Hyd. Pressure

[pontiacman]

I am curious if anyone knows what the pressure should read on a 2009 5740C,
and if anyone has adjusted relief, a procedure.
Thanks

 

[Tul01]

I have a copy of the shop manual from TractorBarry(thanks again) it tells how to adjust the pressure(seems simple enough). I was thinking ours is low, as I couldn't lift a full pallet of wood pellets for the neighbor= 2000lbs. I've never had trouble with lifting anything before so maybe I have never asked it to lift to max. I was planning on checking the pressures, but haven't found out what they should be or picked up the equipment yet. I could email you the manual when I get home this weekend if you want.

 

[pontiacman]

I am having the same issues with large tight round bales. It will get them, but I have to roll the loader back to get the bale off the ground. According to montana the system should run at a working pressure of 2275 psi. I will test it and report back.

 

[Tul01]

I thought i had read somewhere of that vicinity, i just couldn"t find it thanks for the numbers.

 

[Tul01]

Got around to putting a gauge together to fit in one of the rear remotes. 2300 PSI.:thumbsup: Now I'm not sure why I'm only lifting 1500lbs?

Brent

 

[mwb]

Try removing a loader pressure line and check it there. Your supply may be capable of 2300 but maybe there is a problem with your actuator valve and that 2300 is not making it to the cylinders. I am not sure if there is a separate relief on the loader valve or not? If you check the pressure on a lift or curl circuit you will know for sure.

My 3940 (39hp) has increadible lift, your machine must have something wrong.

 

[Tul01]

Thats my next check, to be honest I had thought the overall pressure would just be set too low and now I have to do some real investigating. If it would only warm up above -20C. The loader really has been working fine pushing snow, I have done enough of it this winter!

 

[mwb]

I just checked your forecast (curious is guess) - at least you are not expecting snow :thumbsup: Stinkin' cold though.

My neighbor has the same tractor as yours, if it warms up for you and you are able to check it out let me know if you need any comparison measurements from his.

BTW, can you send me a copy of your manual? Neighbor might appreciate a copy. I will send you a PM now.

Thanks,
Mike

 

[J_J]

I am having the same issues with large tight round bales. It will get them, but I have to roll the loader back to get the bale off the ground. According to montana the system should run at a working pressure of 2275 psi. I will test it and report back.

The closer you get the material to the lift pins, you will be able to lift more. By curling up, you are doing just that.

A pressure of 2500 psi on a 2 in cyl will produce about 7864. The lever principle comes into play here, and the distance of the load to the lift points will dictate the actual lift force.

For each 100 psi increase, the force will increase about 315 lbs.

If you should raise the pressure 2500 to 3000, the lifting force will increase about 1589 lbs. I used these figures as a reference only.

This is computed with a straight on push. If the cyl is angled to the lifting device, the force will be less.

 

[mwb]

The closer you get the material to the lift pins, you will be able to lift more. By curling up, you are doing just that.

A pressure of 2500 psi on a 2 in cyl will produce about 7864. The lever principle comes into play here, and the distance of the load to the lift points will dictate the actual lift force.

For each 100 psi increase, the force will increase about 315 lbs.

If you should raise the pressure 2500 to 3000, the lifting force will increase about 1589 lbs. I used these figures as a reference only.

This is computed with a straight on push. If the cyl is angled to the lifting device, the force will be less.

I think his problem is that the lift is not strong enough but he is able to curl (only) enough to move it. That loader is spec'd at 2500 lbs to full height, 3000lbs to five feet. Round bales shouldn't be a problem!