2) 805 gallons (5200 pounds/2366 kilograms) in the No. 2 and No. 3 fuel tanks.
(e) (f) 3) Supply more fuel as is necessary for the engine start and taxi operations.Make sure that the flap handle and the flaps are in the same position before you supply hydraulic power.Supply pressure to the necessary hydraulic systems for the brakes, the body gear steering and the nose gear steering (Ref 29-11-00/201).
NOTE:____ The hydraulic power for the normal brake system comes from the No. 4 hydraulic system. The hydraulic power for the alternate brake system is supplied by the No. 1 or No. 2 hydraulic system.
The hydraulic power for the nose wheel steering and the body gear steering comes from the No. 1 hydraulic system. The control handle for the landing gear must be in the DN position to activate the two steering systems.
If all hydraulic systems do not operate you should not taxi the airplane.
(g) Do not steer the nose gear with the steering tiller when there is no pressure to hydraulic system No. 1.
NOTE:____ Too much force (50 to 60 pounds) will unseat the steering cable compensator assembly and cause the tiller to not be correctly aligned with the nose gear.
(h) If the tiller and the nose gear are not correctly aligned when you taxi the airplane, do these steps:
NOTE:____ The usual force on the steering tiller with pressure to system No. 1 is 7 to 8 pounds.
(i) (j) (k) (l) 1) Stop the airplane. 2) Remove the pressure from hydraulic system No. 1. 3) Move the tiller in the correct direction to align it with the nose gear. 4) Supply pressure to hydraulic system No. 1.Make sure that the control lever for the landing gear is in the DN position.Make sure that the VHF radio is on.Set the VHF radio to the correct frequency for communications with the ground control authority at the airport.Make sure that the service interphone or the hand radios for ground crew communications are on.
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747-400 MAINTENANCE MANUAL
S 862-024
(3) Close these circuit breakers and attach DO-NOT-CLOSE tags to arm the body gear steering system:
(a)
P7 Overhead Circuit Breaker Panel
1) 7G23, BODY GR STRG ARM AC
2) 7G24, BODY GR STRG ARM DC
(b)
P180 DC Power Distribution Panel
1) 180J07, ANTISKID 1-3
2) 180F07, ANTISKID 2-4
3) 180F08, ANTISKID 13-15
4) 180J08, ANTISKID 14-16
5) 180F25, BRK CONT IND/TEST 1
6) 180F10, BRK CONT IND/TEST 2
D. Taxi the Airplane
S 842-004
(1)
Get the necessary approval from the airport ground control to start the engine.
S 842-005
(2)
Tell the ground crew to remove the wheel chocks and the static ground wire if it is attached.
S 862-006
(3)
Make sure that the beacon light that turns is on.
NOTE: The beacon light must be on while the engines are on.
____
S 862-007
(4) Make sure that the navigation lights are on.
NOTE: The lights must be on during the airplane movement.
____
S 862-008
(5)
Start and operate the engines (Ref 71-00-00/201).
S 842-009
(6)
When the airplane is prepared to taxi, get approval to taxi from the airport ground control.
S 862-010
(7)
When the ground crew gives the signal, release the brakes and start to taxi.
(a)
Supply engine power smoothly to start the airplane movement.
(b)
Move the engines to idle when the airplane starts to move.
(8)
Let the airplane move straight before you start a turn.
S 582-011
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A
747-400 MAINTENANCE MANUAL
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本文链接地址：747-400 AMM 飞机维护手册 TOWING AND TAXIING(27)
