loader lifting power and psi

[jbreland]

I've just purchased a bushog brand 446 loader for my
Kutota 4900.
I made the brush/tree puller posted in one of the threads on
here. While trying it I'm disappointed at the size of brush or
tree that I can pull. On private hedge approx 4-5" in dia.
it won't pull it up. I would think it should either pull the hedge
or try to lift the rear wheels of the tractor.
Note , my rear tires are loaded.

I guess to simplify my question, if I try to lift something the
loader can't lift, should it at least try to pull the rear tires off the ground if the load was too heavy.
I just feel like my loader is weak.
If I check the hydraulic pressure on the loader what should I
expect? I don't have a gauge, so I'd have to take it back to
the dealer to have this checked.

any suggestions on how I could know if my loader is performing as it should?
I need a known heavy weight to try to lift but I don't have
anything to try.

thanks
James

 

[beenthere]

An oil pressure gage plumbed into the line is what I used on an older tractor, and it was very helpful to monitor the pressure in the line.
I'm tempted to plumb one in on my existing tractor, maybe even make up a T to add it into the line with quick couplings. Shouldn't be too expensive to do.

Sounds a bit weak to me too, but not sure what the rear end weight is that is counter-balancing the load.
With my Deere 4300 and 430FEL, it will lift the rear wheels off the ground even with the wheels loaded and the ballast box loaded. Keeps me constantly on guard to keep the rear end down. I watch what I try to lift as well.

 

[creeper]

Northern tool now has a 5000lb liquid filled gauge already pipe into a quick connect tee that is the correct size for my deere 790.

 

[B2400]

Welcome to TBN!!! Please fill in your bio, as this helps other members in your area to help you with any local questions. Our local Tractor Supply Co. (TSC) has the 5000PSI liquid filled gauges for approximately $20. You may want to avoid the fluid dampened guages if your unit is stored outside all the time. I used one on a logsplitter that I built and after the first winter the fluid was gone and the guage DNFed on me. I put a non dampened unit on it and it's worked fine ever since.

 

[paccorti]

James,

It all depends on how you are trying to lift the brush. I don't think that too many (if any) compact tractors have the ability to lift their rear loaded tires using the boom hydraulics. When I'm trying to pop brush out of the ground I'll usually use bucket curl to get the job done. With bucket curl I can easily lift my loaded rear tires. Due to the geometery of the loader you can get many more times of force using bucket curl than boom hydraulics. It's probably the same for you.

Depending on the type of brush and soil a 4-5" brush could make a very tough customer. Obviously if you dig around it a bit that can make a big difference. Lastly be real careful messing with small trees and such. One time I had a small 8-10" tree blow over in my yard. I wanted to get it out of the way and for leverage sake I just started pushing on the non-root end. Well even blown over, the base of the tree was still anchored pretty good. The more I pushed I was basically loading up a HUGE catapult with my body in the cross hairs. The tree finally broke before I realized what was happening. If that tree had come over the hood, as they say "forget about it". Be careful.

Peter

 

[KiotiJohn]

I agree with Paccorti. If you're not going in low with the tree getter angles way down and then rolling back, or curling, you're losing the strength of the loader. Simply pusing into the tree and then lifting up on the boom is not that strong.
Rather than pull your rear tires up off the ground, with loaded tires, I would expect your pressure relief valve to hit it's limit and not move any more. What I would do is this:
Pull into the tree, implement down, start curling implement back while pusing into the shrub with the tractor. This way you're not only pulling up, your giving forward thrust, which should help a lot. Good luck and let us know how it goes.
As for the pressure, if you're really having a problem, I'd let the dealer check it out if it's still under warranty. You never know when something you mess with may void the warranty. Just a precaution. John

 

[slowzuki]

it all depends on the loader tractor combo. Our big international will lift the rear with cab, loaded tires and 1500 lb snowblower. This is a 9000 lb or so tractor.

Now the neighbours old Ford just stalls out the relief valve.

 

[Glenn9643]

I felt that the "curl" on my loader wasn't what it should be soon after taking delivery. Took it back to the dealer and the system pressure was a little low; they made a simple adjustment that put it near the "max" and the difference was very noticeable.

 

[Boomerang1]

I have a DX33 with loaded R4s. If I don't put ballast on the rear, the rear tires lift instantly. Even with 400 lbs. of ballast I have to be carefull.