Loader lift capacity and ballast

[newbury]

Have you tested your hydraulic pressure?
Kubota's have frequently been delivered with the hydro pressure set low. But usually it's only a few shims or twisting a screw to change it.

lots of links
hydraulic pressure test site:www.tractorbynet.com - Google Search

 

[JerryK]

The deal with ballast hanging on the 3 point, is that it is there for several reasons. While loaded tires, and an overly heavy operator help you with traction/feel good feeling of the rear planted on tera ferma.... it does nothing to remove some of the stress on your front axle. As you pick up a bucket capacity load and lift it, a lot of stress is put on your front end. The weight way ahead of your axle acts like a teeter totter, and actually takes a little weight off your rear axle and places it all on your feeble front end. If your loader capacity was high enough, you could actually lift the rear of the tractor off the ground. This would load the front axle with the load you are trying to lift and all the weight of the tractor. [ and you ample arse ] Placing weight hanging off the rear on your 3pt also acts as a teeter totter, this time with the rear axle as the pivot point. Place enough back there/if your 3pt would lift it .... and the front of the tractor would be in the air. While your front axle will handle the weight of your tractor and load... it probably won't last long. That is why most folks put 3pt weight on when working the loader. The rear axle can handle the weight shift. As far as how much on the 3pt, the more the merrier. Think big and heavy.... unless you like rebuilding front axles.

 

[jb1390]

Recently I had 44 yards of fill sand hauled in that I'm using to level an area that I will use as a parking area. On several occasions, the loader wouldn't pick up the sand. This happened when I stuffed the loader into the pile with the bucket just above ground level and attempted to lift. I can understand that the sand above the bucket was over the loader's "breakout force" of 3430lb and lift capacity of 2041lb (at pivot pin), but what surprised me is that the back wheels of the tractor didn't come off the ground. I only had a 6' back blade attached to the hitch, but the tires are filled with beet juice. Everything that I've read online about using loaders on compact tractors convinced me that I'd need filled tires AND a filled ballast box to keep the back end on the ground when doing serious loader work. So either this isn't true, or else my loader's capacity is well under spec. I'm new to tractors and loaders, so maybe I'm misunderstanding something.

It's lot harder to lift both rear wheels at the same time, compared to only lifting one rear wheel. One rear wheel lifted can cause a number of safety hazards.

If you are lifting material out of a pile, both edges of the loader bucket are held stable. The load is centered, and there is no force attempting to twist the tractor. It is very difficult to lift the entire back end of the machine, but it is not so difficult to lift only one tire, with a load that is offset.

Rear ballast will help to keep both tires planted, with uneven loads and uneven terrain. You were attempting to lift the rear in the most controlled manner possible. Start operating on slopes, with an offset or raised load, and the equation changes pretty drastically. My tractor has been on 3 wheels more times than I can count (with the backhoe or 2k pounds of counterweight), but I have only had it on 2 wheels a handful of times.

As far as moving material, I sometimes find that pulling some of the top of the pile off toward you, so that you are scooping loose material will help with getting a full bucket. If it's a big pile of wet sand, it doesn't surprise me that you can't lift from the bottom of the pile with a full bucket. Alternating lift and curl will sometimes help to loosen the material also, breaking the bucket load free of the rest of the pile.

 

[MatHaas]

Recently I had 44 yards of fill sand hauled in that I'm using to level an area that I will use as a parking area. On several occasions, the loader wouldn't pick up the sand. This happened when I stuffed the loader into the pile with the bucket just above ground level and attempted to lift. I can understand that the sand above the bucket was over the loader's "breakout force" of 3430lb and lift capacity of 2041lb (at pivot pin), but what surprised me is that the back wheels of the tractor didn't come off the ground. I only had a 6' back blade attached to the hitch, but the tires are filled with beet juice. Everything that I've read online about using loaders on compact tractors convinced me that I'd need filled tires AND a filled ballast box to keep the back end on the ground when doing serious loader work. So either this isn't true, or else my loader's capacity is well under spec. I'm new to tractors and loaders, so maybe I'm misunderstanding something.

