B.
Access

 (1)  
Location Zone
 261 Main Deck STA 1720 To STA 2040, LH

 (2)  
Access Panels
 836L Door, Main Deck Cargo

 C.
Procedure

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-32-01
 ALL  ú ú 03A Page 613 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 016-045
 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)  Open the side cargo door for access (Ref 52-32-00/001).
 NOTE: You can operate the door manually or electrically.
____
 S 206-046
 (2)  
Do a check of the lock sectors, torque tubes and other components of the latch lock mechanism for damage, corrosion and other bad conditions

 S 416-047

 (3)  
Close the side cargo door (Ref 52-32-00/001).

 TASK 52-32-01-206-048
 5. Door Latch Mechanism - Inspection/Check
_______________________________________
 NOTE: This is a scheduled maintenance task.
____
 A. References
 (1)  
52-32-00/001, Side Cargo Door

 B.
Access

 (1)  
Location Zone
 261 Main Deck STA 1720 To STA 2040, LH

 (2)  
Access Panels
 836L Door, Main Deck Cargo

 C.
Procedure

 S 016-049
 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)  Open the side cargo door for access (Ref 52-32-00/001).
 NOTE: You can operate the door manually or electrically.
____
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-32-01
 ALL  ú ú 02A Page 614 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 206-050
 (2)  
Do a check of the latch cams, torque tubes and other components of the latch mechanism for corrosion, damage and other bad conditions.

 S 216-078

 (3)  
If the latch pin assemblies (Figure 602-Sheet 2) do not have the pin stop brackets, make sure that the pins protrude (stick out) from the bearing plate side of the latch fittings.

 S 206-051

 (4)  
Do a check of the midspan latch cams for damage, corrosion and other bad conditions.

 S 416-052

 (5)  
Close the side cargo door (Ref 52-32-00/001).

 S 216-079

 (6)  
If the latch pin assemblies (Figure 602-Sheet 2) do not have the pin stop brackets, make sure that the pins protrude (stick out) from the bearing plate side of the latch fittings.

 TASK 52-32-01-206-062
 6.  Inspect the Forward/Aft Cargo Door Lift Mechanism_________________________________________________
 NOTE: This is a scheduled maintenance task.
____
 A. Access
 (1)  
Location Zone 261 Passenger Cabin - Fourth Door to Station 2040, LH

 (2)  
Access Panels
 836L Door, Main Deck Cargo

 B.
Procedure

 S 016-063
 (1)  
Remove the cieling panel inboard of the door hinge.

 (2)  
Open the door.

 S 216-065

 (3)  
Examine the condition of the lift mechanism as follows:

 (a)  
Examine the condition of the lift power unit as follows: 1) Look for corrosion. 2) Look for damage. 3) Look for loose or missing fasteners. 4) Make sure the electrical connectors and associated wiring

 S 866-064
 is satisfactory as follows: a) Look for chafe.
　
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