Doosan introduces 2.9-cubic-yard wheel loader(
By Patrick Flannery
June 18, 2010 – The new DL220 articulated wheel loader from Doosan is sized to fit the requirements of provincial, county and municipal governments. Applications include a wide range of material handling tasks, from loading and transporting sand and gravel, to snow and storm debris removal.
Built around a Tier 3 compliant, 148-horsepower 6-cylinder Doosan DL06 diesel engine, the DL220 offers an operating weight of 27,205 pounds and a bucket capacity of 2.9 cubic yards. Dump height of 9 feet 4 inches and dump reach of 3 feet 6 inches make truck-loading easy.
The DL220 features a standard bucket breakout force of 22,928 pounds. Static tipping load at full turn is 19,282 pounds. Turning radius at bucket edge is 19 feet 2 inches at the maximum steering angle of 40 degrees. Axle oscillation is ± 11 inches.
Four forward speed ranges provide maximum speeds of 4.3, 7.8, 14.3 and 23 mph. Three reverse speed ranges offer maximum speeds of 4.5, 8.4 and 16 mph. Depending on the application, the operator can choose between standard and economy working modes for either maximum productivity or minimum fuel consumption.
Like all Doosan wheel loaders, the DL220 features a full powershift transmission with manual, automatic and semiautomatic (with “kick down” for first gear) modes. Transmission and engine operation can be easily diagnosed by connecting a laptop computer. Optional front and rear axle limited slip differentials assure positive traction in wet or soft conditions.
Hydraulically controlled, multi-plate wet disc brakes and dual brake circuits provide positive braking power, and brakes are self-adjusting for longer life. A spring-applied/hydraulically released (SAHR) parking brake is mounted on the front axle to prevent the loader from rolling after engine shutdown. An optional electric-powered emergency steering system backs up the hydraulic power steering system in case of a malfunction and a safety device prevents starting the engine when not in neutral.
The DL220 provides operators with outstanding visibility and low cabin sound levels. A roomy cabin, powerful heating and air conditioning system, tilting/telescoping steering column, ample storage space and a comfortable seat also help to reduce operator fatigue. An optional load isolation system provides smoother travel with a loaded bucket.
All routine maintenance on the DL220 can be performed from ground level. Centralized hydraulic check ports and easily accessible drain valves for engine oil and coolant simplify routine maintenance. Remote greasing lubrication ports allow front pins to be lubed from the outside of the machine. The transmission oil filler pipe is located near the articulation joint for easy access and sight gauges for hydraulic oil and coolant levels allow easy daily checks while reducing the risk of contaminants entering the systems. In addition, the radiator fan can be reversed from the cabin to quickly clean out the radiator and hydraulic oil cooler in dusty environments.
Other options include parallel (tool carrier) linkage, a single lever control for travel functions and front-mounted attachments and a hydraulically driven, variable-speed engine fan. The variable- speed fan features an electronic thermostat that constantly monitors engine coolant and transmission oil temperatures.
With the new DL220, the Doosan range of articulated wheel loaders now includes 10 models with bucket capacities from 2.0 to 6.8 cubic yards.