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 TB 740-97-4
combination of NON-OZ and OZ tires less than 2 years old and any tire 2 years old or older, all tires in the lighter will be
protected during storage as specified in (a) above.
(3) Preparation prior to placing bag over tire and wheel assembly.
(a) Slack allowance. Lighters will be raised for installation of bags. Care will be taken to assure that sufficient
slackness is left in the bottom of the bags when the lighter is lowered to the ground. The bag will be positioned in a
manner which will prevent obstruction of drain holes when bag contacts ground surface. If the enclosed tires and wheels
are to be stored on gravel, turf, or unpaved areas, a piece of fiberboard or other suitable material, of sufficient size, will be
placed on the ground surface under the bag to prevent rupturing the bag.
(b) Cleaning. Prior to installation of the polyethylene bag, each tire and wheel assembly will be cleaned in
accordance with process C-1 of MIL-P-116 to insure removal of all foreign objects imbedded or lodged in tire treads. Tires
will be thoroughly dried in accordance with any applicable drying process of MIL-P-116.
(4) Installation of bags. Polyethylene bags will be placed over the tire and wheel assembly and positioned in a
manner that will permit securing to axles. Excess material at the bag opening will be folded and formed to the contour of,
and against the axle assembly. Bag will then be secured to the axle assembly, using rope conforming to class 2, size
(circumference) 5/8inch of T-R-571. Corners of the bag will be folded against the installed bag and secured in that position
with tape conforming to type IV of PPPT-60.
(a) Drain holes. Two drain holes, approximately /4 inch in diameter, will be provided in each bag. Drain holes
shall be positioned at the lowest point of the installed bag, as illustrated in figure 3 of MIL-T-46755(MO).
(b) VCI application. Crystalline volatile corrosion inhibitor (VCI) or treated carrier type VCI will be used within
each polyethylene bag. When crystalline VCI is used, it will conform to type I of MIL-I-22110, dicyclohexyl ammonium
nitrite formulation, FSN 6850-368-5233. Twenty grams will be blown into the polyethylene bag by any suitable means.
When treated carrier VCI is used, it will conform to type I, class 2, style B of MIL-I-3420, dicyclohexyl ammonium nitrite
formulation, NSN 8135-00-664-4012. One strip, 12 inches wide, and length equal to the circumference of the tire plus 2
inches, will be placed around the circumferences of the tire, VCI side out, per polyethylene bag and will be secured in place
with tape conforming to type IV of PPP-T60.
(5) Surveillance of bagged tires. Periodic surveillance of storage areas, where lighters containing bagged tires are
stored, will be maintained to determine condition of bags. When bags are loosened due to severe wind storms, the bags
will be retightened at the ties. All small tears will be sealed with tape conforming to type IV of PPP-T-60. If severe
damage occurs, the tire bag will be replaced.
K-3
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