MIL-T-62491 Trucks, Wrecker: 4540 To 40 820 Kilograms 5-Ton To 45-Ton Lifting Capacity, Modified CommercialThis specification covers all commercial, non-tactical wreckers procured for military use. Vehicles procured under this specification are commercial items which are warranted by the manufacturer as specified in acquisition documents.

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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.