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Sunday 22 January 2017

Baby Puma a short story

With its shorter wheel-base, the CVX is nimbler on its feet than bigger siblings, says Bruce Lett

Bruce Lett

Published 21/09/2010 | 05:00

Three new short wheel-base Puma CVX models mean CaseIH can offer a full range of Puma CVX models, similar to their existing range of Steyr-based models
Three new short wheel-base Puma CVX models mean CaseIH can offer a full range of Puma CVX models, similar to their existing range of Steyr-based models

CaseIH has just launched three new, short wheelbase models in the lower horsepower end of their Puma CVX range. Despite the fact they have just been launched, CaseIH will have one (a Puma CVX 160) at this year's National Ploughing Championships along with a 6088 Combine with 24ft header, Magnum 310, Puma 180, Maxxum 125 and JXU 115 with loader.

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CaseIH is in the unusual situation that currently they are offering two completely different ranges of CVX tractor, one Fiat Power Train based and the other ZF/Sisu based. It is inevitable that the latter will be discontinued but when this will happen is not yet clear.

So what do the new Puma CVX models feature exactly?

The three new Puma CVX models are the Puma 130, 145 and 160. They have power ratings of 131hp, 146hp and 160hp respectively. With Power Management, these figures rise to a maximum of 171hp, 188hp and 203hp. The Engine Power Management system gives an increase in power of up to 22pc for transport or PTO work.

Changes

One of the most significant changes to be introduced (from 2011) on the new Puma CVXs is CaseIH's EfficientPower technology. This is essentially the addition of the Selective Catalytic Reduction (SCR) to the exhaust system of the tractor enabling the engine meet Tier 4 emission regulations.

All of the new models are powered by a 6.7-litre, six-cylinder, common-rail turbo-diesel engine and the SCR technology comes from parent company Fiat's truck wing, Iveco, where it has been successfully used for a number of years.

The upside to SCR technology is that it is more fuel efficient than the alternative 'emissionising', Exhaust Gas Recirculation (EGR) system. CaseIH are quoting a fuel saving of around 10pc with SCR and the EfficientPower technology compared to conventional engine technology.

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With SCR, the engine runs cooler and under less load, but the downside is that the liquid required for SCR (Ad-Blue or similar) has to be carried in addition to the fuel. However, the quantity necessary is about a tenth of the proportion of the fuel load.

The CVX transmission on the three smaller Puma models also differs from that used in the bigger models. The larger Puma CVX models use four forward and two reverse range gears in their CVX transmission, while the new short wheel-base models use just two range gears for forward and one for reverse.

CaseIH say that two forward ranges on the smaller models are still capable of providing a high degree of mechanical drive on the short wheel-base models, plus it makes the transmission small enough to be fitted into the smaller machines.

The lifting capacity of the new models is 8.3 tonnes, ample for pretty much everything, and the hydraulic pump capacity is 140litres/minute. CaseIH say that up to eight hydraulic remote valves can be fitted.

In the cab, the new MultiControl armrest is standard, with the main functions, such as transmission settings, cruise control, forward/reverse shuttle, three-point linkage and remote valves controls all at the finger tips. Also integrated into the armrest is the Integrated Control Panel (ICP) with touch- sensitive keys for controlling various tractor functions.

A joystick for controlling loader function or rear electronic valves is also standard. Alternatively, mechanically controlled valves are also available.

Externally, CaseIH say the rear section of the bonnet is now much narrower improving the view of the working area. They also say the shorter wheel-base provides much better manoeuvrability and a smaller turning radius in comparison to their bigger Puma siblings.

Irish Independent