W50S8X20B0001-0008_Aircraft_Jacking_Data.pdf

TO 1C-130J-2-00GV-00-1

Section IX. LIFTING AND JACKING

WARNING

Do not attempt to jack an airplane by over-inflating the shock struts.

9-1 GENERAL JACKING INFORMATION.

The airplane can be jacked with axle jacks or with wing and/or fuselage jacks, depending on the condition of the airplane. Axle jacks are used under built-in points on the base of each strut, or under removable jacking and towing fittings which can be installed on any of the main landing gear struts. A wing jack may be installed under a jacking point on each wing. This point is on the underside of the wing, just inboard of the wing break at the rear beam. Fuselage jacking points are on each side of the nose at FS 165. The gross weight and center of gravity of the airplane must be taken into consideration before the airplane is jacked. If these are not within limits, it is not safe to jack the airplane. The nose of the airplane can be jacked with two fuselage jacks or using the NLG jacking bar. The airplane may be jacked on one side only using axle jacks. The entire airplane may be jacked using two fuselage jacks and two wing jacks. Fuselage (nose) jacks must be used in manifolded pairs. Only jacks of the same type with rams of equal size should be manifolded. This prevents asymmetrical forces when jacking.

9-1.1 Wing and Fuselage Jacking Provisions. Figure 9-1 shows jacking provisions for wing and fuselage jacks. The Jacking Job Guide Manual includes a task jacking complete airplane using wing and fuselage jacks.

9-1.2 Nose Gear Tire Change Jacking Provisions. The Jacking Job Guide Manual contains three nose jacking tasks, one for axle jacking of the nose landing gear with at least one tire inflated, one for fuselage jacking of the airplane nose, and one for jacking the nose landing gear, which can be used when both nose landing gear tires are flat. Figure 9-2 shows the use of the nose gear jacking bar.

NOTE

If one main gear tire is blown on either side, the airplane may be towed or taxied from an active runway or taxiway.

9-1.3 Main Gear Tire Change Jacking Provisions. The Jacking Job Guide Manual contains three main gear jacking tasks, one for use when one tire on a side is blown, one using integral jack pads, and one using jacking and towing fittings. When one tire on a side is blown, the strut lock must be used to prevent piston movement during jacking. If both tires on one side are blown, the airplane should be jacked using wing and fuselage jacks, as required. Figure 9-2 shows the use of the 35-ton jack and jacking and towing fittings on the main gear.

9-1.4 Jacking Equipment. The types of equipment used to jack the airplane are identified in the Jacking Job Guide Manual.

9-1.5 Allowable Weight Limits for Jacking. Figure 9-3 and figure 9-4 show gross weight versus center of gravity limits for jacking; figure 9-3 is for C-130J (Short) airplanes while figure 9-4 is for C- 130J (Long) airplanes. The following should be taken into consideration when using these figures:. These figures are based on allowable jack pad loads.. Before jacking a single main landing gear strut at an airplane weight exceeding 140,000 pounds, confirm that the other tire on the same side is not underinflated for the airplane weight. If both

Use, copying and/or disclosure is governed by the statement on the title page of this document. Change 3 9-1 g g g figure 9-3 is for C-130J (Short)

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1170069664N Sticky Note this is primary method of aircraft jacking in hangar

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Figure 9-1. Wing and Fuselage Jacking Provisions

Use, copying and/or disclosure is governed by the statement on the title page of this document.9-2

Figure 9-2. Nose and Main Gear Tire Change Jacking Provisions

Use, copying and/or disclosure is governed by the statement on the title page of this document. 9-3

Figure 9-3. Allowable Weight Limits for Jacking C-130J (Short) Airplanes (Sheet 1 of 4)

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9-3e 9-3

Figure 9-3. Allowable Weight Limits for Jacking C-130J (Short) Airplanes (Sheet 2)

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Figure 9-3. Allowable Weight Limits for Jacking C-130J (Short) Airplanes (Sheet 3)

Use, copying and/or disclosure is governed by the statement on the title page of this document.9-6 Change 3

Figure 9-3. Allowable Weight Limits for Jacking C-130J (Short) Airplanes (Sheet 4)

Use, copying and/or disclosure is governed by the statement on the title page of this document. Change 9 9-7