Our 1983 JD 310B is literally worn out pin wise but it still works. If I was going to buy another I would shop with more knowledge naturally but as long as the sucker with start, run, dig and load it is a keeper. The main thing we have done to it was new tires and replaced most all hoses. Often the run time per usage is like 10 minutes. A local welder who has since pasted did an awesome job putting on a new cutter bar and generally beefing up the loader bucket as well a the hoe bucket.
If one has interest and/or need in an old backhoe there are some serviceable units out there. Actually I went looking for a FEL for the 1976 MF 265. The used ones were broken/bent up. I came home with the JD for only $1000 more than the best price on a new FEL for the MF.
We had a 3/4" ratchet set and but added a few large sets of HF wrenches. Replacing one $3 O-ring took us several hours over several days due to being mounted on the side of the sump/transmission housing requiring a lot of steel lines to be removed and reinstalled. Getting all of the water out of was a bear but worth the effort and it has stayed clear for years now. The nice thing about the older units is you can find workable UTF in the $4 a gallon range.
New rear tires were worth the money in our case. 40 year old tires even with some tread left are just to HARD to grip well in dirt and forget trying to use it for snow removable on steep roadways.
Every brand of old backhoes that weaknesses. Old Cases with torque converters and drum brakes comes to my mind. My would slip when hot especially in high range but after I got all of the water out of it that has not been a real issue.
I think my unit was a rental unit many years ago perhaps. The sweet spot after nearly 10 years later would be an old unit that was bought new like by a small to medium size farmer that stayed on the farm most of its life. Yet one with good power even with high wear should be OK to consider in my view.
If using wrenches and getting oily is revolting then pass on old backhoes. With that said I know of a few who will work on old iron at a reasonable rate.
Size is a factor. Our JD 310B is large to me but the 410, 510+ are just plain huge. I would consider the 200 series. We are fixing up the Ford 711 one arm loader in part to have a loader for small places. The JD 310B is just too big inside the lot for our mini horses but the short 3000 with the 40" bucket should be handy in tight places.
Best of success in the hunt. Get your cash in hand but keep it in a safe place that is handy because if you find the right one you need the cash to be ready. Checks do not work so well with private sellers often. Dealers are not likely to have inventory in the $5K to $10K range but if they do cash works well there too.
