(c)
Place INBD and OUTBD antiskid switches to ON position.
(2)
Test pressure switch.
(a)
Press-to-test the AUTOBRAKE DISARM light on the autobrake control panel and verify the light illuminates.
(b)
Press-to-test the AUTOBRAKE light on the front of the antiskid control module and verify the light illuminates.
(c)
Place the TEST switch on the front of the antiskid module (E3-2 shelf) to the AUTOBRAKE position. Hold the switch in this position thru step (I).
NOTE: If any of the below steps are not accomplished within the specified time limit, the system will disarm and the test must be restarted with this step.
(d)
Place the AUTOBRAKE selector switch at MIN position.
(e)
Within 15 seconds of the above step, place the automatic speed brake handle to the ARMED position.
(f)
Within 15 seconds of the above step, place the automatic speed brake handle to DOWN (stowed) position.
(g)
Within 15 seconds of the above step, advance both throttles all the way forward.
(h)
Within 15 seconds of the above step, retard both throttles aft to idle stop.
(i)
After a delay of approximately 51 to 57 seconds from step (h), verify that all four brakes stacks are closed, and the AUTOBRAKE DISARM light starts to flash.
(j)
Release the TEST switch on the front of the antiskid module.
(k)
After 5 seconds, lightly depress the right brake pedal. Verify that the AUTOBRAKE DISARM light illuminates steadily.
(l)
Check hydraulic connection to switch for leaks.
(m)
Place the AUTOBRAKE selector switch to OFF position.
NOTE: The AUTOBRAKE light repeats all light indications of the AUTOBRAKE DISARM light in the rest of the test.
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Autobrake Hydraulic Pressure Switch Installation 591
32-43-62 Figure 401 Aug 15/80
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
D. Reset parking brake.
E. Remove hydraulic systems A and B power (Ref 29-11-0, 29-12-0).
6. Restore Airplane to Normal
A. Remove electrical power if no longer required.
B. Remove gear ground lock assembly (Ref 32-00-01) if no longer needed.
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AUTOMATIC BRAKING SYSTEM - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Hydraulic Fluid, Fire Resistant - BMS 3-11
B. Skydrol Assembly Lube - MCS 352
2. Remove Hydraulic Fuse
A. Depressurize hydraulic systems A and B (Ref 29-11-00 MP and 29-12-00 MP).
B. Disconnect inlet and outlet hydraulic lines and remove hydraulic fuse (Fig. 401).
3. Install Hydraulic Fuse
A. Remove reducer from each end of removed fuse and install on replacement fuse using new O-rings. Lubricate O-rings with hydraulic fluid or Skydrol Assembly Lube, prior to installation.
B. Place fuse in position, being sure flow direction arrow points forward (Fig. 401).
CAUTION: MAKE SURE THE FLOW DIRECTION ARROW ON THE FUSE POINTS FORWARD (SEE DECAL ON AIRPLANE).
C. Connect inlet and outlet lines to the fuse at the B-nut connections.
D. Pressurize hydraulic systems A and B (Ref 29-11-00 MP and 29-12-00 MP).
E. Make sure there are no leaks at the fuse connections.
F. Check hydraulic reservoirs and service, if required (Ref Chapter 12, Hydraulic Servicing).
G. Bleed the brake system (Ref 32-41-00 MP).
H. Do a test of the automatic brake system operation (Ref 32-43-01 A/T).
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May 01/98 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-43-72 Page 401
Automatic Braking System Hydraulic Fuse Installation 500
32-43-72 Figure 401 Apr 01/97
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
PARKING BRAKE SYSTEM - DESCRIPTION AND OPERATION
1. General
A. A parking brake system is provided to permit setting the brakes during parking or mooring. The system consists of a parking brake lever on the control stand and a mechanical linkage to position pawls in the lower nose compartment which lock the brake linkage in the brakes applied position. (See figure s 1 and 2.) A parking brake shutoff valve prevents hydraulic pressure loss.
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