32-41-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 842-058
 (3)  Connect a flexible hose to the bleeder valve.
 S 842-059
 (4)  Put the free end of the hose in a clean container not fully filled
 with the same fluid used in the brake system.
 S 842-060
 (5)  Remove the lockwire on the bypass lever of the hydraulic fuse for
 the brake that is bled.
 NOTE:____ The Decoto hydraulic fuse does not have lockwire installed on
 the lever.

 S 842-061
 (6)  Move the bypass lever to the open position, hold it open and apply the brakes.
 NOTE: Always operate the brake fuse bypass valve before you apply
____ the brakes.
 S 872-062
 (7)  
Apply the brakes while you open and close the bleeder valve on the brakes with an applicable wrench.

 S 872-063

 (8)  
Do this operation until all the air is gone from the flow of fluid.

 S 842-064

 (9)  
Close the bleeder valve while the pressure is kept on.

 S 842-065

 (10)
 Remove the bleed hose, tighten the bleeder valve to 40 pound-inches, and install the bleed screw and the washer.

 S 842-066

 (11)
 Release the bypass lever on the fuse, allow the lever to go back to the closed position and install the lockwire.

 NOTE: The Decoto hydraulic fuses do not have lockwire installed on
____ the lever.
 S 612-067
 (12) Fill the hydraulic reservoir of system A (AMM 12-12-00/301).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 842-024
 (13) Set the parking brake.
 TASK 32-41-00-702-025
 2. Hydraulic Brake Fuse Test
_________________________
 A. General
 (1)  
The hydraulic brake fuse test does a check on the capacity of the fuse to control the fluid leak when a hydraulic line breaks. Do the test for each fuse in the system.

 B.
Standard Tools and Equipment

 (1)  
Container - 2 U.S. gallons capacity

 C.
References

 (1)  
AMM 12-12-00/301, Hydraulic Reservoir

 (2)  
AMM 29-15-00/201, Hydraulic System

 D.
Access

 (1)  
Location Zone
 101 Left Control Cabin
 102 Right Control Cabin
 310 Left Main Landing Gear
 410 Right Main Landing Gear

 E.
Normal Brake System Test.

 S 842-026
 (1)  
Remove the screw from the end of the bleed fitting on the brake and install the bleed hose in the end of the fitting.

 S 842-027

 (2)  
Put a container with a minimum capacity of two U.S. gallons below the brake bleed fitting.

 (3)  
Pressurize the hydraulic system B (AMM 29-15-00/201).

 S 722-029

 (4)  
Push the brake pedals to the maximum position to apply full brake pressure.

 S 842-028
 NOTE: The parking brake can be used to keep the brake pedals pushed
____
 during the check.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-41-00
 ALL  ú ú 01 Page 205 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 722-030
 (5)  While full brake pressure is applied, open the brake bleeder valve
 and let the fluid go into the container until the flow stops.
 S 722-031
 (6)  Make sure that the quantity collected in the container is
 42-80 cubic inches or approximately 0.18 to 0.35 gallons.
 S 842-032
 (7)  Close the bleeder valve and remove the bleed hose.
 S 432-033
　
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