OO-R-2853
3.9 Operating weight and dimensions. The roller equipped with the specified
drum (see 3.12), and without added ballast shall not be less than 20,000 pounds
(lb) (9070 kilogrms (kg)) operating weight. The roller shall conform to the
dimensions as specified in table I.
TABLE I. Roller dimensions.
3.10 Frame and auxiliary systems. The frame shall be articulated to
facilitate steering. The hinge point shall be located at or near the center of
the roller and on the longitudinal axis of the frame. The roller design shall
allow the vibrating drum to oscillate not less than 8 degrees above and below
the drum's longitudinal axis. The frame shall be mounted on two drive wheels on
the rear and a single vibrating drum on the front. The manufacturer shall
provide a lockout device to preclude the frame from articulating during
servicing or when loaded on a carrier for transport. The articulation lockout
device shall not require hand or power tools to install or remove.
Rims, tires, and tubes. Tire and rim sizes shall conform to the Tire
3.10.1
and Rim Association's recommendations for the type and size of the tires
furnished. Unless otherwise specified (see 6.2), the roller shall be furnished
with non-directional traction type tread design tires. Tires shall have a rated
capacity at least equal to the load measured at each wheel at the ground. If
tube type tires are furnished, tubes shall be of the heavy-duty type and of
mating size with the tires. Tires and tubes shall be equipped with air/water
valves.
3.10.2 Brakes. The service braking system, secondary stopping system, and
the parking system shall conform to the performance requirements of either SAE
J1136 or SAE J1472.
3.10.3 Lighting system. The roller shall be furnished with a complete
lighting system, including but not limited to two floodlight type lights at each
end, located so as to illuminate areas where roller may operate in either
direction. All wiring shall be protected against wearing and weathering and
shall be so secured that no section exceeding 3 feet (910 mm) in length is
unsupported. Grommets shall be used where wiring passes through structural
steel sections and sheet metal to prevent chafing of the cable.
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