John Deere's new 844K Series II Wheel Loader builds on the strengths of the K-Series. Improvements revolve around new axles, improved stability, a 6 boost boost to full-turn tip-load capacity, Rollover Protective Structure (ROPS) certification and low profile tires.

The series' new higher-capacity axles boast standard temperature monitoring and automatic cooling and filtration. In addition, the 844K II employs Hy-Gard oil that allows change intervals to extend to 2,000 hours.

The 844K II comes with four traction-boosting axle-differential configurations:

• Front axle hydraulically actuated differential lock with on-the-fly engagement which is ideal for pushing piles.

• Front and rear axle hydraulically actuated differential lock with on-the-fly engagement providing maximum traction control for tough conditions.

• Auto differential lock that applies when the wheels spin. The operator doesn't apply the differential lock himself.

• Conventional differential lock is a good match for standard load-out applications.

The increased ROPS capacity enables the 844K II series to enter the waste handling market via an optional package that allows the use of solid or foam-filled tires. It also has thicker internal components and is certified to handle 88,000 lbs.

Optional low-profile tires are four inches wider than the previous model, delivering increased traction and reduced ground pressure for added tire life. The 844K II is also equipped with new five-piece rims that provide maximum tire-to-rim contact to prevent bead slippage.

The 844K II is also a Tier 3/Stage 2 emission-certified machine with a 13.5L, 380 hp John Deere PowerTech diesel engine. An Interim Tier 4/EU Stage IIIB engine will be available in May 2012.