S 866-016
(34)
Close the door, but do not close the master latch lock handle.
S 726-033
(35)
Do a check of the master latch lock mechanism.
(a)
Use a spring scale to push the external master latch lock handle to the closed and latched position.
(b)
Make sure the force you measure is not more than 45 pounds (Detail B).
(c)
Use a spring scale to push the internal master latch lock handle to the closed and latched position.
(d)
Make sure the force you measure is not more than 70 pounds (Detail B).
(e)
Make sure the pressure relief doors move correctly when you move the master latch lock handle.
S 826-017
(36) Adjust the master latch lock mechanism if it is necessary (Ref 52-32-00/501).
TASK 52-32-00-706-018
3. Do a Check of the Side Cargo Door Lift Mechanism________________________________________________
A. Standard Tools and Equipment
(1)
Torque Wrench - Capable of 80 pound-inches
B.
References
(1)
52-32-00/001, Side Cargo Door
(2)
IPC 52-32-02 Fig 1
(3)
SSM 52-32-01
(4)
WDM 52-32-11, 52-32-12
C.
Access
(1)
Location Zone
261 Main Deck STA 1720 To STA 2040, LH
(2)
Access Panels
836L Door, Main Deck Cargo
D.
Procedure
S 866-019
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE AWAY FROM THE DOOR AND
_______ THE DOOR OPENING WHEN YOU OPERATE THE DOOR. FAILURE OF THE LIFT MECHANISM CAN CAUSE THE DOOR TO CLOSE QUICKLY WHICH CAN CAUSE INJURY OR DAMAGE.
(1) Electrically open the door until it is one foot from the door closed position (Ref 52-32-00/001).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-32-00
ALL ú ú 03 Page 614 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 496-020
(2)
Put the torque wrench in the manual drive socket of the lift actuator.
S 986-021
(3)
Turn the internal manual drive 50 turns counterclockwise.
S 716-022
(4)
Make sure the two rotary actuators move to open the door at the same time.
S 986-023
(5)
Turn the lift actuator 50 turns clockwise.
S 716-024
(6)
Make sure the two rotary actuators move to close the door at the same time.
S 866-025
(7)
Close the side cargo door electrically (Ref 52-32-00/001).
TASK 52-32-00-206-031
4. Do a check of the Side Cargo Door Electrical Components and Circuitry.________________________________________________________________________
A. Standard Tools and Equipment
(1)
Torque wrench (with dial indicator) - 0-25 pound-inch range
B.
References
(1)
52-32-00/001, Side Cargo Door
C.
Access
(1)
Location Zone
261 Main Deck STA 1720 To STA 2040, LH
(2)
Access Panels
261AL Access Door, Cargo Door Switch
836L Door, Main Deck Cargo
D.
Procedure
S 726-051
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE AWAY FROM THE DOOR AND
_______ THE DOOR OPENING WHEN YOU OPERATE THE DOOR. FAILURE OF THE LIFT MECHANISM CAN CAUSE THE DOOR TO CLOSE QUICKLY WHICH CAN CAUSE INJURY OR DAMAGE.
CAUTION: TO ENSURE PROPER CHECK, THE FOLLOWING REQUIREMENTS APPLY: AIRPLANE SHOULD BE ON ITS GEAR: TAIL JACK SHOULD NOT BE INSTALLED, AND THE AFT BODY SHOULD NOT BE LOADED WITH CARGO.
(1)
Do a check of the lift actuator.
(a)
Open the door electrically (Ref 52-32-00/001).
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