If G series stands for greasing, JD’s latest cuts it in half

Serviceability has been improved elsewhere too with transmission and axle oil, and hydraulic filters grouped with diagnostic sample ports in a convenient space. Also, adjustable moldboard circle wear inserts, can be returned to factory specs in minutes. This allows greater precision, particularly when using laser control systems.
The cooling package too 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 for easy access. 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.
There are five models: the tandem drive 670G and 770G, and the six wheel drive 672G, 772G and 872G. Designed and built in the US, all models are available in either standard (G) or Grade Pro (GP) configurations.
Satisfying the operator
The G series lets operators decide how the work gets done. They can choose from traditional mechanical lever controls, or opt for the new Grade Pro system, with eight low-effort 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 system, operators are able to maintain travel speeds, when fine grading or roading.
In addition, Grade Pro also provides productivity enhancing features such as cross-slope control, integrated grade control and automatic return- to-straight. Automatically controlling blade and articulation functions mean both experienced and new operators are more productive. 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 operators to set the front wheels to turn at the same speed or faster or slower than the rear tandems. More and more contractors are finding that a smaller grader with six wheel drive can do the work of a larger tandem drive machine.
Large capacity Tier 3 compliant 6090H engines, with common rail fuel injection and variable geometry turbochargers, are used on all models. With high torque, the G Series are able keep pushing under heavy loads, while still recording low running costs. To make use of all this extra torque, an automatic differential lock can be engaged continuously, although it automatically disconnects when turning.
Smoothest shifting powershift
John Deere claims the G series uses the smoothest shifting 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.
A colour LCD monitor gives pushbutton access to a wealth of machine information, including vital and general 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.
A 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. The switches are sealed keeping dirt, dust and moisture out for greater reliability. More information: 1300 448 2244