The new Deutz-Fahr Series 7 TTV range is targeted both at contractors and large-scale farmers and offers tractors designed to provide reliability, efficiency and productivity. The range comprises three models: the 224hp 7210, the 245hp 7230 and the 263hp 7250.
Power is provided by a new six-cylinder, 6.1-litre Deutz TCD engine that meets Stage lllB emissions requirements by treating the exhaust gases with an SCR catalytic converter. The engine design features four valves per cylinder, centrally positioned injectors, a turbocharger, an intercooler and a waste gate, along with the Deutz Common Rail high-pressure fuel injection system that operates at 2,000 bar. Maximum rated power is delivered at an engine speed of 1,900rpm, but the power remains virtually constant between 1,600-2,100rpm.
The Series 7 TTV range is an example of Deutz-Fahr’s successful downsizing strategy that uses a high degree of technology in the design and construction of engines to scale down their size and, with it, overall fuel consumption. These engines can also run on biodiesel fuel, either blended with ordinary diesel or 100 per cent pure.
The TTV transmission is manufactured by ZF and is a tried and tested system that is universally respected for its design and reliability. It provides a top speed of 60km/hr and, when travelling at 40km/hr, allows the engine to run at a fuel saving 1,300rpm. Control is via a joystick that provides infinitely variable speed variations from zero through to the top speed.
For the PTO, the 7210 TTV is equipped with a 540/540E/1000/1000E gearbox with mechanical selection, while the larger two models have 540E/1000/1000E speeds as standard with selection made using an electro-hydraulic clutch that also provides a soft-start pick-up.
An active wheelslip control operates when the tractor slows down after the accelerator is released. It’s a feature that also activates automatic engagement of four-wheel drive and differential lock and is designed to increase safety when transporting heavy loads on steep gradients.
Braking is catered for by the PowerBrake, and there’s the electronic parking brake that provides smart braking in response to the load and data received from the active control of the TTV transmission.
In the hydraulic system there’s a separate power steering pump and a 44 lit/min pump to power auxiliary circuits. For the main hydraulic system there’s a load-sensing pump rated at 120 lit/min (165 lit/min can be specified) which feeds four double-acting spool valves as standard and up to seven if requested. There’s a further option for two spool valves to be fitted at the front of the tractor. All spool valves have timer and flow control functions and their operating levers and ports are colour coded.
Maximum lift capacity for the rear linkage is 10,000kg. The linkage is controlled by the tractor’s EHR electronic management system that offers functions including quick soil engagement, oscillation damping for mounted implements, position selectable transport lock, lift height limiter, rate of drop control and maximum permissible wheelslip setting. The capacity of the optional front linkage is 4,500kg.
The Series 7 TTV range’s new MaxiVision cab, which will be standard on all Stage IIIB tractors of more than 120hp, has all its key operating elements for engine control, driving, PTO-functions and hydraulic control located on the new armrest along with the new joystick control. As standard, the tractor is equipped with a new colour display that helps to give a clear indication of the task each function is responsible for.
This operating concept was developed by Deutz-Fahr working together with farmers, contractors and Giugiaro, one of the leading design companies in the automotive business. The cab features extensive use of glass to provide unrestricted views of the work at hand and high-quality materials are used throughout the cab, not least in the seating department where the driver and passenger can now enjoy even thicker padding.
For more information visit: www.deutz-fahr.com.
