MIL-T-45380 Trucks, Maintenance: Earth Auger, Turntable Base, Diesel Engine Driven, 28,000 Pounds Gvw, 4X4, Modified CommercialThis specification covers an earth auger with a turntable, mounted on a diesel engine driven, four wheel, four wheel drive, modified commercial truck chassis having a minimum gross vehicle weight GVW of 28,000 pounds for normal operating conditions.

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MIL-T-45380E(AT)

3.4.5.1.1 Speeds. The vehicle shall be provided with not less than eight forward speeds. The vehicle may be furnished with an auxiliary transmission.

* 3.4.5.1.2 Transfer case. A transfer case shall be furnished. Unless the transfer case is equipped with devices which compensate for differential torque and speeds between front and rear axles, the transfer case shall provide for driver selection of either two-wheel or four-wheel drive. When furnished, interaxle compensating devices shall provide for positive transfer of power to all driving axles. When a two-speed transfer case is furnished the speedometer shall read accurate speed with the speed selector in high or low range.

* 3.4.5.2 Clutch. The clutch shall be the largest capacity clutch offered for the type and class vehicle and engine furnished with torque capacity exceeding the maximum delivered engine torque. The clutch lining shall be asbestos free.

* 3.4.5.3 Automatic transmission. When specified (see 6.2), the vehicle shall be provided with an automatic transmission. The transmission shall include a hydraulic torque converter and not less than four forward gear ratios. Normal driving range selector position shall provide not less than four gear ratios without movement of the selector. The transmission shall be provided with a power takeoff opening. The input torque capacity of the transmission shall be at least equal to the maximum torque delivered by the engine.

3.4.6 Driveline components. Driveline components shall be adequate to transmit the maximum delivered torque of the engine, as developed through the maximum gear train reduction, in proportion to the number of driving axles furnished.

3.4.7 Frame. The chassis frame shall be the manufacturer's standard for the vehicle furnished. Chassis frame rails shall not project beyond the rear end of the body.

3.4.8 Suspension. The vehicle shall be equipped with a suspension system with components having a rated capacity at least equal to the load imposed on each member measured at the ground with the vehicle loaded to specified GVW. When the suspension capacity is rated at the spring pads, unsprung weight shall be deducted. The vehicle shall be equipped with hydraulic double acting shock absorbers at the front wheels.

* 3.4.9 Ax1e. Axle ratings shall be at least equal to the load imposed on each measured at the ground, with the vehicle loaded to specified GVW. When specified (see 6.2), the wheel bearings and axle spindles shall be oil lubricated. The hubcaps, except for driving axles, shall have a window for visual determination of oil level. Provisions for venting or withstanding internal pressure buildup and for replenishing the oil supply shall be provided.