S 034-008
(5)
Disconnect the hydraulic line from the inboard end of the relief valve. Put a cap on the hydraulic line.
S 024-009
(6)
Remove the relief valve.
TASK 32-41-71-424-010
3. Install the Brake System Relief Valve (Fig. 401)
_____________________________________
A. Consumable Materials
(1)
D00000 Hydraulic Fluid, Fire Resistant - BMS 3-11 (AMM 20-30-21)
B.
References
(1)
AMM 12-12-00/301, Hydraulic System Reservoirs
(2)
AMM 12-15-11/301, Hydraulic Brake Accumulator
(3)
AMM 29-15-00/201, Hydraulic Systems A, B, And Standby
C.
Access
(1)
Location Zones
101/102 Control Cabin 216 Left Main Wheel Well 217 Right Main Wheel Well
D. Procedure
(1) S 824-011Align the relief valve with the hydraulic lines.
(2) S 424-012Connect the the hydraulic lines to the relief valve.
(3) S 864-015Pressurize hydraulic system B (AMM 29-15-00/201).
(4) S 734-016Make sure that the gages for hydraulic system B and the brake accumulator indicate approximately 3000 psig.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 794-017
(5)
Do a check to make sure that there are no leaks at the connections between the hydraulic lines and the relief valve.
S 864-018
(6)
Fully push down and release the brake a minimum of six times to bleed the air from the accumulator.
S 614-019
(7)
Do the servicing of the hydraulic systen reservoirs (AMM 12-12-00/301)
TASK 32-41-71-714-020
4. Do a Test of Hydraulic Brake Accumulator Operation
__________________________________________________
A. References
(1)
AMM 29-15-00/201, Hydraulic Systems A, B, And Standby
B.
Access
(1)
Location Zones
101/102 Control Cabin 216 Left Main Wheel Well 217 Right Main Wheel Well
C. Procedure
S 864-021
(1)
Pressurize hydraulic system B to 3000 +150/-200 psi and keep this pressure for a mimimum of two minutes (AMM 29-15-00/201).
S 784-029
(2)
Make sure that the hydraulic brake pressure gage in the flight compartment is within 100 psi of the hydraulic system pressure gage of system B.
S 864-022
(3)
Remove the pressure from hydraulic systems A and B
(AMM 29-15-00/201).
S 714-023
(4)
Fully push in the captain's brake pedals and release them five times.
NOTE: Stop approximately three seconds between each time that
____ you push and release the brake pedals.
(a)
Make sure that the brake accumulator pressure decreases after each time that you push and release the brakes.
(b)
Make sure that the brake pressure is not less than 800 psi after the fifth time that you push and release the brakes.
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32-41-71
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
FLOW FLOW FUSE FUSE
OVERHEAD AUTOBRAKE CONTROL MODULE
ACCUMULATOR ALT BRAKE
ISOLATION SELECTOR VALVE
VALVE
ANTISKID ANTISKID SHUTTLE BRAKE METERING SHUTTLE VALVES VALVE ASSEMBLY VALVES
(2 LOCATIONS)
RIGHT LEFT LEFT
ALTERNATE PARKING BRAKE ANTISKID ALTERNATE
ANTISKID SHUTOFF VALVE OUTBD CONTROL ANTISKID
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