S 844-004
(3)
Put the chocks on the wheels and release the parking brake.
S 844-005
(4)
Fully push the brake pedals until the brake accumulator gage does not show a pressure drop.
S 034-006
(5)
Disconnect the hydraulic lines from the shuttle valve and the cap lines.
S 024-007
(6)
Remove the unions from the ports of the valve, discard the O-rings and put the plugs on the ports.
S 024-008
(7)
Remove the two bolts from the top of the shuttle valve to remove the shuttle valve from the mounting bracket.
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32-41-95
ALL ú ú 01 Page 401 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TASK 32-41-95-404-042
3. Install the Brake Shuttle Valve (Fig. 401)
_______________________________
A. Consumable Materials
(1)
D00054 Lubricant - Hydraulic System Fitting, MCS 352
(2)
D00007 Fluid - Hydraulic, BMS 3-11
B.
References
(1)
12-12-00/301, Hydraulic Reservoir
(2)
29-15-00/201, Hydraulic Systems
C.
Access
(1)
Location Zone
101 Left Control Cabin
102 Right Control Cabin
216 Left Main Wheel Well
217 Right Main Wheel Well
310 Left Main Landing Gear
410 Right Main Landing Gear
D.
Install the Brake Shuttle Valve
S 164-010
(1)
Clean the shuttle valve and the mating surfaces of the mounting bracket.
S 434-011
(2)
Attach the shuttle valve to the bracket with two mounting bolts.
S 644-012
(3)
Lightly apply hydraulic fluid or lubricant to the unions and the O-rings.
S 414-013
(4)
Install the unions in the valve ports.
S 434-014
(5)
Install the new O-rings on the valve unions.
S 434-015
(6)
Connect the hydraulic lines to the valve.
E.
Bleed the Brake System from Antiskid Valves through the Brakes
S 874-016
(1)
Remove the bleeder screw and the washer from the bleeder valve on the brake.
(2)
Connect a flexible hose to the bleeder valve.
S 874-017
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-41-95
ALL ú ú 01 Page 402 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
OVERHEAD
FLOW FLOW BRAKE SHUTTLE LEFT OUTBOARD
FUSE FUSE
RIGHT INBOARD AUTOBRAKE VALVE BRAKE SHUTTLE CONTROL
SEE A
VALVE MODULE
ACCUMULATOR ALT BRAKE
ISOLATION
SEE A SELECTOR VALVE
VALVE
BRAKE METERING VALVE ASSY (2 PLACES)
RIGHT LEFT
CONTROL ANTISKID ALTERNATE SHUTOFF VALVE PARKING BRAKE OUTBD CONTROL ANTISKID LEFT ALTERNATE CONTROL ANTISKID
VALVE AUTOBRAKE INBD VALVES VALVE
RIGHT OUTBOARD BRAKE SHUTTLE BRAKE FUSES FLOW VALVES SHUTTLE BRAKE FUSES FLOW LEFT INBOARD BRAKE SHUTTLE
VALVE INBD RIGHT ANTISKID VALVE
SEE A OUTBD CONTROL VALVES SEE A
ACCUMULATOR
SERVICING GAGE WHEEL WELL AFT
BRAKE PRESS TRANSMITTER BULKHEAD STA 727
BL 0
(VIEW IN THE AFT DIRECTION)
UNIONS BRAKE SHUTTLE VALVE
WASHERS
MOUNTING
BOLTS
UNIONS
FWD STRUCTURE
SHUTTLE VALVE INSTALLATION (RIGHT SHOWN, LEFT SIMILAR)
A
Brake Shuttle Valve Installation Figure 401
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