S 612-073
(4) Make sure the tires are at the correct pressure (AMM 12-15-06/301).
S 862-025
WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE DOOR
_______ OPERATION AREA. FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(5) Move the ground release handle for the wing and body gear doors to the DOORS OPEN position.
NOTE:____This will open the wing and body gear doors. Handles for main gear doors are on the keel beams near the aft inboard corners of body gear wheel wells. You can get to the handles through the strut door openings for the body gear.
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747-400 MAINTENANCE MANUAL
S 862-026
(6)
Release the pressure from hydraulic system No. 1 and No. 4 (AMM 29-11-00/201).
S 492-027
(7)
Install door locks for the wing gear doors as shown (Fig. 205).
S 032-028
WARNING: HOLD THE DOORS OPEN OR KEEP THE DOOR OPERATION AREA CLEAR.
_______ FAST MOVEMENT OF THE LANDING GEAR DOORS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(8) Disconnect the operator rods from the body gear doors (Ref Disconnect the Body Gear Door Operator Rods) or install body gear door locks (Ref Install the Body Gear Door Locks) if necessary.
TASK 32-00-30-492-029
7. Body Landing Gear Door Lock Installation
________________________________________
A. Special Tools and Equipment
(1)
2MIT65B80174 - Body Landing Gear Door Lock
B.
References
(1)
09-11-00/201, Towing
(2)
12-15-06/301, Landing Gear Tire
(3)
29-11-00/201, Main Hydraulic Supply System
C.
Access
(1)
Location Zone
137 Body Landing Gear Wheel Well, LH
138 Body Landing Gear Wheel Well, RH
D.
Procedure (Fig. 206)
S 492-030
(1) Make sure that you install the ground locks for the landing gear (AMM 09-11-00/201).
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MAINTENANCE MANUAL
SEE A
BODY GEAR DOOR ACTUATOR
COLLAR ASSEMBLY DOOR ACTUATOR BEAM
DOOR LOCK BODY GEAR
HANDLE
FWD
A
Body Gear Door Lock Figure 206
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S 612-068
CAUTION: MAKE SURE YOU DO THESE STEPS BEFORE YOU OPERATE THE DOORS:
_______ MAKE SURE SHOCK STRUTS (OLEOS) FOR THE BODY GEAR HAVE THE CORRECT MINIMUM DIMENSION. MAKE SURE THE TIRES ARE AT THE CORRECT PRESSURE. IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE DOOR CAN HIT AND CATCH ON THE TIRES. IF THE STRUT AND TIRES ARE DEFLATED, THE BODY GEAR DOORS WILL HIT THE GROUND WHEN YOU OPEN THEM.
(2) Make sure the minimum X dimension for the body gear struts (oleos) is as shown on the foil marker.
NOTE: The marker is on the inner surface of the gear strut door,
____
below the handle.
S 612-069
(3) Make sure the tires are at the correct pressure (AMM 12-15-06/301).
S 862-129
WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE DOOR
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