The new Doosan Z-bar DL250-5 wheel loader and the DL250TC-5 tool carrier model both offer upgrades in fuel management, operator comfort and use the standard Doosan Telematics system. The new models replace the Tier 4 Interim “dash-3” models.
In addition, “an optional hydraulic front differential lock lets you engage the diff locks with a foot pedal so your front wheels lock in and you can drive like a front-wheel drive,” says Mike Stark, Doosan wheel loader product specialist.
Operators can set the auto shutdown system to idle anywhere from 3 to 60 minutes before the engine shuts down. The Tier 4 Final emissions package on the loaders does not require a diesel particulate filter, instead using a diesel oxidation catalyst and selective catalyst reduction aftertreatment. The machines use diesel emissions fluid; Doosan recommends topping off the separate DEF tank at each fuel fill.
Cab upgrades
“A lot of the Dash-5 upgrades are in the cab, including the smaller steering column, which gives you more foot space,” Stark says. In addition to the adjustable steering column, cab upgrades include flush-mount membrane keypads that are simple to clean and make it easier for operators to review and adjust settings.
A fuel consumption gauge tells in real time how much fuel the loader is using. Various fluid pressures can now be viewed on the in-cab dash panel. Outside, two rear LED lights assist nighttime operations.
Service upgrades include additional oil sampling ports. All Doosan wheel loaders have a variable speed reversing fan, handy in dusty environments.
Other options on both models include fingertip three-lever controls, a rearview camera, a hydraulic load isolation system and a heated air suspension seat.
Doosan Telematics is standard on the loaders, allowing you to remotely monitor machine operations such as fuel use, idle time and location; in addition, Doosan dealers have access to machine warnings and alerts, giving them the ability to respond to exact service needs with the correct parts.
