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) Move the ground release handle for the main landing gear to the DOORS CLOSED position.
NOTE: This will close the body gear doors, and wing gear doors if
____ necessary.
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(9) Remove pressure from hydraulic system No. 1 and No. 4 (AMM 29-11-00/201).
TASK 32-00-30-092-096
15. Main Landing Gear Door Ground Release Handle Lock Removal
_________________________________________________________
A. Special Tools and Equipment
(1) MIT65B82664 - Main Landing Gear Ground Door Release Handle Lock
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A
747-400
MAINTENANCE MANUAL
B. References
(1)
09-11-00/201, Towing
(2)
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. 207)
S 492-097
(1)
Make sure that you install ground locks in the landing gear
(AMM 09-11-00/201).
S 862-098
(2)
Make sure that there is no pressure to hydraulic systems No. 1 and No. 4 (AMM 29-11-00/201).
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(3)
Make sure the ground release handle for the main gear doors is in the DOORS OPEN position.
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(4)
Remove the door handle lock and pin as shown (Fig. 207).
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CAUTION: MAKE SURE THE SHOCK STRUTS (OLE0S) FOR THE BODY
_______ GEAR HAVE THE CORRECT MINIMUM X DEMINSION BEFORE YOU CLOSE THE GEAR DOORS. IF THE SHOCK STRUTS DO NOT HAVE THE CORRECT MINIMUM X DEMINSION THE BODY GEAR DOORS CAN HIT THE TIRES WHEN YOU CLOSE THE DOORS.
(5) Pressurize hydraulic systems No. 1 and No. 4 (AMM 29-11-00/201).
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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.
(6) Move the ground release handle for the main gear to the DOORS CLOSED position. This will close the wing and body gear doors.
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S 862-103
(7) Remove pressure from hydraulic systems No. 1 and No. 4 (AMM 29-11-00/201).
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1.
2.
3.
A
747-400 MAINTENANCE MANUAL
LANDING GEAR CONTROL CABLES - DESCRIPTION AND OPERATION
_______________________________________________________
Landing Gear Control Cables (Fig. 1 through 7)
___________________________
A. This section provides data to locate and fabricate landing gear control cables including gear and door emergency release cables, ground door release cables, and brake cables. See figures 1 through 7 for applicable control system cables. For control cable removal and installation, refer to 20-11-03/401. For control cable rigging, refer to Adjustment/Test of the system involved. For control cable inspection/check, refer to 20-21-03/601.
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