IV JUST BOUGHT A 30K 1988 CASEIH 956XL 4WD WITH A TURBO FITTED DOSE ANYONE KNOW IF ITS POSSIBLE TO MAKE IT 40K AND 4 WHEEL BRAKEING IF SO HOW?

It would be possible to make it 40K but it would be a big job ,the difference's between 30 & 40K are in the gearing of the splitter gears, which means a major job to get inside and the cost of the new parts would make it uneconomic I would say. As for four wheel braking I'am sure it should be on already does the 4WD work ok anyway?

Dont know but some of the ones with black wheels were 40k were as the silver wheeled ones wer 30k. excellent tractor but god they were slow on the road

hi thank you for your help i dont think its 4w braking think it was standed on 40k only iv since been told of someone that can make it 40k price unowen at moment but inm told its not that expencive the tractor has to be split thought so i might have it done when its ready for a new cluch two jobs at once while its split.and yes the fwd works fine

What shape are the tyres in ? Would changing (all) the wheels be cheaper than modifying the gearbox ? I had one of these years ago, and found the tyres under-spec - is yours on 16.9R38 ? Would it work with 20.8R42 or something. Two words of warning : 1. beware of odd sizes. e.g. I have a tractor on 18.4R42. These are difficult to get, and all the tyres available are old technology so poor for grip and flotation compared with the best; 2. mind your mechanical ratio between rear and front axle.

Hi,

 Are you having any luck with the conversion? I also have an old 30K model and would like to make it 40k, have been told its something as simple as changing a shaft when you split it but I fear it wont be that simple??