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发表于 2013-3-11 19:45:57
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来自： 中国北京
手册中关于拆轮子之前的说明
(1) This procedure is a scheduled maintenance task.
E. Prepare for the Removal
SUBTASK 32-45-11-480-001
WARNING: MAKE SURE THAT THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEAR. WITHOUT THE DOWNLOCK PINS, THE LANDING GEAR CAN RETRACT. THIS CAN CAUSE INJURIES TO PERSONS, AND DAMAGE TO EQUIPMENT.
(1) If the downlock pins are not installed in the nose and main landing gear, do this task: Landing Gear Downlock Pins Installation, TASK 32-00-01-480-801.
SUBTASK 32-45-11-480-002
(2) Make sure the tires have chocks installed around them (CHOCK INSTALLATION, PAGEBLOCK 10-11-05/201).
SUBTASK 32-45-11-860-001
(3) Make sure that the parking brake is released.
SUBTASK 32-45-11-580-001
(4) Lift the wheel and tire assemblies with jacks until they are clear of the ground, do this task: Lift the Main Landing Gear Axles with the Axle Jacks, TASK 07-11-03-580-801.
SUBTASK 32-45-11-860-002
(5) Make sure that the parking brake is set.
NOTE: When you set the parking brake, the brake rotors will be aligned for wheel installation.
SUBTASK 32-45-11-840-001
WARNING: FULLY DEFLATE THE TIRE BEFORE YOU REMOVE THE WHEEL AND TIRE ASSEMBLY. OR, DO AN INSPECTION OF THE WHEEL AND TIRE TO MAKE SURE THAT THEY ARE SAFE. AIR PRESSURE CAN CAUSE AN EXPLOSION OF THE DAMAGED WHEEL AND TIRE COMPONENTS. INJURIES TO PERSONNEL, AND DAMAGE TO EQUIPMENT CAN OCCUR.
WARNING: IT IS RECOMMENDED THAT YOU REMOVE ONLY ONE WHEEL AND TIRE ASSEMBLY FROM THE MAIN LANDING GEAR AT A TIME. IF YOU REMOVE THE TWO WHEEL AND TIRE ASSEMBLIES AT THE SAME TIME, STRUCTURAL DAMAGE AND INJURY TO PERSONS CAN OCCUR IF THE AIRPLANE FALLS.
(6) Do the following steps to examine the tire and wheel assembly to see if it is safe to remove without tire deflation, or deflate the tire:
NOTE: If you will not install the same wheel and tire assembly, deflate the tire to prevent transporting an inflated tire.
(a) Inspect the wheel and tire assembly [1] and/or the inboard wheel and tire assembly [17] to see if it has the conditions that follow:
1) Inspect the tires and make sure there are no air leaks, abrasions, unusual worn areas, cuts or flat spots, do this task: Tires Inspection, TASK 32-45-00-700-803.
2) Inspect the wheels and make sure there is no evidence of wheel damage, including corrosion, loose or damaged or missing tie bolts or tire nuts, overheat damage or cracks, do this task: Wheels Fast Check (Wheel Installed on the Airplane), TASK 32-45-00-700-801.
3) If the wheel and tire assembly has any of the conditions in the above steps, you must deflate the tire.
WARNING: MAKE SURE THAT ALL PERSONNEL ARE CLEAR OF THE INFLATION VALVE ASSEMBLY PATH WHILE YOU REMOVE IT. IF THE INFLATION VALVE ASSEMBLY EJECTS WHILE YOU REMOVE IT, INJURY TO PERSONNEL CAN OCCUR.
CAUTION: MAKE SURE THAT THE DEFLATED TIRE THAT IS ON THE AXLE DOES NOT TOUCH THE GROUND. IF THE TIRE DOES TOUCH THE GROUND, THE TIRE'S BEAD SEAT CAN MOVE OUT OF ITS POSITION AND BECOME UNSEATED. THE UNSEATED BEAD SEAT CAN CAUSE LEAKAGE WHICH THEN CAN CAUSE DAMAGE TO THE TIRE AND WHEEL.
CAUTION: DO NOT USE TOO MUCH FORCE ON THE VALVE CORE. THE CORE PARTS CAN MOVE AND THE SLEEVE AND THE LOWER END OF THE POPPET WILL STAY IN THE VALVE STEM. IF PARTS STAY IN THE VALVE STEM, DAMAGE CAN OCCUR TO THE VALVE STEM.
(b) Deflate the tire with the small bore tire deflator, COM-4046.
(c) If you cannot use the usual procedure to deflate the tire because the valve core is damaged, do these steps:
1) Turn the valve assembly slowly in a counterclockwise direction until there is gas leakage through the boss.
2) At the same time, push lightly on the valve assembly.
3) After all of the gas has been released, remove the valve assembly from the tire.
