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|  MIL-T-62491C
3.4.9.3 Traction control. When specified (see 6.2), the vehicle shall be furnished with
traction control on the rear axle (either rear axle for model 6x4 and 6x6). The traction control
shall actuate automatically to insure that power is transmitted to the wheel having traction when
the opposite wheel loses traction. Maximum traction capabilities shall be maintained at all times
under each drive wheel for the life of the vehicle.
* 3.4.10 Wheels, rims, tires and tubes. Unless wide base tires are specified, the vehicle shall be
equipped with single front and dual rear wheels. Except as specified herein, rims and tire ratings
shall conform to Tire and Rim Association or European Tyre and Rim Technical Organisation
recommendations for the type and size of tires furnished. Except when tube type tires are
specified in acquisition documents, multi-piece rims shall not be furnished on front axles rated at
6350 kg (14,000 pounds) or less and on rear axles rated at 10430 kg (23,000 pounds) or less.
Rims and disc wheel sizes shall be the same for all wheels on each vehicle, except for class 50.
Tire size and load range (ply rating) shall be the same for all tires on the vehicle, except for
class 50. When specified (see 6.2), wide base type tires and wheels for the front and rear axles
shall be provided in lieu of conventional front and dual rear wheels and tires. Wide base wheels
shall be interchangeable without the use of an adapter. When specified (see 6.2), disc type wheels
shall be furnished.
* 3.4.10.1 Tires. Tires shall be steel belted radial or, when specified (see 6.2), bias ply. Unless
otherwise specified, low profile or standard profile tires may be furnished. When specified
(see 6.2), low profile tires shall be furnished. Tires shall be tubeless type with highway tread for
model 4x2 and 6x4 and with nondirectional mud and snow tread for model 4x4 and 6x6 vehicles.
Tires shall be of rated capacity at least equal to that specified in 3.2.5. Tires shall conform to Tire
and Rim Association or to the European Tyre and Rim Technical Organisation recommendations.
* 3.4.10.2 Inner tube. When tube type tires are specified in acquisition documents, inner tubes
shall be of the heavy duty type, and shall be of the proper size for the tires furnished. Tube type
radial tires shall have radial tire inner tubes. Tire flaps shall be provided for tube type tires in
accordance with Tire and Rim Association recommendations.
* 3.4.10.3 Carrier for spare tire assembly. A spare tire carrier shall be installed in a readily
accessible location on the wrecker. Threaded fasteners, when used to secure a spare tire in the
carrier, shall be constructed of or plated with corrosion-resistant material. A vertical or horizontal
carrier may be furnished. With the spare removed from the carrier, the deck of the wrecker shall
be free of safety obstacles. The carrier design shall enable removal or mounting of the spare
wheel assembly using only the tools specified in 3.4.17.1. The carrier shall enable the safe
removal and installation of the spare tire assembly from and to the vehicle and carrier without
personnel positioning themselves or any part of their body under the spare tire assembly.
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