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Thursday 8 December 2016

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New duo expands MF 7400 range into 200+hp category

Bruce Lett

Published 05/01/2010 | 05:00

Two new top-end models have been added to Massey Ferguson's 7400 series, extending the range into the 200+hp sector. Previously, it was a six-model range, starting with the 125hp (135hp maximum power) 7465 up to the 190hp (203hp maximum power) 7495.

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Targeted at professional farmers and contractors, the new additions -- 7497 and 7499 -- bring 205hp (225hp maximum power) and 220hp (240hp maximum power) to the table respectively.

Powering both models is the Finnish-made Sisu engine. This is a 7.4-litre unit configured to produce the desired horsepower for each model. Four valves in each cylinder and common-rail injection keep it emission- and fuel-friendly.

According to MF, the engines, at 7.4 litres, have a much higher capacity than others in the sector, which they say achieves higher pulling power and torque at lower engine RPM. They claim this saves fuel, cuts noise and reduces wear.

Interest in these models has been driven by the standard MF, Dyna-VT continuously variable transmission. Based on the Fendt unit, many would argue the MF-controlled unit is simpler to drive.

The further you push the VT lever forward the faster it goes, and a left-hand shuttle lever under the steering wheel gives you forward and reverse, and allows the operator to increase/ decrease speed as well, which helps free up the right hand for other duties.

There is a range of automatic modes and foot pedal speed controls as well.

MF's dynamic tractor management (DTM) system allows communication between the engine and transmission, and adjusts the engine speed according to the load on the engine to minimise its RPM for optimum fuel economy.

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Similar to its green brothers, MF uses an integrated monocoque chassis. It has also developed a new front-axle support casting that enables a new fully integrated front linkage (IFLS) and front PTO option to be incorporated on the new models.

MF offers an optional dual-control system to automatically raise and lower the front implement, while lift capacity is claimed to be a very respectable 4,000kg at the front end.

Also incorporated into the front axle support casting is MF's QuadLink front suspension, which the manufacturer's claim will improve traction by up to 20pc.

The suspension can be switched on or off and automatically compensates for the additional weight of an implement on the front, providing the same movement without impeding the axle oscillation or the tractor's turning circle.

Standard hydraulics is a 110 litres/min, load-sensing system with the option of a 150 litres/min system.

Electronic linkage control is standard, as is electronic control of the spool valves. For example, an armrest-mounted joystick allows two valves to be controlled when operating a frontloader.

Optional is MF's Datatronic 3, which provides auto-operation within the headland management system by memorising functions and repeating sequences at a touch of a button.

With the likes of front and rear mower combinations in mind, there is also the option of front and rear dual control, which MF says simplifies operation of front and rear-mounted combinations by automatically raising and lowering both implements at pre-set distances.

In the cab, things are very quiet with a claimed noise level of 70dB and, in keeping with the motor industry, automatic climate control maintains a constant temperature in the cab.

MF's Datatronic 3 terminal allows for a high degree of automation, control, monitoring and recording, and the ISOBus option will also enable control of compatible implements.

It can also display images froman on-board video camera, if fitted.

Irish Independent