MIL-T-62735
3.7.3 Moldboard, one-way plow. The actual length of the moldboard shall be not less than 3050 mm (10 feet). The moldboard of the one way snowplow, exclusive of the snow deflector, shall have a vertical height of not less than 760 mm (30 inches) on the left side (streetside) and 1370 mm (54 inches) on the right side (curbside).
3.7.4 Moldboard material. The moldboard shall be of not less than 4.554 mm (7 gage) (0.1793 inch) high tensile steel or a one-piece unspliced sheet of 9.5 mm (0.375 inch) nominal thickness polyethylene material. The polyethylene material shall not embrittle in temperatures as low as -54°C (-55°F), shall not corrode and shall have an abrasion resistance factor at least equivalent to steel.
3.7.5 Snow deflector. The top of the moldboard shall have a snow deflector. The snow deflector shall prevent snow from topping the snowplow.
3.7.6 Moldboard supports. The snowplow shall have two heavy duty, cast steel, full swivel, shoes or wheels. Wheels shall be of the caster type. Both the caster wheels and shoes shall be adjustable. The caster wheels shall have roller or ball bearings. Bearings shall be shielded to prevent the entrance of water and foreign matter. Bearings shall have lubrication fittings.
3.7.7 Push-frame assembly. The push-frame assembly shall attach to the moldboard and the hitch in a manner to provide ample road clearance and permit sufficient oscillation for the snowplow to follow road contour and clear snow evenly.
3.7.8 Positioning of reversible plow. Unless otherwise specified, the positioning of the snowplow moldboard to the right and to the left shall be manual, capable of being accomplished by one man without the use of tools. The snowplow shall have a minimum of two angle adjustments both to right hand cast and left hand cast.
3.7.8.1 Snowplow shear pin. A shear pin shall lock the snowplow in any of the specified five plowing positions. Under normal plowing conditions, the shear pin shall minimize damage to the snowplow and vehicle should the snowplow's leading edge contact a fixed object.
3.7.8.2 Snowplow power angling. When specified (see 6.2), the moldboard shall have power angle capability with controls located in the cab, accessible to the seated driver. Controls shall be identified in accordance with 3.10.5.
3.7.9 Snowplow hitch. The hitch shall be of the push-frame type to attach to the truck and transmit the entire plowing thrust to the truck chassis frame so no plowing thrust is absorbed by the front axle. Front axle hitch supports, when used, shall attach in a manner to prevent
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