32-43-01
 ALL  ú ú 01 Page 505 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 4)  Move thrust lever No. 2 rearward and make sure the brake pressure remains at less than 100 psi.
 S 865-021
 (4)  
Release the ABS button on the front of the antiskid control unit.

 S 715-022

 (5)  
After 5 seconds, push the left brake pedal.

 (a)  
Make sure the AUTOBRAKE DISARM light and the ABS LED stay on and do not flash.

 S 865-023
 (6)  
Turn the autobrake selector switch on the P2 panel to the OFF position.

 G.  
Put the System back to its Usual Condition

 S 845-024
 (1)  
Remove the pressure gages from the brake lines.

 S 845-020

 (2)  
Set the parking brake.

 S 225-024

 (3)  
Do a check on the brake bleed points for leaks.

 S 845-021

 (4)  
Close the AUTOSLAT circuit breakers on the P6 panel.

 S 845-022

 (5)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 (6)  
Remove hydraulic power if it is not necessary (AMM 29-15-00/201).

 S 845-023
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-43-01
 ALL  ú ú 02 Page 506 ú Nov 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 AUTOBRAKE SHUTTLE VALVE - REMOVAL/INSTALLATION
______________________________________________
 1.  General
 A.  This procedure installs the autobrake shuttle valves. The valves are found on the aft bulkhead of the wheel well of the main landing gear.
 TASK 32-43-26-004-001
 2.  Autobrake Shuttle Valve Removal (Fig. 401)_______________________________
 A.  References
 (1)  
29-15-00/201, Hydraulic System

 (2)  
32-00-01/21, Ground Locks

 B.  
Access

 (1)  
Location Zone
 101 Control Cabin - Left
 102 Control Cabin - Right
 216 Left Main Wheel Well
 217 Right Main Wheel Well

 C.  
Prepare for Removal

 S 844-002
 (1)  
Make sure you install the ground locks in all the landing gear (Ref 32-00-01/201).

 S 844-003

 (2)  
Put chocks in their position on the wheels and release the parking brake.

 S 844-004

 (3)  
Remove the pressure from hydraulic system A and system B (Ref 29-15-00/201).

 S 844-005

 (4)  
Slowly operate the brakes 12 times to remove the hydraulic pressure in the brake accumulator (or until the brake accumulator gage does not show a pressure drop with each brake operation).

 S 844-006

 (5)  
Open the circuit breaker, AUTOBRAKE CONTROL, on the P6 Panel and attach a DO-NOT-CLOSE tag.

 D.  
Remove Autobrake Shuttle Valve

 (1)  
Disconnect the electrical connector from the switch on the valve.

 (2)  
Disconnect the hydraulic lines.

 (3)  
Remove the unions and the packing.

 S 034-007
 S 034-008
 S 024-010
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-43-26
 ALL  ú ú 01 Page 401 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 844-011
 (4)  
Seal the lines and ports with caps and plugs.

 S 024-012

 (5)  
Hold the valve and remove the three bolts that attach the valve to the mounting bracket.
　
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