The biggest factor with a rear ballast is when you're doing heavy loader work on DECLINES. Max load the FEL and drive down a steep hill. Even with Loaded tires, your rear tires will start to lift. They may not come off the ground but they will definitely get "light" and just skid with brakes locked. ALWAYS be in 4wd when doing heavy loader work on a decline. You're probably doing everything on a relatively flat work area, I wouldn't expect the back tires to lift. It's the safety factor when working on hills where a rear ballast is critical.

 

[Oldoak]

While you enter into the pile, you should be making a curl/scooping motion with the bucket. If you drive the bucket into the material, then try to pick it up/curl... you are trying to move quite a bit more weight than the loader is designed. You have the weight of the bucket filled with sand, plus all the sand above it. Scooping up material with your FEL is a learned technique that you will master over time. You will still screw up once and awhile, even stall the tractor out sometimes, but most of the time you will be a pro operator....

A very good explanation of why some people say they can't lift a bucket full of this or that and others say there shouldn't be any problem in doing so. :thumbsup:

 

[sideskraft]

Thanks everyone for all the useful posts and suggestions. All of my loader work is done on flat ground, so no slopes. I've been doing mainly trailer moving recently and it's so much easier than with a pickup, whether I'm using the loader pallet fork/hitch receiver attachment or the 3-point hitch receiver. I'm also very pleased with the sub-soiler "ripper" I bought from Northern Tool, which does a fantastic job of pulling up small tree roots (up to 2 inches), pieces of buried concrete, and other stuff in an area about 30 x 150 that was overrun by scrub trees and bushes and we're now reclaiming. Overall I'm extremely pleased with my tractor and what it's allowed us to do, without hiring someone to bring in equipment and do it.

 

[screamin400]

That is the problem with reading posts by folk with OLD IDEAS.
Whatever politics you care to believe in ...LIABILITY ISSUES have caused loader capacity to not exceed stability.
Even 20 years ago a local dealer had a sales rule of; Won't sell that tractor with a loader unless the customer also orders the rear tires loaded.
Never mind the particular tractor brand and model, that dealer believed that tractor/loader combination was potentially unstable.

Sure, plenty of posts here about the "NEED" to fill a 55 gallon plastic drum with concrete or gravel and hang it on the back - largely "feel good" nonsense.

my 2655 with beet juice and 7'box blade lifts the back end off the ground

 

[Oldoak]

.....................................................................................
Sure, plenty of posts here about the "NEED" to fill a 55 gallon plastic drum with concrete or gravel and hang it on the back - largely "feel good" nonsense.

I take it you never read the Operators Manuals that come with new tractors that emphasize the fact that rear ballast is necessary when operating a F.E.L. Or do you know better than the manufacturers?

 

[Reg]

I take it you never read the Operators Manuals that come with new tractors that emphasize the fact that rear ballast is necessary when operating a F.E.L. Or do you know better than the manufacturers?

My "point" was more about the shear stupidity of overloading a tractor to the point of instability _ just because it CAN be lifted doesn't mean you SHOULD lift it - and CARRYING it is where the real problems starts.

Sure, you can get it "stable" again (to some extent, note only in the fore/aft direction) by hanging more weight off the back, but at what point do you stop ?
{See other thread on how to break a Kubota in half}

I believe in operating within, WELL WITHIN the stability of the tractor and yes, my rear R4 tires are loaded, my set of turfs are not, but I don't do loader work with those.

 

[SPYDERLK]

Recently I had 44 yards of fill sand hauled in that I'm using to level an area that I will use as a parking area. On several occasions, the loader wouldn't pick up the sand. This happened when I stuffed the loader into the pile with the bucket just above ground level and attempted to lift. I can understand that the sand above the bucket was over the loader's "breakout force" of 3430lb and lift capacity of 2041lb (at pivot pin), but what surprised me is that the back wheels of the tractor didn't come off the ground. I only had a 6' back blade attached to the hitch, but the tires are filled with beet juice. Everything that I've read online about using loaders on compact tractors convinced me that I'd need filled tires AND a filled ballast box to keep the back end on the ground when doing serious loader work. So either this isn't true, or else my loader's capacity is well under spec. I'm new to tractors and loaders, so maybe I'm misunderstanding something.

I read through and didnt see noted in the thread:

When you are lifting from at or near ground level the motion of the bucket is forward and up. ... Significantly forward on some loaders.​

This will significantly affect lift from a pile because the tractor must be pushed back or the pile be pushed away for the bucket to rise.​