ANTISKID SHUTTLE VALVE
MODULE COMPONENTS
C
Antiskid Shuttle Valve Module/Component Installation
Figure 401 (Sheet 2)
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S 864-047
(6)
Remove the pressure from the right and left hydraulic systems and reservoirs (Ref 29-11-00).
S 864-048
(7)
Push in the brake pedals seven times to release the pressure from the brake accumulator.
TASK 32-42-07-024-061
3. Antiskid Shuttle Valve Module - Removal (Fig. 401)_______________________________________
A. Procedure
S 944-001
(1)
Do the Prepare for Removal procedure (Ref par. 2).
S 034-002
(2)
Disconnect the hydraulic lines from the module and install caps on the lines.
S 024-003
(3)
Remove the module attach bolts and remove the module.
S 034-004
(4)
Remove the hydraulic fittings (four locations) from the ports for the brake hydraulic lines on the module and discard the O-rings.
S 034-005
(5)
Remove the hydraulic fittings (six locations) from the ports on the module for the hydraulic lines that connect to the normal and alternate antiskid valves.
TASK 32-42-07-404-006
4. Antiskid Shuttle Valve Module - Installation (Fig. 401)____________________________________________
A. Consumable Materials
(1)
D00153 Hydraulic Fluid - BMS 3-11
B.
References
(1)
29-11-00/201, Pressurize/Depressurize Main Hydraulic Systems
C.
Access
(1)
Location Zones
143 Left Main Landing Gear Wheel Well
144 Right Main Landing Gear Wheel Well
D.
Procedure
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MAINTENANCE MANUAL
S 644-066
CAUTION:_______ IF YOU INSTALL ANTISKID SHUTTLE VALVE MODULE PART NUMBER
2-8051-1 OR 2-8051-1MOD AS A SPARE OR TO PREVENT A FLUID
TRANSFER OCCURANCE, IT IS RECOMMENDED THAT THE VALVE MODULE ON
THE OPPOSITE WING BE THE SAME PART NUMBER. THE 2-8051-1 OR
2-8051-1MOD MODULES ARE DESIGNED TO DECREASE OR PREVENT RIGHT
TO CENTER SYSTEM HYDRAULIC FLUID TRANSFER. IF THE 2-8051-1 OR
2-8051-1MOD VALVE MODULE IS MIXED WITH A 2-7460-3 OR 2-7460-4
VALVE, FLUID TRANSFER CAN OCCUR.
(1)
Lubricate the O-rings and the hydraulic fittings before you install them in the module.
S 434-008
(2)
Install the hydraulic fittings (four locations) to the brake ports on the module with new O-rings.
S 434-009
(3)
Install the hydraulic unions (six locations) in the ports for the hydraulic lines that connect to the antiskid valve with new O-rings.
S 424-010
(4)
Install the module with four bolts, washers and nuts (four locations).
S 424-063
(5)
Connect the hydraulic lines to the module.
S 864-013
(6)
Pressurize the right hydraulic system and reservoir (Ref 29-11-00).
S 864-014
(7)
Push in the brake pedals fully four or more times.
S 794-015
(8)
After five minutes, do a check for leaks at the hydraulic tube connections
S 714-016
(9)
Do a test to make sure that the module operates properly as follows:
(a)
Push in and release the brake pedals and look to make sure that the brake wear pins for each of the four brakes extend and retract.
NOTE: This check is to make sure that brake pressure is
____ applied through the module to operate the brakes on the side of the airplane for the module that you replaced.
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(b)
Remove the pressure from the right hydraulic system (Ref 29-11-00).
(c)
Pressurize the left hydraulic system and reservoir (Ref 29-11-00).
(d)
Push in the brake pedals fully again and look at the brakes to make sure that the brake on each of the four wheels operates.
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