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 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 | 2..............…....…....…....…....…....…....…....…....1
 ~...................................................... | WHEEL/TANDEM BRAKE CHART | ........................................................ | 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.
 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.
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.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 (h) (i) (j) (k)  4) Make sure the brake releases, then is set and stays set.Release the parking brake.Remove the DO-NOT-CLOSE tag and close this circuit breaker: 1) P6 Main Power Distribution Panel a) 6L18, PARK BRAKESet the parking brake.Remove the pressure from hydraulic system No. 4 (AMM 29-11-00/201).
 S 214-024
 (5)  Examine the drive couplings in the hubcap to make sure they are correctly installed and in good condition. (a) If they are not, replace them as necessary (AMM 32-42-03/401).
 S 414-022
 (6)  Do these steps to install the hubcap assembly (2): (a) Put the hubcap (2) in its position on the end of the axle and turn it lightly, in one direction and then the other, until the transducer coupling in the hubcap engages with the transducer dog (11) on the transducer assembly. (b) Turn the hubcap until the pin in the hubcap falls into the mating hole in the wheel. (c) Install the hubcap clamp (1) and tighten to 35-40 pound-inches.
 S 864-031
 (7)  Remove the electrical power (AMM 24-22-00/201).
 S 094-020
 (8)  Do this task: "Removal of the Door Locks for the Wing Landing Gear" (AMM 32-00-30/201).
 S 094-021
 (9)  Do this task: "Removal of the Door Locks for the Body Landing Gear" (AMM 32-00-30/201).

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 AUTOBRAKE SELECTOR SWITCH - REMOVAL/INSTALLATION
________________________________________________
 1.  General_______
 A.  This procedure contains the removal and installation tasks for the autobrake selector switch.
 B.  The autobrake selector panel is removed when a malfunction of the brake control system is isolated to the autobrake selector switch, with the use of the CMC. The removal task removes the autobrake selector panel from the Pilots' Control Stand, P8, and then remove the autobrake selector switch from the panel. The installation task installs the switch on the panel, and then installs the panel in P8.
 C.  An installation test is necessary after you complete the installation.
 TASK 32-42-10-014-001
 2.  Autobrake Selector Switch - Removal___________________________________
 A.  Access
 (1)  Location Zones 222 Control Cabin, RH 118 Elecrical & Electronics Compartment, R.H.
 (P180 DC Power Distribution Panel)
　
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