(7)
Release the pressure from hydraulic system No. 1 (AMM 29-11-00/201).
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747-400 MAINTENANCE MANUAL
S 015-008
(8)
Remove the left forward ceiling panel in the passenger compartment forward of the No. 1 door.
S 215-139
(9)
Inspect the cables (AMM 32-50-00/601).
H.
Adjust Nose Wheel Steering System (Fig. 501 and 502)
S 035-009
(1)
Disconnect the connecting rod from the metering valve input arm.
S 865-010
(2)
Make sure that the rudder interconnect mechanism installation is in the rudder pedal steering engaged position with actuator No. 1 retracted and actuator No. 2 extended.
S 035-011
(3)
Disconnect the steering rod on the steering crank assembly under the flight deck floor.
S 095-133
(4)
Remove the tow safety pin, if it is installed.
S 865-012
(5)
Install the following rigging pins:
(a)
Pin NS-1 in the left-hand tiller drum
1) Make sure that the rigging pin engages the structure on both sides (Fig. 502).
(b)
Pin NS-2 in the right-hand tiller drum 1) Adjust the length of cable NWS1B, if it is necessary, so that the pin may be put in.
2) Make sure that the rigging pin engages the structure on both sides (Fig. 502).
(c)
Pin NS-3 in the rudder pedal interconnect quadrant under the flight deck floor 1) Adjust the length of cables NSW1A and NWS1B, if it is
necessary, so that the pin may be put in. 2) Make sure that the pin engages the structure on both sides (Fig. 501).
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MAINTENANCE MANUAL
SYSTEM DATA FOR RIGGING
MECHANISM CABLE CODE FUNCTION NO LOAD CABLE TRAVEL RIGGING POSITION
SEE A NOSE WHEEL STEERING NWS1A (BODY) NWS1B NWS2A (STRUT) NWS2B (STRUT) (BODY) LEFT TURN RIGHT TURN LEFT TURN RIGHT TURN |5.23 INCHES NOMINAL NOMINAL |7.33 INCHES TILLER POSITION STEERING COLLAR POSITION NEUTRAL NEUTRAL
PEDAL STEERING MICRO-SWITCH STEERING ROD RUDDER PEDAL FORWARD QUADRANT
ARMING SWITCH BRACKET ASSEMBLY QUADRANT
STEERING CRANK
CLUTCH ARM
RUDDER PEDAL INTERCONNECT ACTUATOR NO. 2 RIGGING PIN NS-3 RUDDER PEDAL INTERCONNECT ACTUATOR NO. 1 INTERCONNECT LEVER
A
Nose Gear Steering Mechanism Adjustment Figure 501
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MAINTENANCE MANUAL
Nose Wheel Steering System Rigging
Figure 502 (Sheet 1)
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MAINTENANCE MANUAL
RIGGING
PIN NS-4
STEERING TILLER COMMAND
HANDLE (CAPTAIN'S) TRANSDUCER
POINTER
NWS1A
NWS1B
CABLE
DECAL
COMPENSATOR
ASSEMBLY CABLE DRUMS
SEE D
FWD NWS1A TRUNNION PIVOT LINK RIGGING PIN NS-1
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