(5)
AMM 32-21-03/201, Nose Gear Torsion Links

 (6)
AMM 32-51-04/401, Steering Metering Valve

 (7)
AMM 32-51-11/401, Steering Compensator Assembly

 (8)
AIPC 32-21-03 Fig. 1

 (9)
AIPC 32-51-04 Fig. 1

 (10)
 AIPC 32-51-60 Fig. 1

 D.  
Access

 (1)  
Location Zone
 715 Nose Landing Gear

 E.  
Test Compensator/Inlet Check Valve (Fig. 601)

 S 496-035
 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE THE EQUIPMENT.
 (1) Install the ground locks in all landing gear (AMM 09-11-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A

747-400
MAINTENANCE MANUAL

AFT ANTICAVITATION CHECK VALVE PLUG
SEE B
SEE A
FWD
METERING
VALVE
FWD BODY
A
PLUG PACKING SPRING POPPET
FWD
B
Steering Metering Valve Compensator Check Figure 601
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 S 496-003
 WARNING:_______ YOU MUST CAREFULLY DO THE STEPS IN THE TASK 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.
 (2)  
Do this task: "Installation of the Door Locks on the Nose Landing Gear" (AMM 32-00-30/201).

 S 866-004

 (3)  
Make sure the pilot's tiller is centered.

 S 866-030

 (4)  
Remove system No. 1 hydraulic power (AMM 29-11-00/201).

 S 036-007

 (5)  
Remove the aft anticavitation check valve plug.

 NOTE: Remove the plug slowly, and bleed off the trapped fluid
____ or the check valve spring and poppet can come out.
 S 486-008
 (6)  Install the adapter, the hose and the gage.
 NOTE: Make sure the spring and poppet are installed as shown in
____ View B.
 S 866-009
 WARNING: MAKE SURE THE NOSE GEAR DOOR LOCK IS INSTALLED AND THAT NOSE
_______ GEAR GROUND DOOR RELEASE HANDLE IS IN DOWN AND LOCKED POSITION. MAKE SURE THAT LANDING GEAR CONTROL HANDLE IS IN DOWN POSITION. INADVERTENT APPLICATION OF HYDRAULIC PRESSURE CAN CAUSE DOORS TO CLOSE RAPIDLY CAUSING POSSIBLE INJURY.
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (7)  Supply system No. 1 hydraulic power (AMM 29-11-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 S 976-034
 (8)  Wait for the pressure gage to become stable.
 S 976-036
 (9)  Write pressure gage indication.
 NOTE:____ AIRPLANES WITHOUT PARKER SB 2670005-32-45;
 Pressure should read from 50 to 130 psi.
 AIRPLANES WITH PARKER SB 2670005-32-45 OR
 WITH PARKER 2670005M7 VALVES;
 Pressure should read from 205 to 325 psi.

 S 866-033
 (10)
 Remove system No. 1 hydraulic power (AMM 29-11-00/201).

 S 976-013
　
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