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A

747-400
MAINTENANCE MANUAL

LOCKHEAD 
EXTENDED 
LATCH 
PAWL 
LATCH 
PAWL 
SPRING 

SINGLE PALLET LOCK DOUBLE PALLET LOCK
(XZ-SINGLE LATCH) (XZ-SINGLE LATCH)

LOCKING 
LOCKING LEVER  LEVER 
LATCH 
LATCH 
RESTRAINT 
RESTRAINT  LIP 
LIP  TENSION 
RETAINER  STUD 

RELEASE LEVER
TENSION STUD
RETAINER
CONTAINER STOP
CONTAINER STOP (EXAMPLE) (EXAMPLE)
Containerized Cargo Restraining System Component Inspection/Check Figure 601 (Sheet 4)
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747-400 MAINTENANCE MANUAL
LOCKHEAD EXTENDED
LOCKING LEVER (2 LOCATIONS)
INDEX
LOCKHEAD EXTENDED
MARKING
RETAINER
LOCKHEAD RETRACTED
DIRECTION
LOCKING LEVER  ARROW
(2 LOCATIONS)
SINGLE PALLET LOCK (EXAMPLE)
INDEX MARKING
DIRECTION
DOUBLE PALLET LOCK
ARROW
(EXAMPLE)
LOCKING LEVER
LOCKING

LATCH
LEVER LATCH
RESTRAINT RESTRAINT
LIP LIP
TENSION RETAINER
STUD
RELEASE LEVER
TENSION RETAINER
STUD
CONTAINER STOP CONTAINER STOP (EXAMPLE) (EXAMPLE)
Containerized Cargo Compartment Restraining System Components Figure 601 (Sheet 5)
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747-400 MAINTENANCE MANUAL
 RETRACTABLE CARGO RESTRAINTS - SERVICING
________________________________________
 1.  General_______
 A.  This procedure has one task. This task gives instructions to clean and lubricate the retractable cargo restraints in the cargo compartments. Unwanted materials can get caught in the restraints which can cause the restraints to operate slowly. It is necessary to keep the restraints free of the unwanted materials to make sure the restraints will operate correctly.
 TASK 25-54-01-603-001
 2.  Retractable Cargo Restraints Servicing______________________________________
 A.  Standard Tools and Equipment
 (1)  Vacuum Cleaner
 B.  Consumable Materials
 (1)  
G00215 Brush - Soft Bristle

 (2)  
G00033 Cheesecloth, BMS 15-5

 (3)  
D00093 Oil - Lubricating, MIL-L-7870

 (4)  
D00068 Oil - Lubricating, PW521B, Type II

 (5)  
B00316 Solvent - Aliphatic Naphtha, TT-N-95, Type I

 C.  Access
 (1)  Location Zone
 100 Lower Half of Fuselage

 D.  Procedure
 S 143-002
 (1)  Use a vacuum cleaner to remove the loose unwanted materials from the restraints if it is necessary.
 S 113-007
 WARNING: OBEY THE INSTRUCTIONS FROM THE INDUSTRIAL HYGIENE, FIRE, AND
_______ SAFETY ORGANIZATIONS FOR THE NECESSARY PROCEDURES AND EQUIPMENT WHEN YOU USE SOLVENTS. DO NOT GET THE SOLVENTS IN YOUR MOUTH OR EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM THE SOLVENTS. USE A PROTECTIVE SPLASH GOGGLE, GLOVES, AND A RESPIRATOR (IN CONFINED AREAS) WHEN YOU USE THE SOLVENTS. KEEP THE SOLVENTS AWAY FROM ALL SOURCES OF IGNITION (HEAT, FLAME, AND SPARKS). THE SOLVENTS YOU USE ARE POISONOUS AND FLAMMABLE. IF YOU DO NOT USE THE CORRECT PROCEDURES AND EQUIPMENT, INJURY TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (2)  Clean the restraints with a cheesecloth or a brush that is moist with the solvent.
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