Equipment World Digital Magazine
Issue link: http://read.dmtmag.com/i/748269
I f "low spec" is the first thing that pops into your mind when you hear about a Chinese machine, LiuGong would like you to take a second look. With the introduction of its new Tier 4 Final wheel loaders, the Chinese equipment manufacturer is bringing North American and European customers six of its most technologically sophisticated machines. Designated as the H-Series, the Z-bar configured wheel loaders range in size from 3 to 9 tons and include standard features such as: • Cummins or Perkins engines • Rexroth piston pump • Load-sensing, variable flow steering hydraulics • ZF drivetrains • Quick-coupler, third valve hydrau- lics (for the four smaller models) • Auto-lube • Ride control • Rear-view camera • High back, air ride seat from Grammar • Topcon Tierra telematics • Emergency steering • Hydraulically actuated, on-demand cooling fan Emissions driven The decision to use Cummins or Perkins engines was driven by the emissions regulations on engines in this horsepower class. All these engines use diesel oxida- tion catalysts and selective catalytic reduction systems that require diesel exhaust fluid. The largest model, the 890, also includes a diesel particulate filter. The 835H and 840H models receive the Perkins 1204F engine. The 848H and 856H loaders get the Cummins QSB 6.7. The 877H is powered by the Cummins QSL 9, and the 890H gets the Cummins QSG 12. Load sensing hydraulics Perhaps the biggest change in terms of performance is the switch to closed-center, load-sensing hydraulics. In closed-center, load- sensing systems the hydraulics ramp up only on demand and proportional to demand. Heavy loads get high pressures and maxi- mum flow. Lighter loads get less of both. This conserves fuel and pump life and helps the machine operate smoother. EquipmentWorld.com | November 2016 39 product report | by Tom Jackson | TJackson@randallreilly.com LiuGong steps up its game with new Tier 4 Final H-series wheel loaders LiuGong incorporated black accents into its H-series wheel loaders to distinguish them from the previous gen- eration of Tier 3 models. Cooling fans pull a lot of horse- power away from an engine. By using hydraulically driven, on-demand fans, LiuGong was able to conserve fuel and apply more power to the work at hand.