or ENG 1 PERF SOL PWR A
 2) 6F16 ENG 1 PERF SOL PWR B
 3) 6E15 ENG 2 PERF SOL PWR A
 4) 6E16 ENG 2 PERF SOL PWR B
 5) 6D15 ENG 3 PERF SOL PWR A
 6) 6D16 ENG 3 PERF SOL PWR B
 7) 6C15 ENG 4 PERF SOL PWR A
 8) 6C16 ENG 4 PERF SOL PWR B

 S 714-028-N00
 (7)  Do the test of the HPC secondary flow control valve and IDG air/oil heat exchanger valve override solenoid that is shown in the Power Plant Test Reference Table (AMM 71-00-00/501).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ENGINES WITHOUT PHASE 3 CHANGES ú

 75-33-04
 ú ú N02 Page 409 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
PS3 AIR FILTER ELEMENT - MAINTENANCE PRACTICES
______________________________________________
 1.  General
_______
 A.  This procedure gives the instructions to remove, examine, clean, and install the filter element for the PS3 air. For the removal and installation of the filter assembly, refer to AMM 75-33-02/401.
 B.  The filter element is a part of a filter assembly for the PS3 air which you can remove without the removal of the filter assembly from the engine. Two (top and lower) filters are installed on each side of the HPC forward case at the 1:30 and 11 o'clock positions. The top right filter cleans 15th-stage (muscle) air supply to these components: the control valve for the HPC secondary flow, the override solenoid for the IDG air/oil heat exchanger valve, the solenoid for the 2.9 bleed valve, and the stability pneumatic relay valve; while the lower right filter cleans the muscle air supply to the right control valve for the HPC secondary flow. The top left filter cleans the muscle air supply to the cooling air valves for the turbine vane and blade; while the lower left filter cleans the muscle air supply to the left control valve for the HPC secondary flow.
 C.  You can get access to the filter element installed at 1:30 o'clock position through the right thrust reverser. You can get access to the filter element installed at the 11 o'clock position through the left thrust reverser.
 TASK 75-33-05-002-001-N00
 2.  Remove the PS3 Air Filter Element (Fig. 201)
_________________________________
 A.  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 75-33-02 Fig. 1

 B.  
Access

 (1)  
Location Zone 412 Engine 1 - HPC Fwd Case 1:30 or 11 o'clock 422 Engine 2 - HPC Fwd Case 1:30 or 11 o'clock 432 Engine 3 - HPC Fwd Case 1:30 or 11 o'clock 442 Engine 4 - HPC Fwd Case 1:30 or 11 o'clock

 (2)  
Access Panel
 416 Right Thrust Reverser Half - Engine 1
 415 Left Thrust Reverser Half - Engine 1
 426 Right Thrust Reverser Half - Engine 2
 425 Left Thrust Reverser Half - Engine 2
 436 Right Thrust Reverser Half - Engine 3
 435 Left Thrust Reverser Half - Engine 3
 446 Right Thrust Reverser Half - Engine 4
 445 Left Thrust Reverser Half - Engine 4

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-33-05
 ALL  ú ú N01 Page 201 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE B
SEEA
PS3 AIR FILTER
SEE C
LEFT 2.9 FWD BLEED VALVE (REF)
A
HEAD
RIGHT 2.9 BLEED VALVE (REF)
FILTER ELEMENT
PS3 AIR FILTER
CASE
SEE C
FWD
BC

L-A4267
PS3 Air Filter Element Installation Figure 201
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-33-05
 ALL  ú ú N01 Page 202 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 大氣 AIR 2(108)