(e)  Turn the antiskid transducer shaft at approximately 600 RPM and do these checks:
 NOTE: Use the Spinup Equipment Tool if it is available.
____
 1)  Look at the tandem brake for the wheel with the transducer that is turned. The tandem brake for each wheel is specified in the chart below:
 ~..........................
 | WHEEL/TANDEM BRAKE CHART |
 ~.........…..........................….........
 | WHEEL NO. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 | TANDEM BRAKE | 3 | 4 | 1 | 2 | 7 | 8 | 5 | 6 |
 ~...…..............…...…...…...….......…...…...…...…...
 | WHEEL NO. | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
 | TANDEM BRAKE | 11 | 12 | 9 | 10 | 15 | 16 | 13 | 14 |
 2..............…....…....…....…....…....…....…....…....1

 2)  Make sure the tandem brake is released.
 NOTE: Use the indication of the pressure gage at this
____ brake for the indication of when the brake is released. The brake is released when the pressure gage shows 200 psig or less.
 3) Make sure all other brakes are set.
 4) Quickly stop the transducer from its movement.
 5) Make sure the tandem brake is set and stays set.

 (f)  Again, turn the antiskid transducer shaft at approximately 600 RPM and do these checks: 1) Look at the brake on the same axle as this transducer. 2) Make sure the brake is set. 3) While you look at the brake, quickly stop the transducer
 from its movement.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 4) Make sure the brake releases, then is set and stays set.
 ~................................................................. | TABLE 501 | | WHEEL NUMBERS | ...................................................................
 |  |
 |  ~.........  FWD  ~.........  |
 |  | 1 | 2 |  ≥  | 13 | 14 |  |
 |  ...........  |  ...........  |
 |  | 3 | 4 |  |  | 15 | 16 |  |
 |  2....…....1  |  2....…....1  |
 |  L WING GEAR  R WING GEAR  |
 |
 |  ~.........  ~.........  |
 |  | 5 | 6 |  | 9 | 10 |  |
 |  ...........  ...........  |
 |  | 7 | 8 |  | 11 | 12 |  |
 |  2....…....1  2....…....1  |
 |  L BODY GEAR  R BODY GEAR  |

 2.................................................................1
 (g)  Do these steps to put the airplane back to its usual condition: 1) Release the parking brake. 2) Close this circuit breaker on the P6 panel:
 a) 6L18 PARK BRAKE
 3) Set the parking brake.
 4) Remove the power from hydraulic system No. 4

 (AMM 29-11-00/201). 5) Do these steps to install each hubcap (Fig 502): a) If necessary, put the hubcap in position over the end of the axle.
 b)  If necessary, turn the hubcap lightly back and forth until the transducer coupling in the hubcap engages the transducer dog.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400
MAINTENANCE MANUAL

 c) Turn the hubcap until the pin in the hubcap aligns with the hole in the wheel. Push the hubcap onto the wheel. d) Put the clamp that holds the hubcap to the wheel into its installed position. e) Tighten the fastener on the clamp to 35-40 pound-inches.
 S 735-260
 (3)  
Do these steps to do a test of the primary and alternate position switches for the landing gear control handle, S753A and S753B:

 (a)  
Move the landing gear control handle to the OFF Position.

 (b)  
　
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