(2)
You can lift the airplane with jacks in winds up to 35 knots.
(3)
To change a wheel or a tire, you can lift the nose landing gear with a nose axle jack (AMM 07-11-03/201).
CAUTION: DO NOT USE THE SHOCK STRUT RESTRAINT ON INFLATED SHOCK-STRUTS.
_______
THE RESTRAINT HAS A LOAD LIMIT.
(4) The airplane nose also can be lifted at jack point A if the nose strut has been deflated, and the restraint is installed.
B. Equipment
(1)
Airplane Jack (Ref 07-11-01)
(2)
Adapter, Forward Body Jack-B07001-7
(3)
Shock Strut Restraint, NLG - B32019-1
(4)
Wheel chocks
C. Consumable Materials
(1) G00508 Compound, Corrosion Preventive - MIL-C-11796 Class 3
D. References
(1)
07-11-01/201, Jacking Airplanes
(2)
07-11-03/201, Jacking Airplane Axles
(3)
12-15-02/301, Nose Gear Shock Strut
(4)
32-00-20/201, Landing Gear Downlocks
E. Access
(1) Location Zones 116 Area Between Nose Gear Wheel Well and Fuselage, Right
(Nose Jack Point)
700 Nose Landing Gear Area
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
07-11-02
ALL ú ú 01 Page 201 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
F. Prepare to Lift the Airplane Nose on Jacks
S 492-002
(1)
Make sure that the landing gear downlocks are installed
(Ref 32-00-20).
S 042-004
(2)
If electrical power is supplied to the airplane while it is on jacks, do the steps that follow:
WARNING: DO THE DEACTIVATION PROCEDURE FOR THE FLIGHT MODE
_______ SIMULATION BEFORE YOU LIFT THE AIRPLANE NOSE WITH THE JACK. WHEN YOU OPEN THE AIR/GROUND RELAY SYSTEM, THE AIRPLANE IS IN THE FLIGHT MODE. WHEN IN THE FLIGHT MODE AND ELECTRICAL POWER IS APPLIED, MANY OF THE AIRPLANE SYSTEMS WILL OPERATE. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(a) Do the deactivation procedure for the flight mode simulation (Ref 32-09-02).
S 972-003
(3) Make sure that the airplane gross weight and center of gravity (CG) are at approved limits. The approved limits to lift at the forward body jack point are shown in Fig. 202.
S 582-019
CAUTION: DO NOT LIFT THE AIRPLANE ON JACKS IN WINDS MORE THAN 35 KNOTS.
_______
(4) Make sure the airplane is turned into the wind if it is possible, when jacking is necessary out of the hangar.
S 612-005
CAUTION: DO NOT DEFLATE THE SHOCK STRUT WHEN A GEAR RETRACTION TEST IS
_______ DONE. THE SHOCK STRUT MUST BE SERVICED CORRECTLY AND NOT INFLATED ABOVE THE CORRECT PRESSURE OR DAMAGE TO THE WHEEL WELL AND SHOCK STRUT WILL OCCUR.
(5)
Make sure that the nose landing gear shock strut is filled to the correct pressure before a gear retraction test (Ref 12-15-02).
S 492-006
(6)
Install the jack adapter (Fig. 201).
(a) Remove the filler bolts (4) from the jack pad at jack point A. Keep the bolts so they can be installed after the jack is removed.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
07-11-02
ALL ú ú 01 Page 202 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 092-007
(7)
Clear the area of persons, work platforms, entry stands, and other support equipment that are not necessary.
S 492-008
(8)
Put wheel chocks for the main landing gear wheels in the correct position. This will prevent forward and aft movement of the airplane before the jack is seated.
G. Lift the Airplane Nose with an Extended Shock Strut and a Nose Jack
S 082-021
(1) Put the nose landing gear in its center position (AMM 32-51-00).
S 892-025
CAUTION: MAKE SURE THE AREA BELOW THE AIRPLANE IS CLEAR OF ALL EQUIPMENT
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