Then move the Bulk door manually inboards until the hook engages with the hook arrester of the fuselage crossbeam. This operation safeties the Bulk door in its fully open position.
B. Close Mode
To close the Bulk door, press the button of the external door handle. This releases the handle lock mechanism and the external door handle moves from the recess. This position makes sure that the external door handle can operate the locking shaft.
To release the opened Bulk door, put the external door handle to its "OPEN" position. This movement causes the lever assy to operate the push rod which turns the locking shaft. Thus, the spring unit operates the hook which disengages from the hook arrester. The balance mechanism prevents that the Bulk door falls down if it is not safetied.
Pull the Bulk door down into the door opening until it is in line with the fuselage contour. Put the external door handle to the "LOCKED" position. This operation moves the locking shaft so that the front and rear barrel locks engage with their latch spigots. During this movement, the rear barrel lock operates the lever assy and its related target operates the proximity switch 50WV. This operation cancels the warning of the ECAM system in the cockpit.
Push the external door handle into its recess when the Bulk door is closed and locked.
R **ON A/C 106-149, 221-221, 224-224, 228-228,
A. Open Mode
To open the permanently blocked Bulk door for the maintenance, remove the screw from the external door handle. Then press the button of the external door handle to release the handle lock mechanism. This causes the external door handle to move from the recess so that it can operate the locking shaft.
R 1EFF : 004-049, 055-099, 101-149, 221-221, 1 52-33-00Page 21 1224-224, 228-228, 1May 01/05 1 1 1CES 1 To unlock the closed Bulk door, put the external door handle to its "OPEN" position. This movement causes the lever assy to operate the pushrod which turns the locking shaft. Thus, the front and rear barrel locks disengage from their latch spigots and the Bulk door is released.
The disengaged rear barrel lock does not operate the spring-loaded lever assy of the latch spigot. This causes its related target to operate the proximity switch 50WV which sends a signal to the ECAM system. Thus, the ECAM system gives a warning in the cockpit to tell that the Bulk door is not locked.
Move the Bulk door inboard until the latch spigots on the fuselage frame come in view. The balance mechanism holds the Bulk door in this position.
Put the external door handle in the "LOCKED" position again. This moves the locking shaft which operates the spring rod to safety the overcenter position of the hook. After this operation, push the external door handle into its recess again to prevent posible damage during the onload procedure.
Then move the Bulk door manually inboards until the hook engages with the hook arrester of the fuselage crossbeam.
B. Close Mode
To close the Bulk door, press the button of the external door handle. This releases the handle lock mechanism and the external door handle moves from the recess. This position makes sure that the external door handle can operate the locking shaft.
To release the opened Bulk door, put the external door handle to its "OPEN" position. This movement causes the lever assy to operate the push rod which turns the locking shaft. Thus, the spring unit operates the hook which disengages from the hook arrester. The balance mechanism prevents that the Bulk door falls down if it is not safetied.
Pull the Bulk door down into the door opening until it is in line with the fuselage contour. Put the external door handle to the "LOCKED" position. This operation moves the locking shaft so that the front and rear barrel locks engage with their latch spigots. During this movement, the rear barrel lock operates the lever assy and its related target operates the proximity switch 50WV. This operation cancels the warning of the ECAM system in the cockpit.
Push the external door handle into its recess when the Bulk door is closed and locked. Install the screw to attach the external door handle in the recess of the handle housing permanently.
R 1EFF : 106-149, 221-221, 224-224, 228-228, 1 52-33-00Page 22 1 1 May 01/05 1 1 1CES 1
BULK CARGO COMPARTMENT DOOR - DEACTIVATION/REACTIVATION
_______________________________________________________ TASK 52-33-00-040-001 Operation of Bulk Cargo Compartment Door with an inoperative Balance Mechanism
1. Reason for the Job
__________________
Refer to the MMEL TASK: 52-33-01
Bulk Cargo
Cargo Door Balance Mechanism
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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本文链接地址：A320飞机维护手册 AMM DOORS 舱门6(26)
