There are five models in the G Series: the tandem drive 670G and 770G, and the six wheel drive 672G, 772G and 872G. All models are available in either a standard (G) or Grade Pro (GP) configuration.
Satisfying the operator
Choose from traditional mechanical lever controls, or opt for the new Grade Pro system, with eight armrest-mounted fingertip levers. Both systems use the industry standard control layout that experienced operators are already familiar with. A steering wheel is standard on both systems, with Grade Pro models having the choice of lever steering as well. With either model system operators are able to maintain travel speeds when fine grading or roading.
Grade Pro also provides productivity enhancing features such as cross-slope control, integrated grade control and automatic return-to-straight. Grade Pro also allows for the seamless integration of your preferred laser control system.
The 672, 772 and 872 (in both G and GP) feature six wheel drive, allowing the operator to set the front wheels to turn at the same speed, faster or slower than the rear tandems.
Large capacity Tier 3 compliant engines with common rail fuel injection and variable geometry turbochargers are used on all models. With high torque the G Series are able to keep pushing under heavy loads, while still providing low running costs. To make use of all this extra torque, John Deere uses an automatic differential lock that can be engaged continuously, and automatically disconnects when turning.
The G Series uses a powershift transmission. With Event Based Shifting it senses the load on the engine, as well as other inputs, to determine the optimum shift time when the operator selects a new gear.
Satisfying the service staff
Serviceability has also been improved; John Deere’s NeverGrease™ technology provides greaseless pin joints in many locations, reducing greasing by 56%, as well as keeping joints tighter for longer operation. All daily checks and refuelling can be done from ground level.
The transmission, axle oil, and hydraulic filters have been grouped with diagnostic sample ports for ease of service. With adjustable moldboard circle wear inserts you can return to factory specs in minutes.
The cooling package is easy to keep clean. The hydraulically driven fan can be programmed to reverse at preset intervals to reduce blockages. When cleaning is required, both the fan and coolers swing out of the way for easy access. The cooling fan speed varies depending on cooling demand, for lower bystander and operator noise levels, as well as lower fuel consumption and faster engine warm up.
The colour LCD monitor gives pushbutton access to machine information, including operating conditions and diagnostic codes. It can also be equipped with an optional rear view camera. The monitor can be located in two different positions, either directly in front of the operator, or on the right hand ROPS post.
The sealed switch module activates all functions, as well as providing keyless start and anti-theft security. Each operator can be set up with their own access code, allowing usage to be monitored where desired