Re: ORC for an Independent PTO

Posted by Hugh MacKay on May 23, 2005 at 02:10:49 from (216.208.58.169):

In Reply to: ORC for an Independent PTO posted by Jerry/MT on May 22, 2005 at 21:41:12:

Jerry: Most IPTO have a brake to stop shaft when disengaged. I would think the brake is what would suffer the most damage. Most of the implements being built in the past 40 years have built in ORC. I'm thinking now of ones I owned like baler, haybine, forage harvester, etc. I have never owned a rotary cutter, but understand most don't have an ORC. The few times I've run something like this I always made a practice of throttling down before disengaging IPTO. Most of the IPTO out of the 1950s and early 60s brake could be controlled by not completely disengaging PTO. Example of this is Farmalls 300 through to 560. You could feel presure at both ends of PTO lever travel. At the engaged end it was clutch pack and at other end it was brake. There is a halfway point where shaft turns relatively free. The later hydraulically controlled IPTO didn't give you much control over this.

My practice over the years was always throttle down regardless of implement before disengaging IPTO. It served me well, I had little IPTO problems with 6 IPTO tractors and close to 75,000 hours of use. The only exception was Farmall 560D, but one must remember that IPTO was engineered for about 70 hp and my 560 was cranking 90 hp. Those problems had nothing to do with ORC. I think if you use care and throttle down especially with those high momentum implements, you will have few problems.

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