To diminish heat and noise in the cab, the hydraulic control valve, pumps and reservoir are positioned on the right side of the machine, away from the operator station. Standard halogen lights provide exceptional jobsite illumination, but they can be replaced with optional High Intensity Gas lights on the boom and upper cab if more illumination is required. Lights are time-delayed to allow safe exit from the machine at night. And to maintain good communication, the cab is two-way-radio ready

Service Improvements

The 390D L uses an electric fuel-priming pump, which simplifies filter changes. A dual-element air cleaner, with a double radial seal, is standard. All filters, except for the high-pressure fuel filter, are accessible from the left side of the machine. Service-safety features include a 24-volt service-light receptacle and wider, 20-inch (500-mm) walkways that provide sure-footed access to maintenance points. 

To facilitate easier, environmentally sound routine maintenance, the 390D L is equipped with protected, valve-controlled fluid-drain ports and self-contained hoses for fuel, coolant and lubricant systems. Easy-to-change spin-on filters are used in the fuel and lubricant systems, and pressurized fluid-sampling ports (in all pressurized-fluid circuits) assure reliable fluid samples. An electronic warning system alerts the operator if the air filter or hydraulic filter is approaching restriction limits.

The Electronic Power Control (EPC) has been relocated from the cab (its position in the 385C) to the air-cleaner compartment. The new location allows the cab floor to be washed without risk of damage to the EPC. For further reliability, the EPC and its electrical terminals are weatherproof.

For further information, customers should contact the local Cat dealer or go to www.cat.com.