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A
747-400
MAINTENANCE MANUAL
Flight Compartment Smoke Shutter
Figure 201 (Sheet 1)
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A
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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