36-11-24
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747-400 MAINTENANCE MANUAL
 BLEED AIR CONTROL MODULE - REMOVAL/INSTALLATION
_______________________________________________
 1.  General_______
 A.  This procedure contains two tasks. The first task removes the bleed air control module. The second task installs the bleed air control module and performs a post installation test of the bleed air control module.
 B.  The bleed air control module is found at the pilot's overhead panel, P5 in the control cabin.
 TASK 36-11-29-004-001
 2.  Remove the Bleed Air Control Module (Fig. 401)___________________________________
 A.  References
 (1)  
IPC 36-21-00 Fig. 5

 B.  
Access

 (1)  
Location Zone
 222 Control Cabin, R.H

 C.  
Prepare to Remove the Bleed Air Control Module

 S 864-002
 (1)  
Open the applicable circuit breaker that follows and attach a DO-NOT-CLOSE tag:

 (a)  
On the P6 main power distribution panel 1) 6H32, AIR SUPPLY CONT ENG 1 2) 6H33, AIR SUPPLY CONT ENG 2 3) 6H34, AIR SUPPLY CONT ENG 3 4) 6H35, AIR SUPPLY CONT ENG 4 5) 180J1, PACK 1 FLOW CONT VLV 6) 180J2, PACK 1 PROT 7) 180F1, PACK 2 FLOW CONT VLV 8) 180F2, PACK 2 PROT 9) 180J16, PACK 3 FLOW CONT VLV 10) 180J17, PACK 3 PROT

 D.  
Remove the Bleed Air Control Module

 S 024-003
 (1)  
Loosen the quarter-turn fasteners (4 locations) and move the module until you get access to the electrical connectors.

 (2)
Pull the bleed air control module from the P5 overhead panel.

 S 934-015

 (3)  
Put a label on the electrical connectors on the back of the panel to make them easily identifiable for installation.

 S 024-014
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 36-11-29
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747-400 MAINTENANCE MANUAL
BLEED CONTROL

FLIGHT COMPARTMENT

QUARTER-TURN FASTENER (4 LOCATIONS)

BLEED CONTROL MODULE, M7328

Bleed Air Control Module - Removal/Installation

Figure 401

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 36-11-29
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F02233
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747-400
MAINTENANCE MANUAL

 S 024-011
 (4)  Disconnect the electrical connectors from the back of the bleed air control module.
 TASK 36-11-29-404-004
 3. Install the Bleed Air Control Module (Fig. 401)
____________________________________
 A. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 49-11-00/201, Auxiliary Power Unit

 (3)  
IPC 36-11-29, Fig. 5

 B.
Access

 (1)  
Location Zone
 222 Control Cabin, R.H.
 133 Air Conditioning Equipment Bay, Left
 134 Air Conditioning Equipment Bay, Right

 C.
Install the Bleed Air Control Module

 S 424-005
 (1)  
Connect the applicable electrical connectors to the back of the bleed air control module.

 S 424-011

 (2)  
Put the bleed air control module in position onto the pilot's overhead panel, P5 and then tighten the quarter-turn fasteners (4 locations).

 S 424-009

 (3)  
Turn each quarter-turn fasteners (4 locations) to secure the module to the P5 panel.

 D.
Post Installation Test of the Bleed Air Control Module
　
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