10-11-02
ALL ú ú 02 Page 234 ú Jun 20/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
~............................................................................... | | Procedures Repeat Intervals (Days) | | ....................................... | | | | | | | | | As| | Item | Initial | 7 | 14| 30| 60| 90|180|Rqd| ................................................................................. | WARNING:_______OBEY THE PRECAUTIONS IN | | | | | | | | | | AMM 12-15-08 WHEN YOU REMOVE | | | | | | | | | | AND INSTALL OXYGEN | | | | | | | | | | CYLINDERS. IF YOU DO NOT | | | | | | | | | | OBEY THE PRECAUTIONS, INJURY | | | | | | | | | | TO PERSONS OR DAMAGE TO | | | | | | | | | | EQUIPMENT CAN OCCUR. | | | | | | | | | | | | | | | | | | | | 1. Remove the portable oxygen cylinders | X | | | | | | | | | and the crew oxygen cylinders (this | | | | | | | | | | includes the regulator). Follow | | | | | | | | | | the operator's standard procedures | | | | | | | | | | and put them in a spares storage. | | | | | | | | | | | | | | | | | | | | NOTE: Attach a tag that identifies | | | | | | | | |
____ | each cylinder as a serviceable| | | | | | | | | | part when the pressure is | | | | | | | | | | above 50 psi. Also do this if| | | | | | | | | | the hydrostatic test date has | | | | | | | | | | not expired. When the the | | | | | | | | | | hydrostatic test date has | | | | | | | | | | expired, follow the operator's| | | | | | | | | | standard procedures. | | | | | | | | | .................................................................................
| 2. Put a cap on the cylinder end of the | X | | | | | | | |
| oxygen distribution lines. Also, | | | | | | | | |
| put a cap on the connector end of | | | | | | | | |
| the hoses that are in the oxygen | | | | | | | | |
| mask stowage boxes. Put clean | | | | | | | | |
| polyethylene bags on the lines and | | | | | | | | |
| hoses that have the caps. Attach | | | | | | | | |
| red flags to the bags | | | | | | | | |
| (AMM 35-11-51/401). | | | | | | | | |
................................................................................. | 3. Remove the crew system oxygen masks. | X | | | | | | | | | Put the masks in clean polyethylene | | | | | | | | | | bags for storage. Seal the oxygen | | | | | | | | | | hose connector on the stowage box | | | | | | | | | | assembly with a cap. | | | | | | | | |
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10-11-02
ALL ú ú 02 Page 235 ú Jun 20/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
~............................................................................... | | Procedures Repeat Intervals (Days) | | ....................................... | | | | | | | | | As| | Item | Initial | 7 | 14| 30| 60| 90|180|Rqd| ................................................................................. | POTABLE WATER SYSTEM | | | | | | | | |
____________________ ................................................................................. | Short and Long Term | | | | | | | | |
___________________ .................................................................................
| 1. Drain all of the water system. This | X | | | | | | | |
| includes the galley and the lavatory | | | | | | | | |
| tanks. Do a purge of the complete | | | | | | | | |
| potable water system with dry air and| | | | | | | | |
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