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_______ SLOWLY. IF NOT, HIGH TEMPERATURES CAN OCCUR WHICH CAN START AN IGNITION WITH THE OXYGEN. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO THE AIRPLANE AND EQUIPMENT.
 CAUTION: DO NOT TIGHTEN THE SHUTOFF VALVE ON THE OXYGEN CYLINDERS MORE
_______ THAN 25 POUND-INCHES. THIS CAN CAUSE DAMAGE TO THE SHUTOFF VALVE.
 (10) Open the shutoff valve on the remaining oxygen cylinders:
 (a)  Slowly turn the shutoff valve until it is fully open.
 NOTE: The shutoff valve can be closed by hand which is
____
 equivalent to 25 pound-inches.

 (b)  
Close the shutoff valve one-fourth of a turn.

 (c)  
Install a lockwire on the shutoff valve.

 S 864-017
 (11)
 Supply the electrical power (AMM 24-22-00/201).

 S 864-018

 (12)
 Close this circuit breaker and remove the DO-NOT-CLOSE tag:

 (a)  P7 Overhead Circuit Breaker Panel
 1) 7D4 OXYGEN VALVE & IND

 S 784-019
 (13)
 Do the procedure: Do the Pressure Indication Test, in the task: Oxygen Operational Test (AMM 35-21-00/501).

 (14)
 Close all the access panels to the oxygen cylinder.

 S 864-021

 (15)
 Remove the electrical power if it is not necessary (AMM 24-22-00/201).

 S 414-026
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TEST ADAPTER - REMOVAL/INSTALLATION
___________________________________
 1.  General
_______
 A.  Thesee tasks are included in this procedure:
 (1)  
Removal of the test adapter

 (2)  
Installation of the test adapter

 B.  The test adapter is installed in the forward cargo compartment. It is located on the right side of the sidewall adjacent to the flow control units (Fig. 401). Access to the test adapter is through the access panel to the oxygen cylinders.
 TASK 35-21-15-004-001
 2.  Test Adapter Removal (Fig. 401)
____________________
 A.  References
 (1)  
AMM 35-00-00/201, Oxygen

 (2)  
IPC 35-21-15

 B.  Access
 (1)  Location Zone 124 Forward Cargo Container Compartment, Aft Half Right
 C.  Procedure
 S 914-011
 (1)  
Read and obey the safety precautions and general instructions before you do the maintenance (AMM 35-00-00/201).

 S 014-015

 (2)  
Open the access panel to the oxygen cylinders.

 S 864-013
 CAUTION: DO NOT TIGHTEN THE SHUTOFF VALVE ON THE OXYGEN CYLINDERS MORE
_______ THAN 25 POUND-INCHES. THIS CAN CAUSE DAMAGE TO THE SHUTOFF VALVE.
 (3)  Close the shutoff valve on the oxygen cylinders slowly.
 NOTE: The shutoff valves can be tightened by hand which is
____
 equivalent to 25 pound-inches.

 S 024-004
 (4)  Remove the test adapter.
 (a)  
Remove the saddle clamp bolt

 (b)  
Remove the adapter from the manifold.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 401 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

TO THE UPPER DECK CABIN 
SEE  A  SEE B (2 LOCATIONS) ADAPTER TEST 
(REF) UNIT CONTROL FLOW 
TEST ADAPTER  MANIFOLD OXYGEN A 
LANYARD  BOLT  CLAMP SADDLE 
TEST ADAPTER B 
Figure 401 Test Adapter Installation 

C22868
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本文鏈接地址：747-400 AMM 飛機維護手冊 氧氣 OXYGEN(90)