S 712-024

 (13)
 Do these steps to do a test of the normal brake system operation:

 (a)  
Push the brake pedals to the stops and hold them in this position. 1) Do a check for leaks of hydraulic fluid at each brake

 bleeder valve.
 2) Monitor the indicator on each brake assembly.
 3) Make sure that each brake operated to compress the heat
 stack.
 (b)  
Release the brake pedals. 1) Monitor the indicator on each brake assembly. 2) Make sure that each brake is released.

 (c)  
If a brake did not operate correctly, set the applicable hydraulic fuse again. 1) Get access to the applicable normal antiskid valve module. 2) Hold the fuse handle in the RESET position for 5 seconds

 minimum. 3) Do the normal brake operation test again.
 S 902-025
 (14) If you set a fuse again and the applicable brake does not operate correctly, replace the applicable hydraulic fuse (AMM 32-42-02/201).
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747-400 MAINTENANCE MANUAL
 S 862-026
 (15) Remove the pressure from hydraulic system No. 4 (AMM 29-11-00/201).
 S 862-051
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. 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.
 (16)
 Pressurize hydraulic system No. 1 or 2 (AMM 29-11-00/201).

 S 712-028

 (17)
 Do these steps to do a test of the alternate brake system operation:

 (a)  
Push the brake pedals to the stops and hold them in this position. 1) Do a check for leaks of hydraulic fluid at each brake

 bleeder valve. 2) Monitor the indicator on each brake assembly. 3) Make sure that each brake operated to compress the heat
 stack.
 (b)  
Release the brake pedals. 1) Monitor the indicator on each brake assembly. 2) Make sure that each brake is released.

 (c)  
If a brake did not operate correctly, set the applicable hydraulic fuse again. 1) Get access to the applicable alternate antiskid valve

 module assembly. 2) Hold the fuse handle in the RESET position for 5 seconds minimum. 3) Do the alternate brake operation test again.
 S 902-029
 (18)
 If you set a fuse again and the applicable brakes do not operate correctly, replace the applicable hydraulic fuse (AMM 32-42-02/201).

 H.
Put the Airplane Back to Its Usual Condition

 (1)  
Set the parking brake.

 S 092-052

 (2)  
Do this task: "Removal of the Door Locks from the Wing Landing Gear" (AMM 32-00-30/201).

 S 092-053

 (3)  
Do this task: "Removal of the Door Locks from the Body Landing Gear" (AMM 32-00-30/201).

 S 862-030
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 S 862-032
 (4)  Remove the hydraulic power if it is not necessary (AMM/29-11-00/201).
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 HYDRAULIC BRAKE SYSTEM - ADJUSTMENT/TEST
________________________________________
 1.  General_______
 A.  This procedure has the instructions to do these tasks:
 (1)
Alternate Source Selector Valve - Operational Test
　
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