(7)
Disconnect the hydraulic lines and seal them with a cap.
(8)
Remove the unions from the valve ports and discard the O-rings.
S 024-007
S 034-008
S 024-009
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32-42-31
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 024-010
(9) Hold the valve, remove the four mounting bolts and remove the valve.
TASK 32-42-31-404-011
3. Antiskid Valve Installation (Fig. 401 or 402)
___________________________
A. Consumable Materials
(1)
D00274 Lubricant - Hydraulic Fluid
B.
References
(1)
24-22-00/201, Manual Control
(2)
29-15-00/201, Hydraulic System
(3)
32-41-00/201, Hydraulic Brake System
C.
Access
(1)
Location Zone
101 Control Cabin - Left
102 Control Cabin - Right
216 Left Main Wheel Well
217 Right Main Wheel Well
310 Left Main Landing Gear
410 Right Main Landing Gear
D.
Install Antiskid Valve
S 424-012
(1)
Put the valve in its position and install it.
S 434-013
(2)
Install the bolts which hold the antiskid valve to the airplane.
S 644-014
(3)
Lightly lubricate the O-rings and the unions with hydraulic fluid.
S 424-015
(4)
Install the unions and the new O-rings in the valve ports.
S 424-073
(5)
Install the check valve in the return port of the alternate antiskid valve.
(6)
Connect the hydraulic lines.
(7)
Install the electrical connector.
(8)
Pressurize the hydraulic systems A and B (AMM 29-15-00/201).
S 434-016
S 424-017
S 844-018
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A 737-300/400/500MAINTENANCE MANUAL
S 844-019
(9)
If you replaced the alternate antiskid valve, remove the pressure from hydraulic system B to move brake pressure to the alternate system (AMM 29-15-00/201).
S 874-020
(10)
Bleed the hydraulic brake system (AMM 32-41-00/201).
S 794-021
(11)
Set the parking brakes and do a check the fittings for leaks.
S 844-022
(12)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
OUTBD ANTISKID
(b)
INBD ANTISKID
(c)
ANTISKID FAIL WARN & PARKING BK
E.
Do a Check on the Operation of the Valve
S 844-023
(1)
Pressurize the hydraulic systems A and B (AMM 29-15-00/201).
S 844-024
(2)
Make sure the wheel chocks are in their position.
S 844-025
(3)
Release the parking brake.
S 844-026
(4)
Open the ANTISKID FAIL WARN & PARK BRAKE circuit breaker on the P6 panel and attach a DO-NOT-CLOSE tag.
S 034-027
(5)
Disconnect the connector, D928, from the parking brake valve in the wheel well of the main landing gear.
S 844-028
(6)
Close the ANTISKID FAIL WARN & PARK BRAKE circuit breaker on the P6 panel and remove the DO-NOT-CLOSE tags.
(7)
Set the parking brake.
(8)
Supply electrical power to the antiskid system (AMM 24-22-00/201).
S 844-029
S 844-030
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