(2)
AMM 24-22-00/201, Electrical Power Control
(3)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
(4)
AMM 32-00-15/201, Landing Gear Door Locks
(5)
AMM 32-00-20/201, Landing Gear Downlocks
B.
Access
(1)
Location Zones
143 MLG Wheel Well (Left)
144 MLG Wheel Well (Right)
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C. Procedure
S 862-040
(1)
Supply electrical power (AMM 24-22-00/201).
S 212-041
(2)
Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
S 492-042
WARNING:_______OBEY THE INSTALLATION PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(3)
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
S 862-043
(4)
Remove the pressure from the left hydraulic system and reservoir (AMM 29-11-00/201).
NOTE: Make sure the reservoir pressure is zero.
____
S 862-044
(5)
Put the control lever for the landing gear on the First Officers' instrument panel, P3, in the OFF position.
S 032-074
(6)
Disconnect the hydraulic line directly downstream of the fuse(s) and attach a temporary hydraulic hose to drain the fluid. Install a plug in the end of each disconnected tube.
S 722-075
(7)
Put the end of the flexible hose in a suitable fluid container.
S 722-077
WARNING: KEEP PERSONS CLEAR OF THE OPEN FUSE PORT WHILE THE HYDRAULIC
_______ LINE IS DISCONNECTED FROM THE PORT AND THE LEFT HYDRAULIC SYSTEM IS PRESSURIZED. HIGH PRESSURE HYDRAULIC FLUID CAN CAUSE INJURY TO PERSONS.
(8) Supply 100 +/-25 psi to the left hydraulic system with a hydraulic ground cart (AMM 29-11-00/201).
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S 722-089
(9)
For the retract fuse, put the control lever for the landing gear on the First Officers' instrument panel, P3, in the UP position to set the fuse.
(a)
After the fuse sets, or closes, increase the applied pressure to 3000 psi and hold it for 5 minutes.
(b)
Make sure the leakage from the fuse port is not more than one drop per minute for the last 3 minutes.
(c)
Reduce hydraulic pressure to 100 +/- 25 psi in the left hydraulic system.
S 722-079
(10)
For the extend fuse, put the control lever for the landing gear on the First Officers' instrument panel, P3, in the DN position to set the fuse.
(a)
After the fuse sets, or closes, increase the applied pressure to 3000 psi and hold it for 5 minutes.
(b)
Make sure the leakage from the fuse port is not more than one drop per minute for the last 3 minutes.
S 862-082
(11)
Put the control lever for the landing gear on the First Officers' instrument panel, P3, in the OFF position.
S 862-083
(12)
Remove the pressure from the left hydraulic system
(AMM 29-11-00/201).
S 422-096
(13)
Disconnect the temporary hydraulic hose and connect the hydraulic line.
(14)
Pressurize the left hydraulic system (AMM 29-11-00/201).
S 712-046
(15)
Move the control lever to the DN position and monitor the hydraulic lines as follows:
(a)
Make sure the flexible hydraulic lines connected to the truck positioner actuator move when the control lever is moved to DN (Fig. 201).
D.
Do these Steps to Make sure the Fuse in the Gear Retraction Circuit in the Right Wheel Well is not closed:
S 862-045
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S 862-047
WARNING: MAKE SURE THAT THE DOWNLOCKS ARE INSTALLED IN ALL OF THE
_______ LANDING GEAR BEFORE YOU MOVE THE CONTROL LEVER. WITHOUT THE DOWNLOCKS, THE LANDING GEAR CAN RETRACT AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
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本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 2(73)
