EFFECTIVITY BEJ ALL  52-34-00 
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D633W101-BEJ  Jan 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -LATCH MANUAL DRIVE

Purpose
The latch manual drive lets you manually unlatch and latch the cargo door.
Physical Description
The manual drive has these components:
*
Two gear boxes

*
Two drive shafts

*
A 3/8 inch drive socket

*
A latch power unit connection.

Functional Description
The latch manual drive receives torque through the drive socket located in the lock handle housing. Torque goes from the sockets, through the gear boxes and shafts, to the latch power unit.
EFFECTIVITY BEJ ALL  52-34-00 
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D633W101-BEJ  Sep 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -LATCH MANUAL DRIVE

EFFECTIVITY BEJ ALL  52-34-00 
Page 25 
D633W101-BEJ  May 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -LATCH MECHANISM

Purpose
The latch mechanism transmits torque from the latch power unit to the latch cams and pull-in hooks.
Physical Description
The mechanism has these components:
*
Torque tubes

*
Push rods

*
Bellcranks

*
Drive links

*
Pull-in hooks

*
Main latch cams.

Functional Description
The torque tubes transmit torque directly to the pull-in hooks. The push rods, bellcranks, and drive links transmits torque from the torque tube to the latch cams.
EFFECTIVITY BEJ ALL  52-34-00 
Page 26 
D633W101-BEJ  Sep 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -LATCH MECHANISM

EFFECTIVITY BEJ ALL  52-34-00 
Page 27 
D633W101-BEJ  Jan 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -PULL-IN HOOKS AND PINS

Purpose
The pull-in hooks and pins pull the door into the position where the cargo door can latch.
Location
The pull-in hooks are on the ends of the latch torque tubes. The pins are on the forward and aft sides of the door cutout.
Functional Description
The pull-in function begins when the door is lowered fully. In this position, the open end of the hook is around the pin. The latch power unit turns the pull-in hooks. As the hook turns around the pin, it pulls the door into the position where the latch cams can turn around the latch pins.
EFFECTIVITY BEJ ALL  52-34-00 
Page 28 
D633W101-BEJ  Jan 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -PULL-IN HOOKS AND PINS

EFFECTIVITY BEJ ALL  52-34-00 
Page 29 
D633W101-BEJ  Jan 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -LATCH CAMS AND LATCH PINS

Purpose
The latch cams and latch pins hold the cargo door closed.
Location
The eight main latch cams are in pairs along the bottom of the door. The eight main latch pins are along the bottom of the door cutout.
Functional Description
Linkage connects the latch cams to latch mechanism torque tubes. Torque from the power unit turns the latch cams around the latch pins. In the rotated position the cams cannot move away from the pins. This latches the door.
EFFECTIVITY BEJ ALL  52-34-00 
Page 30 
D633W101-BEJ  Jan 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -LATCH CAMS AND LATCH PINS

EFFECTIVITY BEJ ALL  52-34-00 
Page 31 
D633W101-BEJ  Jan 05/2002 

FORWARD LARGE CARGO DOOR SYSTEM -LOCK HANDLE MECHANISM

Purpose
The lock handle controls the movement of the lock mechanism.
Physical Description
The lock handle mechanism has these components:
　
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