loader relief valve

[MichiganIron]

What was the final story on the cracks in the loader frame referenced in the forum?

It was not necessarily a structural issue, which is why KIOTI didn't react to it the way some thought they should. The torque tube had an port hole in the backside with a cover plate to access the hydraulic line connections. The bolt holes for the cover plate were located at the corners of the access port...probably not the best idea. The corners can accumulate stress, which caused minor cracks between the edge of the cut-out and the bolt hole (about 1/2"). There was never a concern on the KIOTI engineers part that the cracks would effect the integrity of the loader, but....the issue got a tremendous amount of attention through the ciber-highway and KIOTI issued a Bulletin to install a reinforcing bracket over the torque tube. We never saw a single loader with more than a minor crack at the corner of the access port. The KL130 Loader was re-designed to a round torque tube. But.....the story will continue to be told around campfires and family dinners for years to come.

 

[chuck172]

I know this is beating a dead horse, but I'm curious. If the Kioti brochure says set the relief valve at 2000 psi. to get Lift Capacity to Full Height at Pivot Pins 1,155 lbs. What happens to the lift capacity when you set the prv at 2550 psi?

 

[J_J]

You gain more lifting potential.

2 in bore , 1 in shaft, 2000 psi= 6283 lbs X 2

2 in bore, 1 in shaft, 2550 psi =8011 lbs X 2

550 psi increase on a 2 in bore and 1 in shaft times 2 = 3456 lbs with a straight on push.

Your cyl are pushing at an angle, so the increase is much less.

 

[oldpilgrim]

sounds like a 22 percent increase. Not bad.

 

[TomSeller]

It was not necessarily a structural issue, which is why KIOTI didn't react to it the way some thought they should. The torque tube had an port hole in the backside with a cover plate to access the hydraulic line connections. The bolt holes for the cover plate were located at the corners of the access port...probably not the best idea. The corners can accumulate stress, which caused minor cracks between the edge of the cut-out and the bolt hole (about 1/2"). There was never a concern on the KIOTI engineers part that the cracks would effect the integrity of the loader, but....the issue got a tremendous amount of attention through the ciber-highway and KIOTI issued a Bulletin to install a reinforcing bracket over the torque tube. We never saw a single loader with more than a minor crack at the corner of the access port. The KL130 Loader was re-designed to a round torque tube. But.....the story will continue to be told around campfires and family dinners for years to come.

Thank you. Internet rumors live on forever it seems.

 

[chuck172]

Well, my bubble is burst. Checked the psi and it is 2600. I guess I'll just have to live with the loader. Sure wish I would have bought the dk40 instead. The ck35 is a good machine though.

 

[Coyote machine]

Well, my bubble is burst. Checked the psi and it is 2600. I guess I'll just have to live with the loader. Sure wish I would have bought the dk40 instead. The ck35 is a good machine though.

And all the more reason to not state incorrect information about possible "inferior" metals, as you did earlier in this thread. BTW, loaded rear tires is ballast. So would be a backhoe or ballast box or box blade, etc.

 

[MichiganIron]

You gain more lifting potential.

2 in bore , 1 in shaft, 2000 psi= 6283 lbs X 2

2 in bore, 1 in shaft, 2550 psi =8011 lbs X 2

550 psi increase on a 2 in bore and 1 in shaft times 2 = 3456 lbs with a straight on push.

Your cyl are pushing at an angle, so the increase is much less.

You will not increase the loader lift capacity beyond the rated 1180lbs by having the relief at the 2550psi. That is the relief setting that the loader is rated at. Brochures aren't always the best source of technical data. The loader is designed and rated at approx. 2500psi.

 

[MichiganIron]

You gain more lifting potential.

2 in bore , 1 in shaft, 2000 psi= 6283 lbs X 2

2 in bore, 1 in shaft, 2550 psi =8011 lbs X 2

550 psi increase on a 2 in bore and 1 in shaft times 2 = 3456 lbs with a straight on push.

Your cyl are pushing at an angle, so the increase is much less.

You will not increase the loader lift capacity beyond the rated 1180lbs by having the relief at the 2550psi. That is the relief setting that the loader is rated at. Brochures aren't always the best source of technical data. The loader is designed and rated at approx. 2500psi.

 

[J_J]

You will not increase the loader lift capacity beyond the rated 1180lbs by having the relief at the 2550psi. That is the relief setting that the loader is rated at. Brochures aren't always the best source of technical data. The loader is designed and rated at approx. 2500psi.

CHUCK172 Said this. If the Kioti brochure says set the relief valve at 2000 psi. to get Lift Capacity to Full Height at Pivot Pins 1,155 lbs. What happens to the lift capacity when you set the prv at 2550 psi?

My answer was to that.

If you raise the operating pressure, you will most definitely increase lift.

Did you read this.

Specifications may vary with tractor model, front axle configurations, tire size option and type of attachment, and are subject to change without notification.

KL130 Front End Loader | Kioti Tractors