MIL-PRF-29250C
3.5.5 Tires. The type and size of tires furnished shall have adequate capability for the ILJS
operation as specified in this specification when loaded in accordance with 3.8. The tires shall
be pneumatic.
3.5.6 Brakes. Each corner jack wheel assembly shall be provided with a single hand operated
brake that will have the capability to perform as both a parking brake, when fully engaged, and
have a partial (dynamic) braking action as an interim operation which would allow partial braking
in any intermediate position. Brake actuation forces shall be not greater than 270 inch pounds
(30 483 Newton metre (N⋅m)) (15 lb on an 18-inch (7 kg on a 457 mm) handle). Brake devices
of shoes bearing on the tire or ground are not acceptable.
3.5.7 Towing assembly. The towing assembly shall enable the ILJS to be positively steered and
towed in the forward direction, and positively steered and pushed in the reverse (backing up)
direction. The towing assembly shall be attached to the corner jack assemblies when they are
either in the inboard or outboard configurations. The towing assembly shall have a lunette eye
conforming to MS51336 and shall attach to any tow vehicle with a pintle hook height of 10 inches
to 40 inches (254 mm to 1 016 mm) from the ground. The towing assembly shall attach to either
end of the container. The towing assembly shall be attachable/detachable in any operational
configuration of the ILJS.
3.5.8 Caster swiveling bars. Four caster swiveling bars shall be provided. Each bar shall enable
an individual caster assembly to be rotated. Each bar shall swivel any caster.
3.6 Dimensions and clearance. The ILJS, when attached to an ISO container, shall conform to
the following measurements:
a. The ILJS shall pick up the container off the ground (container not resting on skids or
dunnage) and raise the container to a height of 66 inches (1 676 mm) as measured from
ground surface to the bottom of the container.
b. The ILJS shall allow not less than a 10.5 feet (3 200 mm) space between the offset jacks
during flatbed loading.
c. The ILJS shall be designed and configured to meet the requirements of 3.9.7. When
straddling the aircraft loading ramp, the ILJS shall maintain not less than a 3-inch (76 mm)
clearance between the jack legs and each side of the ramp.
3.7 Weight. The ILJS shall be the minimum weight possible with a weight of not greater than
500 lb (227 kg) per corner assembly and overall system weight of 2,200 lb (998 kg) including tow
bar and caster swiveling bars. No individual unit of the ILJS shall weigh more than 227 lb
(103 kg) (see 3.15.1).
3.8 Payload. The ILJS shall transport a 4.25 ft by 8 ft by 20 ft (1 295 mm by 2 438 mm by
6 096 mm), 8 ft by 8 ft by 20 ft (2 438 mm by 2 438 mm by 6 096 mm), or 8.5 ft by 8 ft by 20 ft
(2 591 mm by 2 438 mm by 6 096 mm) ISO container with corner fittings conforming to
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