Increased horsepower, fuel efficiency and reliability are just a few of the DL420 wheel loader. This 5.5-cubic-yard wheel loader boasts a breakout force of 47,210-pounds, a full turn tipping capacity of 35,310-pounds and a rugged design built for a variety of material handling applications — such as quarries, mines, road work and site development.
The DL420 offers operators the ability to set upper and lower limits for both the lift arm and bucket stop positions from inside the cab |
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This 5.5-cubic-yard wheel loader boasts a breakout force of 47,210-pounds, a full turn tipping capacity of 35,310-pounds and a rugged design built for a variety of material handling applications |
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The DL420 is now available with optional electric steering to decrease operator fatigue during repetitive cycle operations on the jobsite |
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For those requiring additional dumping capabilities, the DL420 is also available in a high lift configuration, extending the dump height 20-inches above the standard DL420, to 12-feet 1-inch. As an alternative to the standard limited slip differential, the DL420 offers an optional hydraulic locking front differential. Based on ground conditions, the operator can choose to lock the differential manually with a floor mounted foot switch, or allow the machine to automatically engage the system, providing increased driving power when one wheel spins or loses traction and improving machine performance when navigating tough terrain. Another common option for the DL420 is a torque converter lockup clutch. This enables the machine to climb grades easier and faster, increasing productivity as much as 20 percent in certain stockpiling applications, while also providing a five gear transmission instead of the standard four gear setup. Power
The DL420 horsepower has been increased to 354 with a six cylinder diesel engine that has been optimized for use with selective catalyst reduction (SCR) and diesel exhaust fluid (DEF) to comply with iT4 emission regulations. Engines with this configuration are optimized to reduce particulate matter (PM) by operating at higher combustion temperatures and to reduce nitrogen oxides (NOX) with exhaust after treatment using SCR technology. Additionally, engines using SCR systems offer increased fuel efficiency ¢w as much as 16 percent on this machine ¢w due to the engine optimization, which allows for a more complete fuel burn. The new auto idle feature provides additional noise reduction and fuel savings by reducing the working idle of the wheel loader from 950 rpm to a standby idle setting of 750 rpm when the machine in inactive for 10 minutes.
The 775-cubic-inch engine features a high pressure common rail (HPCR) design with direct fuel injection, electronic control and four valves per cylinder. The high pressure common rail fuel system increases the efficiency of fuel delivery by increasing the pressure up to 34,000 psi. The increased pressure allows the injector to inject a finer mist into the engine, which results in a more efficient combustion that in turn produces more torque and improved fuel economy, less noise, lower operating costs and cleaner exhaust. Reliability
Service intervals on the front lift arm pins have increased 500 percent from 50 to 250 hours, reducing operating costs and downtime. Tilt cylinder hydraulic hoses have been rerouted for improved hose reliability, better hose movement and improved visibility to the attachment. More new options for Doosan wheel loaders include a diesel-powered coolant heater to improve starting in cold weather or a block heater that warms the engine coolant before engine startup with an electrical heater. Comfort
The DL420 is now available with optional electric steering to decrease operator fatigue during repetitive cycle operations on the jobsite. A joystick has been added to the left armrest that allows the operator to control the directional movement without having to use the steering wheel. A new door threshold design makes getting in and out of Doosan wheel loaders — and cleaning the inside of the cab — much easier. Interior cabin improvements also include a number of multi-function display panel upgrades on a centralized monitor that allows the operator to view comprehensive machine system information. The centralized monitor displays critical machine information — such as engine rpm, engine coolant temperature, fuel level, DEF level, machine warnings, and the transmission selected gear. A key exterior cabin improvement is the lower front side glass has been widened, providing improved visibility of operations. The DL420 — like every new Doosan machine — is covered by an innovative 48 hour parts guarantee. The program guarantees that if a “machine debilitating” part is needed, Doosan will deliver it directly to the end user within two business days or Doosan will pay for a replacement machine rental. The 48 Hour Parts Guarantee is subject to carrier delivery restrictions and/or governmental agency delays. Doosan Infracore Construction Equipment America, headquartered in West Fargo, ND, markets the Doosan brand of products which includes large excavators, wheel loaders and articulated dump trucks. With more than 100 heavy equipment dealer locations in North America, Doosan is known for an unmatched dedication to service and customer uptime and durable, reliable products. Doosan is fast becoming a global force in heavy construction equipment. To comment on this story or for additional details click on button above. |