S 712-015
 (9)  
Do the test of the spoiler operation.

 (a)  
Move the thrust levers 1 or 3 forward of the 27-degree forward thrust (23.2 degrees Thrust Resolver Angle (TRA)).

 (b)  
Put the speed brake lever in the DOWN position. 1) Make sure that all spoilers are in the down position.

 (c)  
Put the speed brake lever in the FLIGHT position. 1) Make sure that spoilers No. 3, 4, 9 and 10 extend to approximately the 45-degree position.

 2)  Make sure that spoilers No. 5 thru 8 extend to approximately the 20-degree position.

 (d)  
Put the speed brake lever in the UP position. 1) Make sure that spoilers No. 1, 2, 11 and 12 extend to the 45-degree position.

 2)  Make sure that spoilers No. 5 thru 8 extend to the 45-degree position.

 (e)  
Turn the aileron control wheel clockwise and counterclockwise. 1) Make sure the spoilers do not extend more.

 (f)  
Put the speed brake lever in the DOWN position. 1) Make sure that all spoilers fully retract.

 S 712-016
 (10)
 Do this task:  "Automatic Speed Brake Arm Switch Operational Test" (AMM 27-62-10/401).

 S 862-017

 (11)
 Do this task: "Remove Hydraulic Power" (AMM 29-11-00/201).

 S 092-018
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (12) Do this task:  "Wing Landing Gear Door Lock Removal" (AMM 32-00-30/201).
 TASK 27-62-03-102-019
 5.  Clean and Lubricate Speed Brake Mechanism
_________________________________________
 A.  Standard Tools and Equipment
 (1)  
Nonmetallic bristle brush

 B.  
Consumable Materials

 (1)  
B00722 Solvent- P-D-680, Type II

 (2)  
D00013 Grease - MIL-G-23827

 C.  
References

 (1)
AMM 25-59-01/401, Main Deck Compartment Cargo Lining Panel

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A
747-400
MAINTENANCE MANUAL

 D.  Access
 (1)  
Location Zone
 211, 212 Passenger Cabin - Nose to First Door

 E.  
Procedure

 S 012-046
 (1)  
Remove the ceiling lining panel on the left side at station 325 (AMM 25-59-01/401).

 S 862-021

 (2)  
Put the speed brake lever in the DOWN position.

 S 112-022

 (3)  
Clean the speed brake mechanism:

 WARNING: DO NOT GET THE SOLVENT IN YOUR MOUTH OR EYES, OR ON YOUR
_______ SKIN. DO NOT BREATHE THE SOLVENT FUMES. KEEP THE SOLVENT AWAY FROM SPARKS, FLAME, AND HEAT. THE SOLVENT IS POISONOUS AND FLAMMABLE WHICH CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (a)  
Apply the solvent to the mechanism and the locking arm shoes.

 (b)  
Clean off the dirt from the mechanism.

 (c)  
Dry the speed brake mechanism with a clean cloth.

 S 862-023
 (4)  
Put the speed brake lever in the UP position.

 S 112-024

 (5)  
Clean the speed brake mechanism again.

 S 862-025

 (6)  
Put the speed brake lever in the DOWN position.

 S 642-038

 (7)  
Grease the speed brake mechanism:

 (a)
Open this circuit breaker and attach a DO-NOT-CLOSE tag:

 1)  P7, Overhead Circuit Breaker Panel a) 7G6, SPEED BRAKE AUTO CONT
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 (b)
　
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