MIL-S-18141J
3.11.5 Apron. When specified (see 6.2), an apron of heavy rubberized
material shall be furnished and mounted in front of the brush to prevent
excessive dirt and debris from being thrown at the front wheel(s) of the sweeper
and the towing vehicle. This apron shall be mounted to suit the manufacturer's
hood construction and shall not interfere with any sprinkling system.
3.11.6 Reflectors. Sweeper shall be provided with reflectors, mounted on
rear and sides of sweeper, conforming to the requirements of DoT Federal Motor
Carrier Safety Regulations, section 393.26.
3.11.7 Tow bar. The sweeper shall be equipped with a tow bar at least
5 feet long, designed for towing by a vehicle having a pintle height between °
10 and 36 inches above the ground level. Safety chains shall be provided for
securing the tow bar to the towing vehicle. The safety chains shall meet DoT
Federal Motor Carrier Safety Regulations, section 393.70(d). The tow bar shall
have a lunette type towing ring with a 3 inch inside diameter eye and be
fabricated from 1-5/8 inch diameter round steel bar stock. The tow bar shall
be constructed from material structurally adequate for the weight drawn.
3.11.8 Wheels and tires. Sweeper shall be mounted on three or four wheels
of manufacturer's current standard type and size, the front wheel or wheels
being steerable. The pneumatic type tires shall be the manufacturer's first
line first grade. Tire capacities shall be not less than the individual wheel
loadings imposed by the fully loaded sweeper. When tube type tires are
furnished, inner tubes shall be of heavy-duty type, and shall be of proper size
for tires. Tires, rims, and loadings shall be in accordance with Tire and Rim
Association recommendations. When specified (see 6.2), tires shall be either
tube or tubeless type, with nondirectional mud and snow tread (NDMS) or
nondirectional cross-country tread (NDCC). Tire flaps shall be provided for
tube type tires in accordance -with TRA recommendations.
3.11.9 Water tank and spray bar. When specified (see 6.2), a horizontal
leg- or skid-mounted galvanized or polyethylene water tank or tanks shall be
provided and securely fastened to the sweeper. The total capacity shall be not
less than 150 gallons. The tank shall be located so that there will be no loss
in sweeping effectiveness while a full tank is being completely emptied. The
tank shall be connected to an atomizing spray bar or nozzle arranged to cover
the sweeping path ahead of the brush. Pressure shall be obtained by a pump with
pressure control valve. A shutoff valve shall be provided. Means shall be
provided to completely drain the water tank, spray bar, and water pump, and to
The water system shall have a water
disconnect pump drive when not in use.
line filter (strainer) installed ahead of the pump.
3.11.10 Engine. When specified (see 6.2), the sweeper engine shall be a
diesel or gasoline engine having horsepower, torque, and speed characteristics
to satisfactorily meet all performance requirements specified herein. The
gasoline engine shall produce rated horsepower on unleaded gasoline. Engine
shall be furnished complete with all accessories required for satisfactory
operation and shall include at least the following:
(a)
A fuel tank of sufficient capacity for 8 hours normal operation.
(b)
An engine housing.
(c)
An instrument panel with panel light.
(d)
A lubricating oil pressure gage.
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