S 434-011
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A
747-400 MAINTENANCE MANUAL
F. Operational Test
S 864-012
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-013
(2)
Close these circuit breakers and remove the DO-NOT-CLOSE tags:
(a)
On the Auxilary External 2 Power Center-Right panel P715: 1) 715XX, NOSE CARGO DOOR
(b)
On the Power Distribution Center-Right panel P415: 1) 415F16, NOSE CARGO DOOR CONTROL
(c)
On the Nose Cargo Door Power panel H122:
1) 122XX, DOOR LIFT
2) 122XX, PULL UP CAM
3) 122XX, LATCHES 1-4R
4) 122XX, LATCHES 1-4L
5) 122XX, LATCHES 5-8R
6) 122XX, LATCHES 5-8L
S 714-014
(3)
If you did not move the door before the installation of the new drive shaft, make sure the door operates smoothly.
S 824-015
(4)
If you moved the door before the installation of the new drive shaft, do these steps to adjust the linear actuator:
(a)
Move the door until you can install the rig pin ND-3 in the linear actuator from which the drive shaft was not removed (Fig. 401).
(b)
If you can install the rig pin ND-3 in the linear actuator, make sure that the door is in the fully closed position.
(c)
If you cannot install the rig pin ND-3 in the linear actuator, adjust the linear actuator (Ref 52-31-02/401).
G.
Put the Airplane Back To Its Usual Condition.
(1)
Remove electrical power, if it is not necessary (Ref 24-22-00/201).
S 864-016
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A
747-400 MAINTENANCE MANUAL
NOSE CARGO DOOR LATCH ACTUATOR - REMOVAL/INSTALLATION
_____________________________________________________
1. General_______
A. This procedure has two tasks:
(1)
The removal of the latch actuator on nose cargo door
(2)
The installation of the latch actuator on nose cargo door
TASK 52-31-05-004-001
2. Nose Cargo Door Latch Actuator Removal (Fig. 401)______________________________________
A. References
(1)
24-22-00/201, Manual Control
B.
Access
(1)
Location Zone
801 Nose Cargo Door
C.
Prepare For Removal
S 864-004
(1)
Open the nose cargo door to get access to the latch actuator.
S 864-005
(2)
Open these circuit breakers and attach the DO-NOT-CLOSE tags:
(a)
On the Auxilary External 2 Power Center-Right panel P715: 1) 715XX, NOSE CARGO DOOR
(b)
On the Power Distribution Center-Right panel P415: 1) 415F16, NOSE CARGO DOOR CONTROL
(c)
On the Nose Cargo Door Power panel H122: 1) 122XX, DOOR LIFT 2) 122XX, PULL UP CAM 3) 122XX, LATCHES 1-4R 4) 122XX, LATCHES 1-4L 5) 122XX, LATCHES 5-8R 6) 122XX, LATCHES 5-8L
D.
Latch Actuator Removal
S 014-006
(1)
For Latch Actuator 5L or 5R, Remove the rain gutter to get access to the actuator.
S 024-007
(2)
For All Latch Actuators Except 7L and 7R,
Do these steps to remove the latch actuators:
(a)
Disconnect the actuator electrical connector.
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本文链接地址：747-400 AMM 飞机维护手册 舱门 DOORS 2(44)
