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 S 216-023-N00
 CAUTION: CLOSE THE SCREEN PORTS COMPLETELY WITH TAPE BEFORE YOU DO
_______ MAINTENANCE IN AN AREA WHERE YOU FIND PIECES OR SECTIONS OF A SCREEN ARE MISSING. PARTS CAN FALL INTO THE ENGINE WHEN YOU DO NOT CLOSE THE SCREEN PORTS.
 (5)  Visually examine the screens for the 2.5 bleed valve.
 NOTE: The screens are installed in the eight 2.5 bleed ports that
____
 are above the horizontal centerline of the engine.

 (a)  Examine the screens for damage.
 1)  If necessary, remove loose or broken pieces from the screens.
 S 216-006-N00
 (6)  Visually examine the 2.9 bleed valves for cracks and if it is attached correctly.
 (a)  
If a 2.9 bleed valve is not attached correctly, tighten or
 replace the mounting bolt(s) as necessary.

 (b)  
If there are cracks, replace the applicable 2.9 bleed valve
 (AMM 75-32-03/401).

 

 S 016-007-N00
 (7)  
Remove the No. 3 segment for the fan exit liner (AMM 72-34-03/401) to get access to the solenoid for the 2.9 bleed valve.

 S 216-008-N00

 (8)  
Visually examine the solenoid for the 2.9 bleed valve.

 (a)  
Examine the solenoid for the correct installation.

 1)  If the solenoid is not attached correctly, tighten or replace the mounting bolt(s) as necessary.

 (b)  
Examine the solenoid for cracks.

 

 1)  Replace the solenoid if there are cracks
 (AMM 75-32-04/401).

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 75-32-00
 ALL  ú ú N01 Page 607 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 216-009-N00
 (9)  
Visually examine the pneumatic relay valve for the stability bleed.

 (a)  
Examine the pneumatic relay valve for the correct installation.

 1)  If the pneumatic relay valve is not attached correctly, replace or tighten the mounting bolt(s).

 (b)  
Examine the pneumatic relay valve for cracks.

 (c)  
Replace the pneumatic relay valve if there are cracks (AMM 75-32-05/401).

 S 416-010-N00
 (10)
 Install the No. 3 and No. 5 segments of the fan exit liner
 (AMM 72-34-03/401).

 F.  
Return the Aircraft to Its Usual Condition.

 S 416-019-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Close the thrust reversers (AMM 78-31-00/201).

 S 416-014-N00

 (2)  
Close the core cowl panels (AMM 71-11-06/201).

 S 416-015-N00

 (3)  
Close the fan cowl panels (AMM 71-11-04/201).

 S 446-016-N00

 (4)  
Do the activation procedure for the thrust reversers
 (AMM 78-31-00/201).

 

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-32-00
 ALL  ú ú N01 Page 608 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 2.5 BLEED VALVE ACTUATOR - MAINTENANCE PRACTICES
________________________________________________
 1.  General_______
 A.  Use this procedure for the service or operation of the PWA 49030 or the CTE 5100 Hydraulic Pump. The CTE 5100 Pump replaces the PWA 49030 pump.
 B.  Either Hydraulic Pump is available with an air driven pneumatic motor or and electric motor. All pumps must be serviced with clean filtered Calibrating Fluid (P03-003).
 C.  These pumps are used for many applications and for other engine models. Make sure that you have the necessary adapters, elbows, and fittings for your application. The adjustment procedure specifies the correct adapters to connect the hoses to the actuator.
 D.  This procedure has the tasks necessary to operate the pneumatic motor or electric motor driven pumps.
　
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