(2)  
Access Panel
 315A Access Door
 324DL Inspection Access Panel
 324FL Inspection Access Panel

 C.  
Prepare for the Test

 S 865-017
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 865-018

 (2)  
Make sure EICAS is serviceable (Ref 31-61-00/201).

 S 865-021
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. THE AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (3)  
Supply hydraulic power for hydraulic systems No. 2 and 4
 (Ref 29-11-00/201).

 S 865-022

 (4)  
Set the rudder trim to zero.

 S 495-036
 WARNING:_______MAKE SURE THE NOSE LANDING GEAR IS POINTED FORWARD. IF THE TIRES ARE NOT PARALLEL WITH THE AIRPLANE, THEY CAN TURN QUICKLY WHEN YOU REMOVE THE TOW PIN. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (5)  Install the TOW PIN at the steering metering valve for the nose landing gear (Ref 09-11-00/201).
 NOTE: The nose gear will turn during the rudder operation if you do
____
 not install the TOW PIN.

 D.  Procedure
 S 715-024
 (1)
Do these steps to do a test of the upper power control actuator.

 (a)  
Find the FLT CONTROL HYD POWER switches on the pilot's overhead maintenance panel, P461. 1) Put the No. 4 TAIL switch in the NORM position.

 (b)  
Move the captain's left pedal fully forward and hold it there.

 1)  Make sure the status page of EICAS shows the lower rudder is fully left.
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747-400 MAINTENANCE MANUAL
 2)  Make sure the flight controls maintenance page of EICAS shows the lower rudder is 31.5 +/-1.5 degrees to the left.
 (c)  Move the captain's right pedal fully forward and hold it there. 1) Make sure the status page of EICAS shows the lower rudder is fully right.
 2)  Make sure the flight controls maintenance page of EICAS shows the lower rudder is 31.5 +/-1.5 degrees to the right.
 S 715-037
 (2)
Do these steps to do a test of the lower power control actuator.

 (a)  
Find the FLT CONTROL HYD POWER switches on the pilot's overhead maintenance panel, P461. 1) Put the No. 2 TAIL switch in the NORM position. 2) Put the No. 4 TAIL switch in the SHUTOFF position.

 (b)  
Move the captain's left pedal fully forward and hold it there. 1) Make sure the status page of EICAS shows the lower rudder is fully left.

 2)  Make sure the flight controls maintenance page of EICAS shows the lower rudder is 31.5 +/-1.5 degrees to the left.

 (c)  
Move the captain's right pedal fully forward and hold it there.

 1)  Make sure the status page of EICAS shows the lower rudder is fully right.

 (d)  
Make sure the flight controls maintenance page of EICAS shows the lower rudder is 31.5 +/-1.5 degrees to the right.

 E.  
Put the Airplane Back to Its Usual Condition

 S 795-026
 (1)  
Make sure the power control package and the power control actuators do not have hydraulic leaks.

 S 865-027

 (2)  
Fill the hydraulic reservoirs (Ref 12-12-01/301).

 S 865-028

 (3)  
Find the FLT CONTROL HYD POWER switches on the pilot's overhead maintenance panel, P461.

 (a)  
Put the four TAIL switches in the NORM position.

 S 095-029
 WARNING:_______MAKE SURE THE NOSE LANDING GEAR IS POINTED FORWARD. IF THE TIRES ARE NOT PARALLEL WITH THE AIRPLANE, THEY CAN TURN QUICKLY WHEN YOU REMOVE THE TOW PIN. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (4)  
Remove the TOW PIN from the nose landing gear (Ref 09-11-00/201).

 (5)  
Remove hydraulic power (Ref/29-11-00/201).

 S 865-030
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