1000 to 540 pto adapter...

Was reading the JD 4630 post down below. Talking about a 1000 pto. Got me to thinking. I was thinking back in the day, we used to grind all of our feed for our hogs using a IH 460. Remember it going down for repairs. Had to use our Case 970, it had a 1000 pto. I just know(or think) we used an adapter to run the grinder/mixer. Seems to me there was a mark on the tach Dad said not go above. Was only around half throttle if I remember correctly. It worked and got the job done. SHON

I use an adapter on 540 rpm irrigation pumps, 1200 rpm on a big tractor will save fuel over 1800rpm on a smaller tractor.

The problem with the early JD tractors: JD 5010,5020,4520,4620,4630, was that they had little torque at lower RPM. They needed some speed to have heir power. I had a JD 5020 for a few years. The only fertilizer spreaders around at that time where all 540 PTO. I had an adapter on it and would try to pull spreader at half throttle. Was a real gutless wonder at the lower RPMs

IH had/has a much better PTO setup with them stacked. I argued with John Deere company men for years telling them that having 1000 PTO on a tractor made it worth much less around here. The early John Deere 8000s where 1000 PTO only. Then they came out with the two speed PTO but you have to use that shear coupling to limit the horse Power. The you turn the electric PTO on too fast and break the shear coupling. Much fun!!!

There's one of those adapters in the toolbox on the 1066.

Years ago the electric wasn't very reliable, so we used the generator quite a bit. Dad had the idea of running the generator with the 1066 at 1/2 throttle to save on fuel.

Only problem with it was the governor couldn't react quickly enough to changing loads at the lower throttle setting. It was bad enough that the generator was too small to begin with.

I ran 100 hp tractors with the 1000 rpm adapter for my 8' Bush Hog running at a throttle setting equal to a pto input to the mower of 540 or so rpm. Worked ok as long as grass wasn't too high and ground level. Experienced the same loss of rpm/inadequate low speed torque as others mention herein.

Mark

970s have a reversible shaft PTO, remove a snap ring, pull out shaft, reverse it, push back in, replace snap ring. Takes ten minutes to change from 1000 to 540.

None of our 70's have 2 lines on the tach, just one at 1900.

Have any problems with the 5010,5020 tearing up the pto clutch ? I thought they were to have weak pto's if used heavy.

I had the JD 5020 I had set at 185 PTO Horse power with a Turbo and intercooler off of a JD 4630. It ran the forage chopper quite well. The 531 engine was a good engine if you did not over lug it. The valve would not take the ehat if lugged and turned up too high of horse power.

The PTO clutches where dry with all mechanical linkage. As they wore you needed to adjust them so they still locked up hard. Most guys would not take the time to do this and when they would slip it did not take long for them to burn out. While chopping hard I might set mine up twice each week.

Not trying to start a fight but are you sure thats a 5020 you're talking about and not a 4520? A 5020 has a hydraulic engaged wet PTO clutch and I dont think the intercooler off a 404 would fit a 531. I have a 5020 that added a turbo to, I use it mostly at tractor pulls but a little around the farm and it has no trouble running 540 implements with an adapter at 1100 to 1400 engine rpm, even a 3940 forage harvester.

Low Budget, you are right that most JD 5020s had a hydraulic clutch. Mine was one of the first 250 made and did not come with a factory PTO. It was ordered bare backed. Then the PTO and three point was added at the dealer later. Then they offered a kit to add a PTO to it. It was set up with a dry PTO clutch in the pressure plate like the early 4020s.

The inter cooler will fit if you machine the holes and port the back adapter. It is not a direct bolt on without modification. Also The JD 5020 that I owned had the big injectors like the JD 5010s. I had the serial number checked twice because about half the parts seemed to be JD 5010 rather than JD 5020.

I sold it over 25 years ago when they where cheap. It was a rather rare tractor in how it was built. It was almost like the thing had been assembled form left over parts at the factory. I knew the tractor from new and it was not modified other than the turbo and inter-cooler. It just was an odd ball tractor.

I have ran into some of them over the years. I have often wondered if they where prototypes that where later sold. I owned a JD 2640 and you had to go to a JD 2550 to find the PTO clutch drum and lines like the one I had. It was only ten numbers under the serial number break. Odd things used to happen.