JACK AIRPLANE NOSE
1. Equipment and Materials
A. Nose Landing Gear Shock Strut Retainer -6ME65-73762 or F70263-1
B. Body jack and jack pad adapter (Ref 7-11-11, Fig. 202)
C. Nose and Main Landing Gear Ground Lockpins - F72735
2. Raise Airplane Nose
CAUTION: DO NOT EXCEED ONE INCH CLEARANCE FROM JACK RAM LOCKNUT TO COLLAR AS JACK IS BEING RAISED OR LOWERED. EXCESSIVE CLEARANCE CAN RESULT IN DAMAGE TO AIRPLANE STRUCTURE IF JACK FAILS.
A. Ensure that airplane weight and CG conditions are such that nose jacking point allowable loads will not be exceeded during the jacking operation.
NOTE: Shifting of weight in the airplane is permissible, within allowable CG and weight limits, to ensure compliance with nose jack point load limit.
B. Ensure that all gear ground lockpins are installed.
C. Set stabilizer, aileron and rudder trim controls to 0.
D. Head airplane into wind if in an exposed area.
CAUTION: DO NOT JACK AIRPLANE AT JACK POINT C IF WINDS EXCEED 35 MILES PER HOUR.
E. Install nose jack pad adapter at jack position C (Ref 7-11-11, Fig. 201)
F. Retract Airstairs.
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G. Position nose jack under jacking point C with jack rotated so that a line between aft two jack footpads is perpendicular to airplane centerline and jack is centered under jack pad (Ref 7-11-11, Fig. 201).
CAUTION: IF JACK IS NOT CENTERED UNDER JACK PAD, DAMAGE TO JACK OR AIRPLANE CAN OCCUR. AIRPLANE SHOULD BE ON LEVEL GROUND.
CAUTION: DO NOT DEFLATE THE SHOCK STRUTS IF YOU DO A GEAR RETRACTION TEST. THE SHOCK STRUTS MUST BE FILLED CORRECTLY AND NOT INFLATED ABOVE THE CORRECT PRESSURE. DAMAGE TO THE WHEEL WELL AND THE SHOCK STRUT WILL OCCUR.
NOTE: Jack must be equipped with pressure gage and a table converting pressure readings to load in pounds at jacking point.
H. Release airplane brakes, if applied, and move main gear forward wheel chocks forward about 2 inches from tires. Remove nose wheel chocks.
I. Raise nose jack maintaining a distance of one inch or less between jack ram locknut and the jack collar. To permit a nose landing gear retraction test, raise nose until nose wheels clear ground approximately three inches.
CAUTION: DO NOT EXCEED NOSE JACKING POINT ALLOWABLE LOAD.
J. Screw down jack ram locknut and tighten set screw when nose gear clears the ground by required amount.
3. Lower Airplane Nose
CAUTION: DO NOT EXCEED ONE INCH CLEARANCE FROM JACK RAM LOCKNUT TO COLLAR AS JACK IS BEING RAISED OR LOWERED. EXCESSIVE CLEARANCE CAN RESULT IN DAMAGE TO AIRPLANE STRUCTURE IF JACK FAILS.
A. Ensure that area immediately under airplane nose is clear and that all gear ground lockpins are installed.
B. Lower nose jacking point C, maintaining a distance of one inch or less between the jack ram locknut and the jack collar (Ref 7-11-11, Fig. 201).
NOTE: It may be necessary to raise jack ram slightly to relieve load on jack ram locknut and allow locknut to be moved up ram.
C. Remove jack, jack pad adapter, and nose gear shock strut retainer.
D. Inflate nose gear shock strut (Ref Chapter 12, Nose Landing Gear Shock Strut Servicing).
E. Extend Airstairs.-
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JACK AIRPLANE AXLES
1. General
A. Jacking points are provided under each landing gear axle to remove wheel and tire or brake assembly without raising the entire airplane. For approximate axle jack pad heights and clearances between tires refer to 7-11-11, Fig. 202. The tables should be used as a guide only, as dimensions vary due to conditions.
CAUTION: DO NOT ATTEMPT TO JACK AIRPLANE BY PLACING JACK UNDER ANY PART OF THE LANDING GEAR OTHER THAN THE AXLE JACK PADS. DAMAGE RESULTING FROM JACKING ELSEWHERE MAY RESULT IN LANDING GEAR FAILURE.
NOTE: If it is possible, turn the airplane into the wind when it is out of the hangar for jacking the airplane axles.
2. Equipment and Materials
A. Axle Jacks and Jacking Adapters (Ref 7-11-11, Fig. 202)
B. Nose and Main Landing Gear Ground Lock Assembly - F72735
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3. Jack Main Landing Gear Axles
A. When both tires on the same main gear axle are flat, check that all landing gear downlocks are installed and raise the airplane with minimum height jacks. Refer to 7-11-11, Fig. 202, for jacks of suitable heights.
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