册 动力装置 POWER PLANT 1(48)

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 C.  The Power Plant Test Reference Table that follows shows which procedures are necessary after an engine, module or component is repaired or replaced. These tests are necessary to make sure the engine operates satisfactorily after repair or replacement.
 D.  If more than one test is listed (example: 2, 3, 4), all the tests are necessary and must be done in the sequence shown.
 E.  The test for a complete engine (powerplant) replacement is for engines that were tested before in a test cell. It is also for engines that were removed for line maintenance tasks and not tested in a test cell. Line maintenance tasks are:
 (1)  
The removal, installation or repair of engine externals (LRU's) with the engine removed.

 (2)  
The replacement or repair of the LPC 1st stage (fan) blades with the engine removed.

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(3)  
The replacement or repair of the fan (front) case with the engine removed.

 (4)  
The replacement or repair of the main gearbox with the engine

 removed. ~.............................................................................. | Power Plant Test Reference Table | ................................................................................ | Component Repaired or Replaced | Necessary Test | ................................................................................ |LOW PRESSURE COMPRESSOR (LPC) | | | | | | Low Pressure Compressor (LPC) | 3, 9, 12, 13 | ................................................................................
 |FAN CASES  |  |
 |  |  |
 |  Fan Case Assembly  |  8, 14  |
 |  Fan Exit Case Assembly  |  8, 14  |
 |  Fan Blades  |  8  |

 ................................................................................ |INTERMEDIATE CASE | | | | | | Intermediate Case | 3, 9, 12, 13 | ................................................................................ |INLET COWL | | | | | | Inlet Cowl | 14 | ................................................................................ |HIGH PRESSURE COMPRESSOR (HPC) | | | | | | High Pressure Compressor (HPC) | 9 | ................................................................................ |DIFFUSER AND COMBUSTOR | | | | | | Diffuser and Combustor | 3, 9, 13 | ................................................................................ |TURBINE NOZZLE | | | | | | Turbine Nozzle | 9 | ................................................................................ |HIGH PRESSURE TURBINE (HPT) | | | | | | High Pressure Turbine (HPT) | 9 | ................................................................................ |LOW PRESSURE TURBINE (LPT) | | | | | | Low Pressure Turbine (LPT) | 9 | ................................................................................ |TURBINE EXHAUST CASE | | | | | | Turbine Exhaust Case | 8, 12, 13 |
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
~.............................................................................. | Power Plant Test Reference Table | ................................................................................ | Component Repaired or Replaced | Necessary Test | ................................................................................
 |MAIN GEARBOX  |  |
 |  |  |
 |  Main Gearbox  |  3, 12, 13  |
 |  Accessory Drive Seals  |  3  |
 |  Gearbox Strainer Element Assembly  |  2  |
 |  Manual Crank Pad Cover  |  3 or 5  |

 ................................................................................ |ANGLE GEARBOX | | | | | | Angle Gearbox | 3, 12, 13 | | Angle Gearbox Lower Cover | 2 | ................................................................................ |ELECTRICAL POWER (24-00-00) | | | | | | Air/Oil Heat Exchanger (IDGS) | 3 | ................................................................................ |FUEL AND CONTROL SYSTEM (73-00-00) | | | | | | Fuel Pump | 2 or 3 | | Fuel Pump Filter Element | 2 or 3 | | Fuel Distribution Valve | 2 or 3 | | Fuel Distribution Valve Strainer | 2 (Wet Motor) or 3 | | Fuel Injector And Support | 4 | | Fuel Manifolds and External Tubes | 2 or 3 | | Fuel Bypass Valve | 2 or 3 | ................................................................................ | Fuel Metering Unit | 3 | | EEC Inlet Total Pressure/Temperature | | | (PT2/TT2) Probe | 6 or 7 and 14 | | Electronic Engine Control (EEC) | 7, 6 | | EEC Alternator (N2 Transducer) | 6 | | EEC Speed Transducer (N1) | 3 | | EEC Wiring Harness | 6 | | EEC Programming Plug | 7 | | EEC Fuel Temperature Thermocouple Probe | 3 | | EEC Oil Temperature Thermocouple Probe | 3 | | EEC Thermocouple Probe (TT3) | 3 | ................................................................................ | Fuel Flow Transmitter | 3 | | Fuel Filter Differential Pressure Switch | 2 (Wet Motor) or 3 | ................................................................................ |IGNITION SYSTEM (74-00-00) | | | | | | Ignition Exciter | AMM 74-00-00/501, | | Exciter-To-Igniter Plug Cable | Operational (Audible) | | Igniter Plug | Test |
　
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