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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
HPC SECONDARY FLOW CONTROL SYSTEM - INSPECTION/CHECK
____________________________________________________
1. General
_______
A. This procedure gives the instructions to examine the control system components of the HPC secondary flow for damage and the correct installation.
B. You can get access to the control system components for the inspection through the two thrust reversers.
C. For the inspection of the filter element for the PS3 air, refer to AMM 75-33-05/201.
TASK 75-33-00-206-001-N00
2. Do the Inspection for the HPC Secondary Flow Control System (Fig. 601)
___________________________________________________________
A. References
(1)
AMM 71-11-04/201, Fan Cowl Panels
(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
AMM 72-34-03/401, Fan Exit Liner Segment
(4)
AMM 75-33-01/401, HPC Secondary Flow Control Valve
(5)
AMM 75-33-02/401, PS3 Air Filter Assembly
(6)
AMM 75-33-03/401, HPC Secondary Flow Control Valve and Turbine Vane and Blade Cooling Air Valve Solenoid
(7)
AMM 75-33-04/401, HPC Secondary Flow Control Valve and IDG Air/Oil Heat Exchanger Valve Override Solenoid
(8)
AMM 78-31-00/201, Thrust Reverser System
(9)
IPC 75-20-01 Fig. 1
(10)
IPC 75-33-01 Fig. 1
(11)
IPC 75-33-02 Fig. 1
(12)
IPC 75-33-03 Fig. 1
(13)
IPC 75-33-04 Fig. 1
B.
Access
(1)
Location Zone 412 Engine 1 - Intermediate and HPC Forward Case 422 Engine 2 - Intermediate and HPC Forward Case 432 Engine 3 - Intermediate and HPC Forward Case 442 Engine 4 - Intermediate and HPC Forward Case
(2)
Access Panel 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 Do the Inspection
(1)
Open the fan cowl panels (AMM 71-11-04/201).
S 016-012-N00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
HPC Secondary Flow Control System Inspection
Figure 601 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
HPC SECONDARY FLOW CONTROL VALVE AND TURBINE VANE AND BLADE COOLING AIR VALVE SOLENOID
CASE INTERMEDIATE FILTER PS3 AIR
FWD
B
VALVE (REF) LEFT 2.9 BLEED C FWD
MANIFOLD (REF) PNEUMATIC INDICATOR VISUAL POSITION
FWD
FUEL/OIL COOLER (REF)
LEFT HPC SECONDARY FLOW CONTROL VALVE
D
HPC Secondary Flow Control System Inspection Figure 601 (Sheet 2)
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