................................................................................. | Long Term | | | | | | | | |
_________ ................................................................................. | 1. When the storage is more than 30 days| | | | | | | | | | the procedures that follow are for | | | | | | | | | | protection of the airplane for a | | | | | | | | | | time up to 2 years. | | | | | | | | | | Do the procedures that follow at | | | | | | | | | | the start of the storage cycle | | | | | | | | | | and at the specified intervals. | | | | | | | | | | Also do the short term storage | | | | | | | | | | procedures. | | | | | | | | | ................................................................................. | A. Each 60-day cycle, make a check of| | | | | X | | | | | the hydraulic system components | | | | | | | | | | that were cleaned and lubricated | | | | | | | | | | with BMS 3-11 assembly lubricant. | | | | | | | | | | Make sure the specified components| | | | | | | | | | have a full layer of lubricant | | | | | | | | | | and do not have corrosion | | | | | | | | | | (AMM 12-12-01/301). | | | | | | | | | | | | | | | | | | | | NOTE:____When the lubrication is not| | | | | | | | | | complete and some | | | | | | | | | | components are corroded, | | | | | | | | | | clean the area fully and do| | | | | | | | | | the preservation procedure.| | | | | | | | | | Refer to the Boeing | | | | | | | | | | Corrosion Manual for the | | | | | | | | | | necessary procedures. | | | | | | | | |
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
10-11-02
ALL ú ú 02 Page 230 ú Mar 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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| .................................................................................
| B. Each 180-day cycle, release the | X | | | | | | X | |
| pressure in the hydraulic | | | | | | | | |
| reservoirs and pressurize them | | | | | | | | |
| with dry nitrogen (AMM 29-11-00). | | | | | | | | |
................................................................................. | C. Each 180-day cycle, release the | X | | | | | | X | | | pressure in the hydraulic | | | | | | | | | | accumulators that follow and | | | | | | | | | | pressurize them with dry nitrogen.| | | | | | | | | | | | | | | | | | | | The Parking Brake Accumulator | | | | | | | | | | (AMM 12-15-04). | | | | | | | | | ................................................................................. | FLIGHT CONTROLS | | | | | | | | |
_______________ ................................................................................. | Short and Long Term | | | | | | | | |
___________________ ................................................................................. | The procedures that follow are for | | | | | | | | | | protection of the airplane for a | | | | | | | | | | time up to 2 years. | | | | | | | | | | Do the procedures that follow at | | | | | | | | | | the start of the storage cycle | | | | | | | | | | and at the specified intervals. | | | | | | | | | ................................................................................. | 1. Initially and at each 90-day cycle, | | | | | | | | | | operate the flight controls that | | | | | | | | | | follow. Do this for the complete | | | | | | | | | | cycles specified below: | | | | | | | | | ................................................................................. | A. The leading edge slats | X | | | | | X | | | | (one cycle) (AMM 27-81-00). | | | | | | | | | ................................................................................. | B. The trailing edge flaps | X | | | | | X | | | | (one cycle) (AMM 27-51-00). | | | | | | | | | ................................................................................. | C. The spoilers (three cycles) | X | | | | | X | | | | (AMM 27-61-00). | | | | | | | | | ................................................................................. | D. The ailerons (three cycles) | X | | | | | X | | | | (AMM 27-11-00). | | | | | | | | | ................................................................................. | E. The elevators (three cycles) | X | | | | | X | | | | (AMM 27-31-00). | | | | | | | | |
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