The 12-28 is a two-track slipform paver with attachable molds and a Cat C9 Tier 3 turbocharged diesel engine. It features a hydraulic-system heat exchanger with electric fan and 16 hydraulic vibrators. Vertical adjustment is controlled from the operator platform with individual or en masse vibrator speed controls. The vibrator circuits have individual variable controls and are pressure compensated. Unit's paving width is 12 feet to 28 feet, propelled by crawler tracks 11 feet 11 inches long and 15 inches wide. Tracks feature sealed, lifetime-lubricated rollers. The 4-foot telescoping frame on the left side is hydraulically controlled.
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