Looking for some advise to confirm it won't damage my L3901 Kubota tractor running a heavy 6' disc.

Best I can tell by using Kubotas land pride web site for matching a disc to my tractor and guesstimated weight of my old rusty disc. I think It will be alright. I'm only planting up about a acre or less of land. The specs in the manual show it lifting more than my disc weighs if I'm interpreting it right.

Thanks for any help!

I’m thinking if it’s too big you’ll just break traction. Don’t let it hop and you’ll be fine.

Hook 'at sumbitch up and givvit hell!

Thanks for the response. I should have been more clear. I'm more worried about the hydraulics from lifting it up. That it may damage the hydraulic system. I'll disc while in 4WD.

It probably won't break it,...but it might get it dirty.

Take this FWIW...it's unlikely it will damage anything. If the hydraulics won't handle it, they probably just won't lift it up. More than likely they will lift it right up as modern hydraulics are way better than the ones when that disc was made.

That disc should weigh less than 1500 lbs, and likely 1200 or less. Look at the specs on most medium duty discs of that size.

You're fine. Too many safety features built into today's tractors to wreck them unless you really try.

Your 3 point is rated at 1985 lbs.

The worst that will happen if you go past that is your front wheels will lift off the ground.

http://www.tractordata.com/farm-tractors/008/0/8/8087-kubota-l3901.html

I pulled a 6 1/2 ' disk harrow that weighed over 700 pounds with a 35HP at PTO tractor no problem.Do your self a favor and buy yourself a 3 point PTO 6 foot rototiller.It will do the same work in 1/4 the time.

How many horsepower is your tractor?

37

1911a1 if your tractor will pick it up it will not hurt it the hyd. system. you can stall the hyd. system all you want and it will not it .I have been stalling hydraulics systems for thirty years with no probs.

I've used a 6' pickup disk for years behind my 2wd Kubota L3250. Anything I've ever tried to pick up with the three point hitch has either gotten picket up or the front end came off the ground. I'm not sure how you'd hurt the hydraulic system on one of those tractors.

left out hurt. beer fugg up

I'll be right with you tomorrow night.

Thanks for all the input!

That's a damn nice tractor, by the way. I'd feel better if you'd get it dirty.

If the tractor front does not lift, you should be fine.

Okay, Point 1: Hydraulic lift systems have high pressure bypass valves built into them. The bypass valve will not the let the tractor lift anything heavy enough to break the lift mechanism.

Point two: lifting 1200 pounds centered 12 inches behind the rear tires is not the same as lifting 1200 pounds centered 36 inches behind the rear tires.

Point three: A disc is fairly heavy and the weight is far behind the drive axle. When lifted into transport mode. It can, in some cases, cause the steer tires to lift and float. It looks like your tractor is equipped with a front end loader. That should be enough weight to keep the front end on the ground. If it wants to float, put some rock or sand in the bucket.

Point four:Tractors have, since 1960 anyway, a traction/lift control adjustment. As the tractor senses increased work load on the lift arms, it will add pressure to the hydraulic lift mechanism which has the dual effect of transferring weight to the drive axle which increases traction, and also lifts the implement out of the ground which decreases load.

Learn where this adjustment is on your tractor and tune it to balance the amount of work/pull against the amount of lift relief. That is what it is there for.

Set it to light and your implement will just scratch the surface. Set it to heavy, and the tractor will bury the disc in soft ground and spin out.

Also, find out if your tractor has a differential lock. Step on the diff lock and lock the two rear wheels together if one tire starts to spin.

I used a bigger disc on my JD 3039r and it's effectively the same size tractor as your Kubota. No problems at all. Zilch.

You won't hurt it lifting, if it's to heavy the tractor will hit the bypass and just squeal a little and you'll know you went over it's designed capacity.

I imagine it would be a good idea to lift a 3-point disk off the ground when turning(sharp)?

That's how I did it with my Massey I traded in on the Kubota.

It should work fine. That’s not a very heavy disk, your tractor should pick it up fine. Always raise a 3 pt hitch disk when you turn.

Thanks to all for the explanations on how the hydraulics work. The reason for my fears was the 3 point lift acted not quit right on my last tractor a Massey 2605 4WD. I always wondered if I damaged it with too much weight.


"It probably won't break it,...but it might get it dirty."

"That's a damn nice tractor, by the way. I'd feel better if you'd get it dirty."

I've mowed twice with it now. I just blew all the grass and dirt off with a blower. I do the same thing to my Hustler ZTM when I finish. Before I had a blower I used a broom to clean off my equipment.

I wish I would have bought a blower years ago now. So many things I can use it for. It makes sweeping off the equipment. porches, my garage and work areas a breeze.

Tillers are great if the land has already been broken.

The disc can work most anything you can drive over, and will chop weeds instead of wrapping them around a shaft.

Tillers also have a very short life span in rocky soil.

There's a place for both. If I had to have one or the other, it would be the rototiller. I have both plus a plow that I use for foodplots, use the rototiller about 10 to 1 for about everything. Been running it in somewhat rocky soil here in Ky for about 15 years, haven't broke anything yet.

For it's size, I'd say it looks quite heavy.

Measure the 3 point lift pins for height off the ground on that disc then check your arms to make sure they lift high enough to pick it up off the ground.

I run a heavier 3 point disc like his on a tractor that's a little too small for it (30 HP) and it's close to not being able to lift high enough to carry the disc.

I'd suggest hauling that disc 20 miles SW of you and dropping it off there before you wreck your tractor.

You know what Larry says, "GIT ER DONE".

Hooked the disc up and done the green patch behind the house. No problems, I also used the FEL to help me clear a 24" dia. dead pine of the trail in my woods.
Thanks to all for the advise.

Looking good

Hey Slumlord, I saved that "panty liner" that was stuck to the tire for you. I'll express mail it to you if you'd like to "lip curl" check it, Heh Heh!

I was about to post what Shooter posted when I ran onto his post.

I pull a 6 1/2' angle disc behind my little 30HP Nortrack/Jinma tractor. I always use 4WD and put some up-lift on the 3-point, so I don't bury the disc. Experiment with the draft adjustment to determine how far down you want to set the implement, then set the lever adjustment.

If my little ChinkTractor will pull my disc your far superior tractor will pull your disc with ease.

I wish I had your small tractor, and you had a better one.

I pull a 10 foot wheel disc, a Bush Hog brand, behind a 45 HP New Holland TC45A. Use it to disc the garden, not running it down to the axles, but the tractor handles it okay. How one of these compact tractors will do what you wan it to has more to do with the tractor weight and the traction it's getting than the HP. Mine has the industrial type tires instead of the agricultural, which I would prefer, but I have fluid in the rears which really helps.