S 864-002

 (3)  
Remove DO-NOT-OPERATE tags from the L and R RECIRC FAN
 switch-lights, on the P5 panel.

 (4)  
Remove the electrical power, if it is not necessary (Ref 24-22-00).

 S 864-001
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A
757 MAINTENANCE MANUAL
 OVERHEAD AIR DISTRIBUTION RESTRICTOR - REMOVAL/INSTALLATION
___________________________________________________________
 1.  General_______
 A.  Restrictor plates are installed along the entire overhead distribution duct, except near the riser ducts. Each restrictor plate is approximately 4 feet (1.2 meters) long. This procedure has instructions to remove and install the restrictor plates.
 TASK 21-23-03-004-011
 2.  Remove the Overhead Air Distribution Restrictor (Fig. 401)_______________________________________________
 A.  References
 (1)  
25-22-01/401, Sculptured Ceiling Panels

 B.  
Access

 (1)  
Location Zones 223/224 Area above passenger cabin ceiling - section 41 233/234 Area above passenger cabin ceiling - section 43 243/234 Area above passenger cabin ceiling - section 44 253/254 Area above passenger cabin ceiling - section 46

 C.  
Remove the restrictor plate

 S 024-021
 (1)  
Remove the applicable sculptured ceiling panel (AMM 25-22-01/401).

 S 034-005

 (2)  
Remove the applicable overhead nozzle assembly.

 (a)  
Remove the screws that hold the overhead nozzle assembly to the adapter.

 (b)  
Remove the nozzle gap cover on each end of the overhead nozzle assembly.

 S 024-022
 (3)  
Remove the applicable adapter.

 (a)  
Remove the screws that hold the joint cover to the adapter.

 (b)  
Remove the joint cover.

 (c)  
Remove the seal from the joint cover.

 (d)  
Remove the screws that hold the adapter to the overhead distribution duct.

 (e)  
Pull the adapter away from the overhead distribution duct.

 (4)  
Remove the applicable restrictor plate.

 S 024-006
 TASK 21-23-03-404-015
 3.  Install the Overhead Air Distribution Restrictor (Fig. 401)________________________________________________
 A.  Consumable Materials
 (1)  
B00369 - Solvent - Methyl Ethyl Ketone (MEK)

 (2)  
A00027 - Adhesive - BAC5010, Type 60

 (3)  
A00923 - Adhesive - BAC5010, Type 77 (Optional to Type 60)

 (4)  
G00004 - Tape - 3/4-inch wide, double back,
 (Optional to Type 60 adhesive)

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A

757 MAINTENANCE MANUAL
AIR CONDITIONING OVERHEAD OUTLET
SEE A
JOINT
COVER

RESTRICTOR PLATE
DISTRIBUTION DUCT
SCREWS (EXAMPLE)
ADAPTER
NOZZLE GAP COVER
AIR CONDITIONING
OVERHEAD
OVERHEAD OUTLET
NOZZLE ASSEMBLY
A
Air Conditioning Restrictor Installation
Figure 401

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A

757
MAINTENANCE MANUAL

 B. References
 (1)  
25-22-01/401, Sculptured Ceiling Panels

 C.
Access

 (1)  
Location Zones 223/224 Area above passenger cabin ceiling - section 41 233/234 Area above passenger cabin ceiling - section 43 243/234 Area above passenger cabin ceiling - section 44 253/254 Area above passenger cabin ceiling - section 46
　
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