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D. Prepare to Install the Door Locks.
S 492-012
(1)
Make sure the downlocks are installed on the nose and main landing gear (Ref 32-00-20).
S 862-013
(2)
Supply electrical power (Ref 24-22-00).
S 012-014
WARNING: MAKE SURE THERE ARE NO PERSONS OR EQUIPMENT AROUND THE NOSE OR
_______ MAIN LANDING GEAR BEFORE YOU OPEN THE DOORS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3) Open the ground control access door, 198PR (Ref 06-41-00), to get access to the electrical service panel, P72, for the main wheel well (Fig. 201).
S 862-016
CAUTION: DO NOT HOLD THE "ALL DOORS OPEN" SWITCHES IN THE "ARM" AND
_______ "OPEN" POSITIONS FOR MORE THAN TWO (2) SECONDS. IF YOU HOLD THE SWITCHES TOO LONG, THE POWER PACK CAN BECOME TOO HOT, AND CAN CAUSE THE ALTERNATE EXTENSION SYSTEM TO NOT OPERATE.
(4) At the same time, move the ALL DOORS OPEN ARM switch to the ARM position and the ALL DOORS OPEN switch to the OPEN position.
NOTE: The power pack releases the doors but does not put the doors
____
in the open position.
(a)
The main and nose landing gear doors will come open.
(b)
If it is necessary, manually put the doors to the fully open position.
S 862-017
WARNING: MAKE SURE THE PRESSURE IS REMOVED FROM THE LEFT AND RIGHT
_______ HYDRAULIC SYSTEMS BEFORE YOU GO INTO THE WHEEL WELLS TO INSTALL THE DOOR LOCKS. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR IF THE SYSTEM IS PRESSURIZED.
(5) Remove the pressure from the left and right hydraulic systems and reservoirs (Ref 29-11-00).
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E. Install the Door Locks.
S 842-018
(1) Make sure the L and R MAIN GEAR DOOR UNSAFE lights in each main wheel well are off. The lights are on the keel beam.
NOTE: The door safety valve is in the OFF (or SAFETY) position when
____
the safety light is off.
S 842-019
(2)
Push the MAIN GEAR DOOR UNSAFE LT PTT switch, on the P72 panel, to make sure the DOOR UNSAFE lights come on.
S 842-061
(3)
Release the switch.
S 842-062
(4)
Make sure the lights go off.
S 412-023
(5)
Close the access door 198PR (Ref 06-41-00).
S 492-025
(6)
Install the door locks for the main landing gear (2 locations) (Fig. 203).
S 842-026
(7)
Make sure the NOSE GEAR DOOR UNSAFE light, on the front wall of the nose wheel well, is off.
S 842-027
(8)
Push the NOSE GEAR DOOR UNSAFE LT PTT switch on the left equipment panel, P63, for the nose landing gear.
(9)
Make sure the DOOR UNSAFE light comes on.
(10)
Release the switch.
(11)
Make sure the light goes off.
(12)
Install the door lock for the nose landing gear (Fig. 202).
S 842-056
S 842-057
S 842-058
S 492-028
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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 1(20)
