(2)
Mirror
B.
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 75-32-01/401, 2.5 Bleed Valve Actuator
(5)
AMM 75-32-03/401, 2.9 Bleed Valve
(6)
AMM 75-32-04/401, 2.9 Bleed Valve Solenoid
(7)
AMM 75-32-05/401, Stability Bleed Pneumatic Relay Valve
(8)
AMM 78-31-00/201, Thrust Reverser System
(9)
IPC 75-32-01 Fig. 5
(10)
IPC 75-32-03 Fig. 1
(11)
IPC 75-32-03 Fig. 5
(12)
IPC 75-32-04 Fig. 1
C.
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
D.
Prepare for the Inspection of the Compressor Bleed Control-System
(1)
Open the fan cowl panels (AMM 71-11-04/201).
S 016-012-N00
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A
SEE B
LEFT 2.9
LINKAGE
BELLCRANK
BLEED VALVE FWD
SEE C
A
2.5 BLEED
BLEED NO. 7 ACTUATOR
DUCT CASE
PORT STRUT
B
Compressor Bleed Control System Inspection
Figure 601 (Sheet 1)
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2.5 BLEED VALVE
TO APPLY FINGER
(NORMAL POSITION
PRESSURE TOWARDS
AT ENGINE SHUTDOWN)
THE FORWARD POSITION
Compressor Bleed Control System Inspection
Figure 601 (Sheet 2)
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H19972
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
RIGHT 2.9 BLEED VALVE
SEE D
SEE E
FWD
D
VALVE PNEUMATIC RELAY STABILITY BLEED
SOLENOID VALVE 2.9 BLEED
CASE INTERMEDIATE
TRANSDUCER (N1) (REF) EEC SPEED FWD
E
Figure 601 (Sheet 3) Compressor Bleed Control System Inspection
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