Re: A few questions for owners of non-big 3 tractors
DONOTDELETE said:
A couple of questions from a novice researching his 1st. tractor purchase. I want to get info on non-big 3 tractors also so I can make an informed buying decision.
Can anyone who owns a non-big 3 tractor tell me why they bought what they did. Was it the features that stood out on the tractor? Good dealer? Sheer price?
Also, anyone who has owned a non-big 3 for a while now how is it holding up? How is your dealer service? Are you as happy with it now as when you first bought it?
Thanks
(I have spring tractor fever, I think the only cure is to buy one /forums/images/graemlins/smile.gif )
I believe one buys factoring price and specs. The NB3 market seems to me to offer a better value in this regard, altho sometimes a bit less finesse in controls and details of use. The problem I see is in knowing whether the specs are provided and supported to a robust enuf degree that they can be used to their full extent long term without failure. The buyer assumes this - especially as it relates to the power train of the tractor and to the use of implements designed for the tractor. It is assumed that the package is integrated, so to speak.
I have a 2006 Mahindra 7520 4wd equipped w factory approved FEL and BH. It is an impressively capable tractor. However, it has failed in a way that causes me a lot of worry about its suitability to deliver its full spec without self damage. The tractor has had its little problems, many of which are proceeding to resolution far too slowly. The diligent attention of the company is an issue here and speaks poorly of their finish to the sale. Regardless of the fact that I should be spared the aggravation, I have encountered something much worse. - - The camshaft gear broke at 172HRs. Sounds like a fluke until you get the whole picture. This gear drives the cam
and acts as an
idler between the crank and another gear on the opposite side which drives the hydraulic pump and the alternator and engine fan. This is a big hydraulic pump - 17GPM with 5GPM on top of this for the PS. It is hard to turn at full system pressure and the alternator and fan add to this gear load. The kicker is that this is a helical gear. The angled teeth result in a 100# thrust inward where driven by the crank and outward on the opposite side where this "idler" drives the pump gear. The web of this gear is pretty thin and has 4 holes down near the hub that weaken it more. The continuous thrust reversal in use flexes the web and has led to breakage near its hub on mine and a few others. This part of the system is on its second upgrade by Mahindra and the part still looks marginally adequate. It may last forever if you only use it as a tractor, but loader and BH work is much more prone to use full system pressure and cause this gear to flex beyond its harmless limit and eventually break. What if you want to use full system pressure
continuously to drive a hydraulic motor? - - What about the increased load you would put on by naively adding a higher capacity alternator?
Its fixed and running again, but I dont believe this 17GPM spec - a
great selling point - is supported robustly, as a buyer would expect. In my experience hydraulic pump drives dont break - especially if theyre going to take the whole engine down with them. This part of the system is inconsistent with Mahindras image of building heavy and strong.

Any other gotchas lurking???!
larry