TM 5-3895-379-23-1
FIELD MAINTENANCE
EQUIPMENT DESCRIPTION AND DATA
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES
Characteristics
NOTE
Characteristics, capabilities, and features are the same for the CB534B and CB534C Rollers,
Motorized, Vibrating Tandem Steel Drums, except as noted.
1. The roller is designed to be operated by one operator.
2. The motion of the roller is controlled by the operator using a steering wheel and propel control lever (joystick).
3. The roller is propelled by a hydrostatic transmission driven by a four-cylinder, turbocharged engine.
4. Compaction is achieved with two cylindrical drums. Hydraulic motor-driven eccentric weights produce
vibration in the drums which enhances compaction.
Capabilities and Features
1. The roller has a static tip angle range of 40 to 50 degrees. The static angle is the slope angle where a
stationary roller will begin to tip over to the side when it is parallel to the slope, in straight-ahead travel
position.
a. Roller operating stability depends upon many factors including operating speed, steering, braking,
terrain conditions, fluid levels, and most of all, operator's skill and judgment.
b. The best operating roller stability indicator is the human operator with the ability to comprehend
working conditions based on the relevant environmental situation and the operator's feel for the
roller to predetermined situations potential hazards and determine the proper operating decisions
to keep the roller in a safe operating mode.
2. Vibration selection allows independent vibratory or static operation of either drum.
3. Two amplitudes of vibration (high and low) are always available to the operator to accommodate the needs
of a variety of operations.
4. A water spray system wets the drum to help prevent hot asphalt from sticking to the drum surfaces during
the compacting operation. Water spray can be constant or intermittent to accommodate the needs of a
variety of environments. Two identical but separate tanks, each with their own pump and filter, are located
on the front and rear of the roller and allow for extended operation between fill-ups. A tie line is provided
allowing the operator to use one pump and tank to supply water to spray both drums in the event of failure
of the other pump.
5. 60/40 articulation simplifies maneuvering of the roller. Sixty percent of the roller is behind the pivot, while
forty percent is head of the pivot. This allows the operator to concentrate on only one drum when entering
or leaving a curve, and decreases the risk of damage when moving roller away from curbs or other stationary
objects.
6. The operator station pivots 90 degrees in either direction to allow the operator to view drum surfaces and
edges during back-and-forth rolling operation. The gauges and controls move with the operator station.
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