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maybe a stupid question but...... IPTO and overun coupler re

E

EJ70

Member
I got a MF31 industrial similar to a 175. It has a hydraulic independant PTO. I want to hook it to a pull type woods D080 mower. The mowers blades are belt driven not direct gear box powered. My questions are:
What type of protection do I need for the tractor, over run couper or slip clutch or both? The hydraulic IPTO is what has me undecided. All my past tractors were much older and the pto was not independant on them.
Thanks
 
You don't need one with independent PTO. Over running PTO clutchs were mainly so mower inertia would not keep pushing the tractor with the clutch pedal down with the tractor in gear. 8n Fords, Ferguson TO20 and 30 needed it for example.
 
I agree with Dieseltech about the 8N and such tractors but, I have a 150 with IPTO and use a over-running clutch. The brake has only around 2 square inches of surface area and (I think) it wasn't designed to stop a mass from turning. I believe it's use is to hold the PTO shaft in the off position.
 
I agree. I use a ORC with my slip clutch equipped 6ft KingKutter on my Ford 4610 with IPTO. Saves the pto brake.
 
I have a MF 285 that has torn up 4 ipto with slip clutch and friction disc both. Best bet is kill the motor and wait to stop turning for normal use. The brake on ipto is just to flimsy
 
As some of you have found out to their cost any tractor that drives a high inertia machine is better off with an over-run coupler, especially the early single clutch Fergies and the tractors with an IPTO. The brake just cannot stop those blades from turning! Over in Europe all high inertia machinery has an over-run clutch built into the drive-line of the machine ...just like a baler has.
Sam
 
It's one of those things where you don't NEED it, but it probably is a good idea to save the cost of a repair. We've taken the brake out of our 285 a couple times from running a silo blower when it was all we had because other tractors were down.

As Sam says, high inertia machines should have them built in. Some do, others don't. Not sure on newer machines if it became a standard but it should be.

Donovan from Wisconsin
 
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