Is it Time for a New Wheel Loader?
Better Roads Staff
Doosan has increased the horsepower of its DL350 to 271 with a five-cylinder, Tier 4 Interim engine that uses selective catalyst reduction technology to offer as much as 16 percent increased fuel efficiency over previous models. The DL350’s lift capabilities have been upgraded, giving operators the ability to set upper and lower limits for both the lift arm and bucket stop positions from inside the cab. The machine has a dump height of 10 feet and can be equipped with optional electric steering to decrease operator fatigue. A joystick has been added to the left armrest to allow operation without the steering wheel. A centralized monitor inside the cab displays engine rpm, coolant temperature, fuel level, machine warnings and other data.
Hyundai’s HL770-9 has a fuel-efficient, low-noise, Tier 3 Cummins QSB6.7 engine with three engine modes. The 277-horsepower engine is electronically controlled for optimum fuel to air ratio and clean and efficient combustion. Other features include a redesigned cab with standard automatic AC/heat, heated rear-view mirrors, hands-free phone, personal storage space and AM/FM radio with MP3 player ports. A 5.7-inch color monitor mounted on adjustable swivel-mounts allows easy machine control. The HL770-9 also comes standard with Hi-mate, Hyundai’s remote management system providing access to service and diagnostic information on the Internet.
Komatsu’s WA380-7’s 191-horsepower, Tier 4 Interim SAA6D107E-2 engine offers up to a 10-percent decrease in fuel consumption, compared to the WA380-6. SmartLoader Logic provides optimal engine torque for the job required and saves fuel by automatically decreasing engine torque when it’s not needed. Komatsu’s large capacity torque converter with lock-up comes standard, providing improved acceleration and hill-climb ability and a higher top speed, all with lower fuel consumption. In addition to a 7-inch display monitor, the loader comes with the Komtrax telematics system.
Deere’s PowerTech 9.0-L IT4 Tier 4 Interim engine uses cooled exhaust gas recirculation technology to meet emissions standards while powering the 744K with the same 304 horsepower as Tier 3-equipped 744K. It features Deere’s Quad-Cool system with a multi-function color LCD monitor displaying onboard diagnostics. The NeverGrease pin joint option keeps joints tight longer, extending pin life and eliminating daily greasing.
LiuGong’s 856IV is powered by a 206-horsepower Tier 4 Interim Cummins engine for big load-carrying power that allows faster cycles on the jobsite. The 856IV comes standard with limited-slip front and rear differentials for better performance in difficult terrain.
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