THEORY OF OPERATION
This work package explains how components of the Roller, Motorized, Vibrating Tandem Steel Drums work together. A
functional description is given for the electrical system, propel system, steering system, vibratory system and water
Theory of Operation is the same for the CB534B and CB534C Rollers. CB534B Roller is shown.
The roller is designed to compact asphalt and gravel bases for constructing parking lots, roads, landing strips, and other
The roller is controlled by a single operator.
The roller operates in vibratory mode, using twin vibrating drums, as the means for compacting surface material.
The roller operates in static mode in order to smooth surface material.
An on-board water spray system is provided to prevent hot asphalt from sticking to the drum surfaces.
The electrical system operates on 24 volts, negative ground. It is powered by two 12-volt batteries connected in series to
produce 24 volts. The electricity stored in the batteries is used to start the engine and separate accessories. When started,
the engine drives an alternator that produces electricity to both maintain battery voltage and power electrical compo-
nents on the roller.
The engine start switch has three positions (OFF, ON, and START). In the OFF position, no circuits have access to the
batteries' power. In the ON position, all circuits are fully powered. In the START position, electricity is directed from
the batteries through a relay and a solenoid to the starter.
A standard NATO connector is connected to the batteries to allow the operator to "jump start" the roller from another
roller when the roller batteries are low. A battery disconnect switch is provided to isolate the battery from the electrical
system when the roller is not in use.
With the engine running and the engine start switch in the ON position, the alternator produces between 24 and 28 volts
of electricity for charging the batteries and operating accessories. The system is protected against overload by fuses and
ENGINE START SWTICH
BATTERY DISCONNECT SWITCH