O
Oil Separator (Water)
Trap removing oil from water recirculation.
Oil Temperature Gauge
Gauge displaying hydraulic-oil temperature on the control panel. Prevents overheating and indicates when the system is ready for heavy use.
Oil-Cooler Thermostat
Valve regulating flow through the hydraulic-oil cooler. Keeps fluid within the 40–70 °C optimum temperature range for long component life.
Oil-Drain Safety Tray
Tray positioned beneath oil filters during draining. Captures hot oil safely and prevents environmental spills.
Oil-Filter Pressure Switch
Switch monitoring differential pressure across the oil filter. Illuminates warning lamp when filter approaches blockage threshold.
Oil-Fired Burner
Common burner for bitumen sprayer heating.
Oil-Sampling Port
Port allowing collection of hydraulic-oil samples for lab analysis. Used in predictive maintenance to monitor system health.
On-Board Air Compressor
Compressor powering air valves and tools.
On-Board Data Modem
Modem transmitting operational data via cellular network. Enables real-time fleet tracking and maintenance alerts.
On-Board Diagnostics (OBD)
Chassis diagnostics accessible for engine/emissions codes.
