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 A.  This procedure gives the instructions to examine the components of the compressor bleed control system for damage and correct installation.
 B.  You can get access to the components of the compressor bleed control system for the inspection through the thrust reversers.
 TASK 75-32-00-206-001-N00
 2.  Examine the Compressor Bleed Control System (Fig. 601)
___________________________________________
 A.  Standard Tools and Equipment
 (1)
Light - Fluorescent, white

 (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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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////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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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.

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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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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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 ALL  ú ú N01 Page 604 ú Feb 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
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