Home Forums Hunting & Shooting Hunter's Campfire 6' 20" disc on Kubota L3901

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.