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A
747-400
MAINTENANCE MANUAL

QUICK-RELEASE FASTENER (EXAMPLE)
SILL ROLLER ASSEMBLY
END LOCK
FLOOR RECESS
SILL ROLLER ASSEMBLY
A
CASTER
(8 LOCATIONS)

QUARTER-TURN FASTENER (3 LOCATIONS)
CASTER TRAY (EXAMPLE)
B
QUARTER-TURN FASTENER (3 LOCATIONS)
ROLLER (8 LOCATIONS)
ROLLER TRAY (EXAMPLE)
C
Main Deck Cargo Compartment Cargo Handling Equipment Figure 1 (Sheet 4)
C85948
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 25-57-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
ADJUSTABLE

Main Deck Cargo Compartment Cargo Handling System
Figure 1 (Sheet 5)

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C85953
A

747-400 MAINTENANCE MANUAL 
RETRACTABLE GUIDE RAIL DSEE 2 
P1A  P2A  P2B  GUIDE RETRACTABLE 

VERTICAL RESTRAINT
LIFTED POSITION
FIXED GUIDE
LOWERED POSITION
RETRACTABLE GUIDE RAIL 2 D
2 FOR P1A,P2A, AND P2B PALLET POSITION
Main Deck Cargo Compartment Cargo Handling SystemFigure 1 (Sheet 6)
C85956
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

ROLLER 
ROLLER SHAFT  OR END STOP END LOCK 
FWD  LEVER (EXAMPLE) SHEAR PLUNGER  (EXAMPLE) LOCK/STOP ROLLER TRAY F
END LOCK 
END STOP 
LOCK TRAY G 

AFT STOP TRAY H
Main Deck Cargo Compartment Cargo Handling Equipment
Figure 1 (Sheet 7)

C85960
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

SIDE LOCK  SIDE LOCK 
(FOR P2A,P2B PALLETS)  (FOR P2B PALLET) 
I  J 

END FITTING
PARK RAIL SUPPORT
GUIDE RAIL 
K PARK RAIL SUPPORT 

Main Deck Cargo Compartment Cargo Handling System
Figure 1 (Sheet 8)

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C85965
BUMPER NOSE RETRACTABLE  A 747-400 MAINTENANCE MANUAL LATCH 
TRACK (REF) 
ABSORBERS SHOCK 
CARRIAGE RETRACTABLE CENTERLINE BUMPER L 
BUMPER 
ABSORBERS SHOCK  VERTICAL RESTRAINT LIP (SWIVELING) 
FIXED CENTERLINE BUMPER M 
SIDE LOCK TIEDOWN FITTING 
INBD 
TIEDOWN FITTING  SIDE GUIDE RAIL N 
Main Deck Cargo Compartment Cargo Handling System Figure 1 (Sheet 9) 

C85972
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