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 35 - 40 pound-inches.
 G.  Do the outflow valve installation test.
 S 862-016
 (1) Remove the DO-NOT-CLOSE tags and close these circuit breakers on the
 P11 panel:
 (a) 11B14, CABIN ALTITUDE CONTROL MANUAL
 (b) 11B15, CABIN ALTITUDE CONTROL SELECT
 (c) 11N15, CABIN ALTITUDE CONTROL AUTO 1
 (d) 11N24, CABIN ALTITUDE CONTROL AUTO 2
 S 862-017
 (2) Supply electrical power (AMM 24-22-00/201).
 S 862-018
 (3) Put the MODE SELECT selector, on the pilots' overhead control panel,
 P5, to the MAN position.
 ú
 ú  S 862-019
 ú  (4) Turn and hold the MANUAL selector to the DESCEND position.
 ú  (a) Make sure the VALVE position indicator moves to the full-closed
 ú  (CL) position within 30 seconds.
 ú
 ú  S 862-048
 ú  (5) Release the MANUAL selector.
 ú  (a) Make sure the cabin pressure outflow valve is fully closed.
 S 862-021
 (6) Put the MODE SELECT selector, on the P5 panel to the AUTO 1
 position.
 ú  (a) Make sure the VALVE position indicator moves to the full-open
 ú  (OP) position within 30 seconds.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-31-03
 ALL  ú ú 02.1 Page 205 ú Sep 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL

 ú (b) Make sure the cabin pressure outflow valve is fully open. ú ú S 862-023 ú (7) Turn the MODE SELECT selector, on the P5 panel back to the MAN ú position. ú ú S 862-024 ú (8) Turn and hold the MANUAL selector to the DESCEND position to close ú the valve. ú (a) Make sure the VALVE position indicator moves to the full-closed ú (CL) position within 30 seconds. ú (b) Make sure the cabin pressure outflow valve is fully closed.
 S 862-026
 (9) Put the MODE SELECT selector, on the P5 panel, to the AUTO 2
 position. ú (a) Make sure the VALVE position indicator moves to the full-open ú (OP) position within 30 seconds. ú (b) Make sure the cabin pressure outflow valve is fully open.
 H. Put the airplane back to its usual condition.
 S 412-028
 (1)  
If the valve was installed through the bulk cargo compartment, then do the steps that follow:

 (a)  
Install the endliner on the aft end of the bulk cargo compartment (AMM 25-50-03/401).

 (b)  
Close the aft cargo door, 823 (AMM 06-46-00/201).

 S 862-029
 (2)  Remove the electrical power if it is not necessary (AMM/24-22-00/201).
 TASK 21-31-03-102-030
 4. Clean the Cabin Pressure Outflow Valve (Fig. 201)
______________________________________
 A. General
 (1)  
You can clean the outflow valve through the aft end of the bulk cargo compartment or from the out side of the airplane. Access to the valve is most easily done from the out side of the airplane. However, to clean the valve from the out side of the airplane, the valve must be fully open.

 B.
Consumable Materials

 (1)  
B00074 - Solvent, Stoddard, spec P-D-680.

 (2)  
G00268 - Brush, soft bristle paint

 (3)  
E00015 - Cloth, lint free, clean

 C.
References

 (1)  
AMM 06-46-00/201, Entry, Service, and Cargo Doors Access Doors and Panels

 (2)  
AMM 24-22-00/201, Electrical Power Control

 (3)  
AMM 25-50-03/401, Bulkhead Lining

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-31-03
 ALL  ú ú 01.1 Page 206 ú Sep 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 D. Access
 (1)  
Location Zones
 165 Area aft of bulk cargo compartment (Left)

 E.
Prepare to clean.

　
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