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4. Open and collar the following circuit breakers on the overhead circuit breaker panel P1l:
LDG GEAR AUTOBK ANTISKID TEST IND 1
LDG GEAR AUTOBK ANTISKID TEST IND 2
WARNING: DOOR LOCKS MUST BE PROPERLY INSTALLED PRIOR TO ACCESS TO AUTOBRAKE MODULE (AMM 32-00-15). RAPID ACTION OF DOORS MAY INJURE PERSONNEL OR DAMAGE EQUIPMENT IF LOCKS ARE NOT PROPERLY INSTALLED.
5. Locate the autobrake valve module in the left main gear wheel well on the forward bulkhead.
6. Remove, cap, and stow four electrical connectors D2668, D2670, D2672, and D2674.
7. Perform step A) or step B).
NOTE: The autobrake valve module may be deactivated and left in place, or it can be removed. Interconnection between the brake and return lines, either through the valve or interconnect tube, is required to prevent leaks.
A. To disable the autobrake valve module in place:
Disconnect and cap supply pressure hydraulic line (271N6441-1006) at module (AMM 32- 42-09) with BAC P20AU8J, K or S.
Plug the valve pressure port.
B. To remove the autobrake valve module:
Remove the autobrake valve module (AMM 32-42-09).
Cap the supply pressure hydraulic line (271N6441-1006) with BAC P20AU8J, K or S (AMM 32-42-09).
Interconnect the brake and return lines with a suitable section of tubing or flexible hose (AMM 20-10-09)
8. Close the following circuit breakers on the P1l panel:
A. LDG GEAR AUTOBK ANTISKID TEST IND 1
B. LDG GEAR AUTOBK ANTISKID TEST IND 2
Restore right hydraulic system power (AMM 29-11-00) and check for leaks.
Restore the airplane to its normal configuration.
SUPPLY Pressure Hydraulic Line
(271N6441-1006)
AUTOBRAKE MODULE INSTALLATION
REPAIR INTERVAL NUMBER INSTALLED
ITEM NUMBER REQUIRED FOR DISPATCH
REMARKS OR EXCEPTIONS
32-44-3 PARK BRAKE Light C 1 0 (M+P) May be inoperative provided:
Parking brake valve operates normally, and
Antiskid light is verified to operate normally once each flight day.
C 1 0 (O) May be inoperative provided antiskid inoperative decrements by Runway Performance
Software (Finscap) for takeoff and by OM-B for landing are applied.
C 1 0 (O) May be inoperative provided EICAS
Advisory message PARKING BRAKE is verified to operate normally.
EICAS STATUS MESSAGES
None
PLACARD
Park brake indicator light on quadrant stand -PARK BRAKE LIGHT INOP
Airplane flight log as appropriate - ANTISKID INOP MAINTENANCE (M)
1. To verify antiskid light monitor is operational:
Provide electrical power to the hydraulic brake and parking brake systems. Provide right hydraulic system pressure.
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