O-RING (4 LOCATIONS)
UNION (4 LOCATIONS)
HYDRAULIC LINES
(4 LOCATIONS)
NORMAL ANTISKID MODULE - BODY GEAR
A
Normal Antiskid Module Installation
Figure 401 (Sheet 1)
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A
747-400
MAINTENANCE MANUAL
NORMAL ANTISKID MODULE - WING GEAR
SEE B
NORMAL ANTISKID MODULE - WING GEAR
SEE B
BOLT REDUCER
SUPPORT BRACKET
BOLT
BOLT
HYDRAULIC LINE
HYDRAULIC LINE (4 LOCATIONS)
O-RING
BOLT UNION (4 LOCATIONS)
O-RING (4 LOCATIONS)
WASHER WASHER
NUT NUT
O-RING
UNION
CONNECTOR (4 LOCATIONS) HYDRAULIC LINE
WASHER BRACKET
BOLT WASHER WASHER
NUT BOLT
NORMAL ANTISKID MODULE - WING GEAR
B
Normal Antiskid Module Installation Figure 401 (Sheet 2)
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747-400 MAINTENANCE MANUAL
S 494-011
(3)
Put a cap on the open connectors.
S 034-012
(4)
Disconnect the hydraulic lines (7 locations) from the antiskid module.
S 034-013
(5)
Hold the antiskid module assembly and remove the four bolts, washers and nuts (wing gear normal antiskid module), or the four bolts and washers (body gear antiskid module).
S 024-014
(6)
Remove the antiskid module from the airplane.
S 034-015
(7)
Remove reducers from the SYS PRESS and the MTR PRESS ports of the module.
S 034-072
(8)
Remove the unions from the hydraulic fuses and the RETURN ports of the module.
S 034-073
(9)
Discard the O-rings.
S 494-016
(10)
Put plugs in the ports in the module.
TASK 32-42-02-404-017
3. Normal Antiskid Module - Installation_____________________________________
A. Consumable Materials
(1)
C00272 Hydraulic Fluid - BMS 3-11
B.
References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
(2)
AMM 32-00-30/201, Landing Gear Door Locks
(3)
AMM 32-41-00/201, Brake Hydraulic System
(4)
AMM 32-42-00/501, Brake Control System
(5)
AIPC 32-42-02-11
(6)
SSM 32-42-01
(7)
WDM 32-42-14, WDM 32-42-15, WDM 32-42-16, WDM 32-42-17
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747-400
MAINTENANCE MANUAL
C. Access
(1) Location Zones
118 Electrical & Electronics Compartment, RH
(P180 DC Power Distribution Panel)
137 Body Landing Gear Well - Left (Aft bulkhead, body gear wheel well) Normal Antiskid Module - Left Body Gear
138 Body Landing Gear Well - Right (Aft bulkhead, body gear wheel well) Normal Antiskid Module - Right Body Gear
571 Rear Spar to Landing Gear Support Beam, LH (Above the wing gear trunion) Normal Antiskid Module - Left Wing Gear
671 Rear Spar to Landing Gear Support Beam, RH (Above the wing gear trunion) Normal Antiskid Module - Right Wing Gear
D. Procedure (Fig. 401)
S 494-018
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
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