broke cylinder la463

[wfontjr]

i cracked the bottom of the curl cylinder of a kubota la463 fel, where the piston exits, the crack runs from the lip back about 2 inches, i assume replacement is the best option, would a weld work? any idea what a kubota piston cost these days?

 

[bigballer]

i am not sure about welding don't have experience in that area but i am curious how this broke... do you think it was stress over time or a one-time "event" that caused it?

 

[Willl]

I'd replace it. Tough to kill a crack.

 

[wfontjr]

mostly likely broke it horseing around when i should not have been, basically using the fel like a dozer, digging up gums, privet, etc on land making food plots the last few months, at first you take it slow, but after awhile you try to push a little harder, and bad things happen, friday afternoon late getting dark, not sure if i had bucket at a bad angle, i saw fluid spraying so i backed out, took a few minutes to find the leak, had to be curling the bucket to get a spray

if i read correctly the warranty on the loader is 12 months, correct?

 

[radman1]

If it is still under warranty, try getting it fixed by warranty. If the crack is very narrow, you could try welding it. Maybe try closing it tight with hose clamps and welding. You don't have much to loose by trying to weld it. The ends of cylinders are welded, give the side a try. If you weld it, get the piston and seal away from the heat of the weld. I would guess an OEM cylinder will be $$$.

 

[J_J]

Is the cylinder rod bent ?

 

[wushaw]

mostly likely broke it horseing around when i should not have been, basically using the fel like a dozer, digging up gums, privet, etc on land making food plots the last few months, at first you take it slow, but after awhile you try to push a little harder, and bad things happen, friday afternoon late getting dark, not sure if i had bucket at a bad angle, i saw fluid spraying so i backed out, took a few minutes to find the leak, had to be curling the bucket to get a spray

if i read correctly the warranty on the loader is 12 months, correct?

Yup 12 mo on attachments.

 

[wfontjr]

i believe the piston is still straight all though at the time i did not look to see, i left it at my land, i will go up next weekend and bring the tractor back

 

[wfontjr]

local kubota dealer wants $600 for the cylinder, where is the best place online to order one? any idea what the specs are, i will not be able to pull the old one off till saturday when i go to where i left the tractor

 

[J_J]

local kubota dealer wants $600 for the cylinder, where is the best place online to order one? any idea what the specs are, i will not be able to pull the old one off till saturday when i go to where i left the tractor

You may or may not find a lesser priced cylinder, but you could probably replace both of the cylinders so as to have a matched pair. Another idea is to contact Baileynet.com and see if they have a cylinder or can they make one for you. I know you can specify type cylinder, length ,rod size, end fittings, etc. You might find two of the same cylinders at Hydraulics Surplus.

 

[Harvest Moon]

Looks like part #7J266-64010. $610.75 on Tractorsmart.com, Kellerkubota.com and Messicks.com.

Your local dealer is probably the best option, at least you'll save on shipping. Boy, I'm not sure I was expecting it to cost that much, I think I'll be more careful with mine from now on.

 

[J_J]

This is from Baileynet.com.

This is loader cylinder. I think I would check with them unless you just want a factory cylinder. Look at the ends of your cyl, measure the diameter, and bore and stroke and ask them what they have.

Hydraulic Cylinders 116-721 Detailed Information


http://baileynet.com/index.php

 

[LD1]

The 2" by 19 5/8 cylinder on baileys is probabally your best way to go. Just buy two of them.

I looked at my loader manual and they list the lift and the curl cylinders being the same at 45mm x 476mm or 1.77" x 18.7" so the baileys is real close. Being 2" it'll give you about 25% more force.

 

[kennyd]

Being 2" it'll give you about 25% more force.

But at a slower speed.

 

[J_J]

In a 2 in cyl, if the rod size gets larger, there is less surface area, and the retraction speed will increase, and be faster. The retraction is always faster than the extension. In a 2 in cyl, the extension speed will stay the same, since you are still pushing against the same 2 in bore.

 

[LD1]

But at a slower speed.

You are correct but due to the marginal increase it won't be much. The volume of the 2 factory cylinders is .39 gallons. The 3400 has a 6.5gpm pump. So the factory raise time is 3.7sec. The volume of 2 of the 2" cylinders is .49 gallons so it would increast the time to raise by 1 second to 4.7sec.

 

[wfontjr]

thanks for the info

 

[Harvest Moon]

I probably should take a closer look but I don't have access to my machine at the moment. I think there is a stop on my loader arm that meets the bucket at the full dump position. It seems that way anyway, when I dump to fast, something slams together and makes a pretty good bucket shake.

Is there any concern that the longer cylinder would damage something at full extension?

 

[J_J]

I probably should take a closer look but I don't have access to my machine at the moment. I think there is a stop on my loader arm that meets the bucket at the full dump position. It seems that way anyway, when I dump to fast, something slams together and makes a pretty good bucket shake.

Is there any concern that the longer cylinder would damage something at full extension?

They make these to limit cylinder travel, called stroke control.

Hydraulic Cylinder Components, Products

 

[LD1]

I don't think it would hurt anything because on the 463 loader, it has the mechanical stops (what you hear bang when you full dump) that stop the bucket before the cylinder is out of stroke.

I'm not sure if it's possible but you might want to look into putting your lift cylinders on the dump as they are the same. Then you could use the larger cyls on the lift. Not sure weather it can be done, but if everything clears, you'll get a little more lift height. And more lift capacity.

Just an idea.