S 424-016
(6)
Put the module assembly in its position and install the four washers and nuts. Tighten the nuts.
S 434-017
(7)
Remove the caps from the fittings on the module assembly and from the hydraulic lines.
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S 434-048
(8)
Connect the hydraulic lines (AMM 29-11-00/201).
S 434-018
(9)
Connect the three electrical connectors in the appropriate control module.
(a)
Right hand hydraulic control module 1) The electrical connector DX343A for the solenoid valve 2) The electrical connector DX343B for the pressure switch 3) The electrical connector DX343C for the servo valve.
(b)
Left hand hydraulic control module 1) The electrical connector DX358A for the solenoid valve. 2) The electrical connector DX358B for the pressure switch. 3) The electrical connector DX358C for the servo valve.
F.
Test of the Control Module
NOTE:____You can also taxi the airplane to do this test. That will put the steering actuators in the position for the test. Use the procedures in AMM 09-21-00/201 to taxi the airplane.
S 864-049
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P7 Overhead Circuit Breaker Panel
1) 7G23 BODY GR STRG ARM AC
2) 7G24 BODY GR STRG ARM DC
S 864-019
(2)
Supply electrical power (AMM 24-22-00/201).
S 014-021
(3)
Disconnect the torsion links for the nose landing gear at the apex (AMM 32-21-03/201).
S 014-022
(4)
Disconnect the steering actuators for the left and right body gear from the lower torsion link. Make sure the hydraulic hose clamp is not attached to the apex pin (AMM 32-53-11/201).
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S 864-023
(5)
Make sure the rudder pedals are in the neutral position.
S 864-024
(6)
Make sure the Captain's and First Officer's tillers are in the neutral position.
S 864-025
(7)
Move the control handle for the landing gear to the DN position.
S 864-026
(8)
Make sure the rudder trim is at the zero position.
S 864-027
(9)
Make sure the EIU source is set to AUTO for the EFIS/EICAS display.
S 864-028
(10)
Make sure the hardware that follows is functional and serviceable:
(a)
EIU
(b)
EICAS
(c)
PSEU
(d)
CMC
S 864-051
WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE
_______ MOVABLE COMPONENTS ON THE NOSE AND BODY LANDING GEAR. WHEN YOU PRESSURIZE THE HYDRAULIC SYSTEM OR OPERATE THE STEERING SYSTEMS, THESE COMPONENTS CAN MOVE QUICKLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(11)
Pressurize the No. 1 hydraulic system (AMM 29-11-00/201).
(12)
Examine the hydraulic connections for leaks.
S 794-030
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S 744-031
(13)
Do a BITE test with the tiller in the neutral position.
(a)
Push OTHER FUNCTION on page 2 of the CDU main menu.
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本文链接地址：747-400 AMM 飞机维护手册 起落架 LANDING GEAR 8(76)
