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25-53-15
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A
747-400
MAINTENANCE MANUAL
980 STA
BALL TRANSFER PANEL (EXAMPLE)
SEE A
STA 680
STA
560
STA
480
FWD
____FORWARD COMPARTMENT IS SHOWN,
NOTE:
AFT COMPARTMENT IS EQUIVALENT.
Ball Transfer Panel Installation
Figure 401 (Sheet 1)
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L46333
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747-400
MAINTENANCE MANUAL
BALL TRANSFER PANEL (EXAMPLE)
FWD
BONDING JUMBER INSTALLATION (EXAMPLE)
SEE B
BOLT AND WASHER LOCATIONS (EXAMPLE)
BALL TRANSFER PANEL (EXAMPLE)
A
NOTE: FOWARD COMPARTMENT IS SHOWN, AFT COMPARTMENT IS EQUIVALENT.
Ball Transfer Panel Installation
Figure 401 (Sheet 2)
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747-400
MAINTENANCE MANUAL
B
____THIS IS A TYPICAL BONDING JUMPER
NOTE: INSTALLATION. SOME INSTALLATIONS WILL VARY.
Ball Transfer Panel Installation
Figure 401 (Sheet 3)
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747-400 MAINTENANCE MANUAL
DOORSILL ROLLER - REMOVAL/INSTALLATION
______________________________________
1. General_______
A. There are two tasks in this procedure. The first task is the removal of the doorsill rollers in the forward and aft cargo compartments. The second task in the installation of the doorsill rollers.
B. There are six doorsill rollers in the door opening of each cargo
compartment.
TASK 25-53-16-004-001
2. Doorsill Roller Removal (Fig. 401)_______________________
A. Special Tools and Equipment
(1) 3PRE65B00040 Lower Cargo Door Opening Safety Barrier
B. References
(1)
24-22-00/201, Manual Control
(2)
52-34-00/001, Forward/Aft Cargo Doors
(3)
IPC 25-53-16
C. Access
(1) Location Zone
100 Lower Half of Fuselage
D. Prepare for the Removal
S 864-024
(1)
Supply electrical ground power (Ref 24-22-00/201).
S 014-002
(2)
Open the cargo compartment door (Ref 52-34-00/001).
S 494-025
WARNING: BE CAREFUL WHEN YOU ARE NEAR THE OPENING OF THE CARGO
_______ COMPARTMENT DOOR. INSTALL A SAFETY BARRIER (3PRE65B00040) ACROSS THE OPENING OF THE DOOR UNLESS AN ACCESS STAND IS AT THE DOOR. INJURY TO PERSONS CAN OCCUR IF THEY FALL THROUGH THE OPENING OF THE DOOR.
(3) Install a safety barrier (3PRE65B00040) across the opening of the cargo compartment door if it is necessary.
E. Remove the Doorsill Roller
S 034-026
(1) Remove the sealant from the bolts which attach the doorsill roller to the structure.
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