(2)
IPC 35-21-15
B. Access
(1) Location Zone 124 Forward Cargo Container Compartment, Aft Half Right
C. Procedure
S 914-012
(1)
Read and obey the safety precautions and general instructions before you do the maintenance (AMM 35-00-00/201).
S 434-007
(2)
Remove the protective plug from the port.
S 424-008
(3)
Install the test adapter.
(a)
Put the test adapter in position on the manifold.
(b)
Install the bolt through the lanyard terminal and into the saddle clamp locknut.
(c)
Tighten the bolt to 20 pound-inches over torque required to overcome locknut friction.
S 864-017
WARNING:_______OPEN THE SHUTOFF VALVE ON ALL THE OXYGEN CYLINDERS 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 ALL THE OXYGEN CYLINDERS
_______ MORE THAN 25 POUND-INCHES. THIS CAN CAUSE DAMAGE TO THE SHUTOFF VALVE.
(4) Open the shutoff valve on all the oxygen cylinders:
(a) Slowly turn the shutoff valves until it is fully open.
NOTE: The shutoff valves can be closed by hand which is
____ equivalent to 25 pound-inches.
(b)
Close the shutoff valves one-fourth of a turn.
(c)
Install a lockwire on the shutoff valves.
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35-21-15
ALL ú ú 04 Page 403 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 414-018
(5) Close the access panels to the oxygen cylinders.
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35-21-15
ALL ú ú 04 Page 404 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
DECOMPRESSION RELAY (R36) - REMOVAL/INSTALLATION
________________________________________________
1. General_______
A. These tasks are included in this procedure:
(1)
Removal of the R36 decompression relay.
(2)
Installation of the R36 decompression relay.
B. The decompression relay is installed on the P414 panel.
TASK 35-21-17-004-001
2. Decompression Relay (R36) Removal_________________________________
A. References
(1)
AIPC 35-21-17
(2)
AMM 35-00-00/201, Oxygen
(3)
SSM 35-11-01
(4)
WDM 35-11-11
B. Access
(1) Location Zone 117 Electrical and Electronics Compartment Left
C. Procedure
S 914-008
(1)
Read and obey the safety precautions and general instructions before you do the maintenance (AMM 35-00-00/201).
S 864-002
(2)
Open this circuit breaker and attach a DO-NOT-CLOSE tage:
(a) P7 Overhead Circuit Breaker Panel
1) 7D4 OXYGEN VALVE & IND
S 024-003
(3) Remove the decompresion relay.
(a)
Remove the fasteners.
(b)
Disconnect the plug of the decompression relay from the panel.
TASK 35-21-17-404-004
3. Decompression Relay (R36) Installation______________________________________
A. References
(1) AIPC 35-21-17
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