(l)
Close the right lid of the stowage box.
S 712-005
(5)
Do the task: "Operational Test - Crew Oxygen" (AMM 35-11-00/501).
S 712-009
(6)
Do this task to make sure the captain's boom mic operates correctly: " Flight Interphone System Test " (AMM 23-51-00/501).
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747-400 MAINTENANCE MANUAL
MASK/REGULATOR AND STOWAGE BOX - REMOVAL/INSTALLATION
_____________________________________________________
1. General
_______
A. This procedure includes these tasks:
(1)
Stowage Box Removal
(2)
Stowage Box Installation
(3)
Mask/Regulator Removal
(4)
Mask/Regulator Installation
B. The removal and installation procedure is for one mask/regulator and one stowage box. Do the steps in this procedure again for the other masks/regulators and stowage boxes.
C. A stowage box is installed at each crew station. Access to each stowage box is through the flight compartment.
TASK 35-11-18-004-001
2. Stowage Box Removal (Fig. 401)
___________________
A. Standard Tools and Equipment
(1) Caps or Plugs - Package of Clean Protective
B. References
(1)
AMM 35-00-00/201, Oxygen
(2)
IPC 35-11-18
(3)
WDM 35-11-01
C. Access
(1) Location Zone
221 Control Cabin Left
222 Control Cabin Right
D. Procedure
S 914-069
(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 these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel
1) 7A20 CAPT INTERPHONE
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747-400
MAINTENANCE MANUAL
(EXAMPLE)
Crew Oxygen Box Installation
Figure 401
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747-400 MAINTENANCE MANUAL
2) 7A21 OBS INTERPHONE 3) 7A22 F/O INTERPHONE S 864-061 CAUTION: DO NOT TIGHTEN THE SHUTOFF VALVE ON A CREW OXYGEN CYLINDER MORE
_______
THAN 25 POUND-INCHES. THIS CAN CAUSE DAMAGE TO THE SHUTOFF
VALVE.
UAL (3) Close the shutoff valve on the crew oxygen cylinder slowly.
UAL
UAL NOTE: The shutoff valve can be tightened by hand which is____
UAL equivalent to 25 pound-inches.
UAL
S 864-068
(4) Set the dilution control lever on the regulator to 100%.
S 034-064
(5) Set the PRESS TO TEST knob on the regulator to EMERGENCY.
S 714-075
(6) Move the PRESS TO TEST AND RESET lever on the mask stowage box to
bleed the oxygen lines.
S 024-004
(7) Remove the stowage box.
(a) Loosen the four fasteners which hold the stowage box to the
structure and lift the stowage box.
WARNING: LOOSEN THE FITTING CONNECTIONS CAREFULLY. THE REMAINING_______
OXYGEN CAN RELEASE WITH A LARGE FORCE. THIS CAN CAUSE
INJURY TO PERSONS AND DAMAGE TO THE AIRPLANE AND
EQUIPMENT.
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本文链接地址：747-400 AMM 飞机维护手册 氧气 OXYGEN(38)