手册中关于顶升的说明
2. Lift the Main Landing Gear Axles with the Axle Jacks
A. General
WARNING: DO NOT MOVE CARGO INTO OR OUT OF THE AIRPLANE WHILE THE AXLES ARE ON JACKS. A CHANGE IN THE CENTER OF GRAVITY CAN CAUSE A HIGH LOAD ON THE AXLES. IT CAN ALSO CAUSE THE AIRPLANE TO FALL OFF THE JACKS. INJURIES TO PERSONNEL, AND DAMAGE TO EQUIPMENT WILL OCCUR.
(1) Obey this warning during all of this task.
CAUTION: WHEN YOU JACK THE AIRPLANE, DO NOT PUT THE JACK UNDER ANY PART OF THE LANDING GEAR EXCEPT FOR THE AXLE JACK PAD AT JACK POINT E. IF YOU DO NOT PUT THE JACK IN THE CORRECT LOCATIONS, LANDING GEAR FAILURE CAN OCCUR.
(2) There are jack points under each landing gear axle to permit the removal of the wheel and tire or brake assembly without jacking the complete airplane.
NOTE: There are no special wind restrictions when you jack an individual landing gear with the axle jacks. Use tie downs in winds that are more than 35 knots when you jack the complete airplane, or when you jack more than one landing gear. Make sure you use the mooring procedure in high winds, (TASK 10-21-00-580-801).
(3) Make sure you have the correct axle jack pad heights and clearances between the tires, (TASK 07-11-01-580-815).
NOTE: The dimensions can change when conditions change.
(4) The design of the axle jack points will permit you to change two flat tires on the same landing gear while the airplane is at the maximum taxi weight (MTW).
NOTE: The load on an axle jack point must not be more than the maximum permitted.
(5) Follow these safety instructions when you lift the airplane on the axle jacks:
(a) Lift only one main landing gear at a time.
(b) Remove only one wheel on each gear at a time.
NOTE: You can remove two wheels from the gear only when a jack with a mechanical safety provision (lock device) is used.
(c) Make sure the airplane is turned into the wind (if it is applicable) when it is out of the hangar.
E. Prepare for Procedure
SUBTASK 07-11-03-580-001
(1) Make sure the airplane center of gravity is within the specified limits, refer to this task: Lift the Airplane with the Jacks, TASK 07-11-01-580-815.
SUBTASK 07-11-03-580-002
WARNING: MAKE SURE THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEAR. WITHOUT THE DOWNLOCK PINS, THE LANDING GEAR COULD RETRACT AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Make sure the landing gear down lock equipment, SPL-1880, are installed, do this task: Landing Gear Downlock Pins Installation, TASK 32-00-01-480-801.
F. Lift the Main Landing Gear
SUBTASK 07-11-03-580-003
(1) If one tire on the main gear axle is flat, do these steps:
(a) Use the minimum height axle jacks to lift the airplane, do this task: Lift the Airplane with the Jacks, TASK 07-11-01-580-815.
(b) If you cannot install the axle jack, do this step:
WARNING: MAKE SURE THE INCLINE BLOCK RAMP ANGLE IS NOT MORE THAN 5 DEGREES. IF THE ANGLE IS HIGHER, YOU CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
1) Put an inclined block below the good wheel.
NOTE: Make sure the incline block ramp angle is not more than 5 degrees.
NOTE: Make sure the block is of sufficient height to make the subsequent installation of an axle jack not necessary.
2) Tow the airplane to move the main landing gear wheel up on the inclined blocks, do this task: Maintenance Towing, TASK 09-11-00-580-801.
SUBTASK 07-11-03-580-004
(2) If two tires on the main gear axle are flat, do these steps:
(a) If jacks of a correct height are available, use the minimum height axle jacks to lift the airplane.
(b) If jacks of a correct height are not available, do one of the two procedures that follow:
1) Do the servicing of the main landing gear tire that is serviceable, do this task: Add Nitrogen or Air to the Tire, TASK 12-15-51-610-802.
NOTE: A serviceable tire, is a tire in satisfactory condition that can be inflated and is installed correctly.
a) Install the main gear axle jack, axle jack, COM-5928.
WARNING: MAKE SURE THE INCLINE BLOCK RAMP ANGLE IS NOT MORE THAN 5 DEGREES. IF THE ANGLE IS HIGHER, YOU CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
2) Do this procedure to lift the main gear wheels onto inclined blocks:
a) Put one inclined block below each wheel of the main gear axle that you need to install an axle jack.
NOTE: Make sure the incline block ramp angle is not more than 5 degrees. The blocks must be level at a minimum height of 4 inches (10.16 centimeters) to install a jack with a closed height of 10 inches (25.4 centimeters).
b) Tow the airplane to move the main landing gear wheel up on the inclined blocks, do this task: Maintenance Towing, TASK 09-11-00-580-801.
c) Put wheel chocks, COM-1502, around the nose gear and opposite main landing gear (CHOCK INSTALLATION, PAGEBLOCK 10-11-05/201).
d) Install the main gear axle jack, axle jack, COM-5928.
(c) Lift the applicable landing gear on the axle jack.
NOTE: Use the jack manufacturer's instructions to lift the airplane on the jacks. |
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