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NE OHIO | What is the story on these two tractors, are they any good for tillage on a smaller operation of about 200 acres? What to look for ? How are the transmissions/ Don't know much about them would be replacing an IH 4186. Thanks!!
Edited by HOGFARMER 6/11/2014 20:45
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| The old saying of "Out of the frying pan and into the fire" might apply to this question, or maybe the other way around. |
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Ohio | Hope you enjoy replacing head gaskets. |
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Embarrass WI | I had a 8630 for a while, was always difficult to shift even after replacing cables. I think one might work for a smaller operation, just use it to do the work you might do with a 175 HP mfd tractor. Don't overstress it and it might(might) run a long time.
8630 has isolated front differential, 8640 has diff relubed with trans fluid(I've been told).
There are better choices, there is a reason they sell so cheap. |
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ND | If you are just doing tillage buy a older versatile, 850, 835, cheap horsepower and won't drain your wallet like the boat anchors will. |
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Crawfordsville, Arkansas | For 200 acres you will be fine with either. Heck a 7520 would be good.
Just curious, but why would you need such a large tractor for 200 acres? |
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Sunburst Montana | Wouldn't be my first choice from that era but like Detroit said, they will work fine for 200 acres and you will have better hydraulics and most likely a PTO vs a Versatile. For as bad as they seem to be on agtalk, there are still several of them being used around here some with a lot of hrs giving their owners good service. |
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IL | Have an 8630 and the neighbor has an 8640, I've run both side by side. On the 8630 the common problems are the fuel lift pump (most have been replaced with an updated style), transmission gears (factory recall/update from straight cut to helical cut), and front differential on the non door side (sealed differential and people never check the gear oil till a seal goes out, the oil drains, the gears hatter, the planetary keeper bolt backs out, then the axle wheel tires and all comes out of the housing going down the road). The problems with both would be cracked pickup tube in the fuel tank sucking air (deere has a polly insert that can be slid in without removing the tank), engine block cracking (was told by a deere rep that I trust it's from frame flex and I've seen 3 or 4 with stiffener plates bolted down the outside of the frame), and last engines blowing head gaskets because guys turn up the power then expect the tractor to do work they were never designed to do.
Personally I prefer the 8640 because of the continuous oiling front differential, but both are solid tractors if maintained. Most of the value of both are based on the condition of the tires. Point of interest would be pivot pins and steering cylinder pins. Our tillage equipment is all sized to our 4840 so the 8630 has no problem pulling anything we own, probably why it's never been overhauled and runs strong. Many of both models were updated to the 50 series engine in the late 80's and 90's due to aforementioned block cracking. |
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North west MN | Versatile! 800 850 875 and such |
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Northern Indiana | I have an 8640 with 5100 or 5200 hours on it that I am considering selling, if interested. Been good to us. |
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ecmn | for 200 acres I would be looking for a nice 4250/4450 instead. |
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Macon, IL | +1 |
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NE ND | Father ran an 8640 till 8000 hrs was a very good tractor for us. It had an inframe once but a good unit. Also ran two 8650s for many hrs with little to no major problems. They all get beat up on here pretty bad so take it with a grain of salt. I doubt they were a good tractor to be hooked to a ripper at 4 mph and full power all day, but dragging a field cultivator around at 6 mph they were very good IMO. |
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NE OHIO | Reallly Appreciate the info, how do you tell the 50 series engine from what came in them? |
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Marion,ks | I have 2 8650s both have been pretty good tractors, must be how we use them. We try not to overload them and pull a little smaller equipment and run a little faster. You can tell a 50 series block by the casting # on the crank case, also most of them have a factory coolant filter on them. We have replaced the head gasket on each of ours 1 time and have run each of them 500+hrs since with no problems interesting fact they both failed when the tractors were 23yrs old one had 6000 hrs and other had 3500hrs 1984 and 1988 tractors, other than that they have been about as trouble free as our other JD 2wds of that era.We run a oil analyis on ours every oil change and thats how we caught the head gasket issue before any other damage was done. All the other posters brought up good points. |
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JD 8630 &8640
