(1)
AMM 12-12-01/301, Hydraulic Systems Servicing (Reservoir Replenishing)
(2)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
(3)
AMM 32-00-15/201, Landing Gear Doorlocks
(4)
AMM 32-00-20/201, Landing Gear Downlocks
D.
Prepare to Bleed the Brakes
S 492-003
(1) Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
S 492-004
WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOOR LOCKS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
S 862-005
(3)
Release the parking brake.
E.
Bleed the Brakes (Fig. 201)
S 842-002
(1)
Prepare the bleed port for one of the eight brakes.
(a)
Remove the screw and washer from the end of the bleeder valve.
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SEE A HYDRAULIC LINE
BRAKE DISCONNECT
BLEEDER VALVE WASHER BLEEDER SCREW
MAIN LANDING GEAR BRAKE
AXLE
(EXAMPLE - EACH BRAKE) A
Hydraulic Brake Bleed Port Location
Figure 201
F29866
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(b)
Install a hose on the end of the bleeder valve.
(c)
Put a container below the brake bleeder port so that fluid can go from the hose into the container.
S 862-006
(2)
Pressurize the right hydraulic system and reservoir (AMM 29-11-00/201).
S 872-007
(3)
Bleed the brakes (normal system).
(a)
Slowly push in the Captain's brake pedals approximately one-half the normal travel and slowly release them. Do this six times to cause separation of the air from the fluid in the lines.
(b)
Fully push in and release both brake pedals six times.
(c)
Put on goggles for eye protection.
(d)
While you apply the brakes, open the bleeder valve slowly about one-half turn and allow fluid to flow from the hose until there is no evidence of air.
NOTE: Fluid can flow out of the hose very quickly and
____ intermittently. Be sure that the flow goes into the container.
If fluid flow stops while the bleed fitting is open, the brake fuse has closed.
(e) If brake fuse is closed, do the steps that follow:
1) Close the bleed valve and rotate the fuse knob clockwise to manually reset the brake fuse. Hold the fuse knob in bypass position for 5 seconds minimum to make sure that the fuse resets.
NOTE: The hydraulic fuses are located on the antiskid
____ module in the wheel well.
2) Open the bleeder valve and continue to bleed the brake until air is removed.
(f)
Close the bleeder valve.
(g)
Remove the bleed hose and install the screw with washer in the end of the bleeder valve.
(h)
Do again the steps to prepare the bleed port, bleed the brake, and close the bleed port for each of the other seven brakes.
S 612-008
(4)
Do the servicing procedure for the right hydraulic system reservoir as necessary (AMM 12-12-01/301).
S 862-009
(5)
Depressurize right hydraulic system and reservoir, and pressurize left hydraulic system and reservoir (AMM 29-11-00/201).
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S 872-010
(6)
Bleed the brakes (alternate system).
(a)
Do the seven steps under "Bleed the brakes (normal system)".
S 432-011
(7)
If you will not do the antiskid fuse capacity test that follows, tighten the bleeder valve as follows:
(a)
Tighten the bleeder valve on the B.F. Goodrich brakes to 35-55 pound-inches.
(b)
Tighten the bleeder valve on the Dunlop brakes to 8 pound-feet.
S 862-012
(8)
Set the parking brake.
S 862-013
(9)
Remove the power from the left hydraulic system (AMM 29-11-00/201).
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