I would like the following to replace the review already sent in today as I have clarified some points that may be sensitive to local dealer.
The design is almost ergonomically perfect. The execution is good but a lot of sensor parts are marginal and it is obvious that it was not tested in the field enough. The most basic problem is that you have to rely 100% on your local dealer since there is ZERO contact possible with the parent company. I tried and even my pleading Email came back to me through the local dealer that has no trained mechanic or ANY capability to connect to the computer to interrogate codes or update the software.
My main problem has been sensors especially hydraulic pressure. But there is a sinking feeling when that red STOP ENGINE light comes on. I have even had it come on RED when a suction pressure on the hydraulic pre-filter is too low. The manual indicates that this should be only a YELLOW WARNING but the tractor gets parked in the field for a couple of days again until I can deal with it. Forget the local NH dealer, I have to get a local genius has learned almost all makes of tractors on his own. The mismatch between the operator manual and the real tractor reaction to trouble codes has caused unnecessary downtime and losses that I can not forgive. I have tried to get the software updated to match the operator manual and better diagnostics but I virtually have to flatbed it 500 miles. One chronic sensor I solved myself. I finally realized that AC condenser water was falling right on the pressure sensor and giving false readings so I siliconed the non-waterproof connector. I look at the Internet and find there is a new waterproof connector on the NEWER TS135A's but there is no bulletin available to inform me. And these bulletins can only come through the local dealer who does not have the time for me anymore so I learn the hard way.
More recently, I have a problem where the power randomly goes to 30% and gives no codes. This happened initially Fall 2009. The local dealer can not handle it and I, as owner, have no access to the computer innards. The software tool is proprietary so I am out of luck unless a code gets thrown or I flatbed it 500 miles to a dealer that does have the software tools. I am staying a mile away from any diesel that has common rail injection with a computer and no means to interrogate or troubleshoot it. It is like being blind when troubleshooting. To be fair I have talked to the manager at the local dealership and he does not have the capability to deal with software because of his size, sales and the high cost NH charges him for the software. He figures it would cost close to $10,000 for a laptop, cables and software when he is only selling a couple of these new tractors in a year and then there is the training. A “Catch 22 situation” as how can you expect to sell tractors in a small town when everyone learns that they cannot be supported properly? I wish I had known this when I bought the second hand tractor in Medicine Hat, Alberta with 1000 hours in December 2006. The dealer has been very helpful lending manuals in the past but some of my complaints have not been well received recently.
I believe the tractor may be very good in a bigger farm district where the dealership has enough business to invest in diagnostic capability. The tractor should not be sold through a dealer that does not have that capability.
It is a great tractor when it works but one need lots of good dealer support to keep it running. The loader is also frustrating in that it was to be self-leveling. It is not like it should be and I am sure that is one reason NH went to the Quicke loader 3 years ago. Must have assigned the loader design to junior engineer that reinvented something that was perfected 25 years ago.
I have a brand new Kubota M125X for two years with no breakdowns but I know the axles are only half the capacity of the NH. Kubota is strictly a haying tractor for me and no cultivation unless you use a very narrow implement.