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)

*          3.4.10.4  Spare wheel or rim.  When specified (see 6.2), a spare wheel or rim shall be furnished.  When a spare wheel or rim or a spare tire assembly is furnished on a vehicle without

a carrier, it shall be stowed securely on the vehicle for shipment.  The spare wheel or rim shall be

of the same size as that furnished on the front axle of the vehicle.  When a spare tire assembly is specified a spare wheel or rim shall be furnished.

*          3.4.10.5  Spare tire assembly.  When specified (see 6.2), an inflated spare tire, mounted on the spare wheel or rim shall be furnished.  The spare tire shall be of the same size, type and tread design and load range (ply rating) as the tires furnished on the front axle of the vehicle.

*          3.4.10.6  Tire chain clearance.  Tire chain clearance in accordance with SAE J683 shall be provided.  Allowance for spring deflection shall be included.

*          3.4.11  Brakes.  Brakes shall conform to Federal Motor Carrier Safety Regulations

393.40 through 393.43 and 393.45 through 393.52.  Brake linings shall be of nonasbestos

material.

*          3.4.11.1  Air brakes.  The vehicle shall be equipped with a four-wheel brake system consisting of full-air-application brakes.  The brake system, complete with all necessary components, shall include:

(a)   Air compressor, unloader-head type, engine driven and engine lubricated, air or water cooled, and having a capacity of not less than 7.250 cubic feet per minute (cfm)

(b)   Air storage reservoir(s), each tank equipped with drain, and with safety and check

valves between the compressor and the last reservoir tank

(c)   Foot control, suspended or treadle type

(d)   Air control valves

(e)   Air pressure gage, visible to the driver

(f)    Low air pressure warning, visible and audible

(g)   Service brake stop lamp switch

(h)   Automatic moisture ejector

(i)    Automatic slack adjusters on cam type brakes or internal self adjusting brakes on

wedge  and disc type brakes.

*          3.4.11.2.1  Air dryer.  A replaceable cartridge desiccant type air dryer shall be installed in the air brake system.  The dryer shall have the capability of removing not leas than 95 percent of the moisture in the air being dried.  The dryer shall have a pre-cooler and a filter to screen out

oil and solid contaminants.  The dryer shall have an automatic self-cleaning cycle and a

thermostatically controlled heater to prevent icing of the purge valve.

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