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__________________________________
 A.  Procedure
 S 412-053
 (1)  Position gasket and shutter assembly in place and install 12 mountng screws.
 TASK 25-64-05-702-001
 4.  Flight Compartment Smoke Shutter Operational Test (Fig. 201)
_________________________________________________
 A.  Standard Tools and Equipment
 (1)  Spring scale (to measure approximately 10 pounds tension force on the tee handle)
 B.  Access
 (1)  Location Zones
 221 Control Cabin, Left
 222 Control Cabin, Right

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747-400
MAINTENANCE MANUAL

Flight Compartment Smoke Shutter
Figure 201 (Sheet 1)

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747-400 MAINTENANCE MANUAL
SMOKE SHUTTER
CONTROL ROD
INTERCOSTAL
FUSELAGE
MUFFLER
A
FWD LEVER
LOCKNUT (2 LOCATIONS)
BELLCRANK
A
CABLE
BRACKET
D
BELLCRANK
CABLE
CONTROL ROD
3.01 |0.07 INCHES
OUTBOARD FACE OF THE STRINGER S-O
OUTBD STRINGER S-O (REF)
FWD
A-A
Flight Compartment Smoke Shutter
Figure 201 (Sheet 2)

A64844
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747-400 MAINTENANCE MANUAL
 C. Procedure
 S 212-002
 (1)  
Push aft on the tee handle until it stops.

 S 482-003

 (2)  
Attach the spring scale to the tee handle.

 S 222-004

 (3)  
Measure the force to move the tee handle forward with the spring scale.

 NOTE: The force must not be more than 10 pounds.
____
 (a)  If the force is more than 10 pounds, do this task: "Flight Compartment Smoke Shutter Adjustment".
 S 082-006
 (4)  
Remove the spring scale from the tee handle.

 S 712-007

 (5)  
Push aft on the tee handle until it stops.

 NOTE: The tee handle must move freely in the forward and aft
____
 directions.

 (a)  If the tee handle does not move freely, do this task: "Flight Compartment Smoke Shutter Adjustment".
 S 212-038
 (6)  Make sure the shutter opens and closes correctly.
 TASK 25-64-05-202-047
 5. Smoke Evacuation Shutter Operational Check
___________________________________________
 A. General
 (1)  This task is a visual check to see that the smoke evacuation shutter opens and closes correctly.
 B. Access
 (1)  Location Zones
 221 Control Cabin, Left
 222 Control Cabin, Right

 C. Procedure
 S 982-041
 (1)  
Push the smoke evacuation tee handle completely in.

 (2)  
Make sure the smoke shutter is fully closed.

 S 212-042
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747-400 MAINTENANCE MANUAL
 S 982-046
 (3)  
Pull the smoke evacuation tee handle completely out.
　
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