QA bucket coming off????

brianl · Oct 2, 2007

First let me say hello, as this is my first thead. I have lurked around for some time, but never posted anything. Now to my problem.

I have a 3830 HST with a 723 QA loader. The problem is, when I back drag the bucket to level ground, the QA pins will slide up and the bottom of the bucket will come off. The latches are both tight and not moving. The only thing moving are the beveled pins. Any suggestions on how to correct this.

I had thought about replacing the beveled pin with solid bar stock, and welding a pipe for them to engage into.

MrJimi · Oct 2, 2007

Welcome to the forum and I think your problem is in adjustment of the locking latches
Jim

TalonDancer · Oct 2, 2007

brianl said:
....I had thought about replacing the beveled pin with solid bar stock, and welding a pipe for them to engage into.

Don't! The bevel on the pin is what holds the bottom of any QA implement tight against the QA. So you really need the pins to be beveled.

It sounds like the QA handle mechanism is loose or not fully engaged. When the handles are all the way down, the pins should be locked in place. You can adjust the effort required to lock the pins in place.

Talon Dancer

curtisfarmer · Oct 2, 2007

My L48 came with deffective quick attach which the dealer promptly fixed with bushings or something, now I am having the same problem when my forks are on, the always pop off when putting heavy down pressure on them. I think it has to do with the spring adjustment screws on each handle which regulates how much the pin can move up or down. Still have not figured it out, but need to cause it is dam annoying having to reconnect each time.

texbaylea · Oct 2, 2007

I had the same problem when I first got my L3130. My solution was easy - I disassembled the latch assemblies and added a stack of 5 or 6 washers under the spring on each. Left enough play that I could just manage to lock the latches. Haven't had the problem since. Kubota put out a fix for some models about two years ago. The fix I believe was a tube over the pin under the spring which accomplished the same thing only more elegantly.

Vernon

brianl · Oct 4, 2007

texbaylea said:
I had the same problem when I first got my L3130. My solution was easy - I disassembled the latch assemblies and added a stack of 5 or 6 washers under the spring on each. Left enough play that I could just manage to lock the latches. Haven't had the problem since. Kubota put out a fix for some models about two years ago. The fix I believe was a tube over the pin under the spring which accomplished the same thing only more elegantly.

Vernon

I'll try the washers tonight, that is an easier way to correct the problem than I have come up with. Don't guess you remember what size washers worked best do you? 5/16", 1/2", or 3/4" Hope it works for me too! Thanks

I may just be thick headed, but I don't understand why the locking pins on the QA are not a rigid pins, instead it is allowed to travel with pressure against the spring "like a shock absorber". If I tighten the spring pressure, I reduce the length of pin that is being engaged into the attachment. I have used QA on several of John Deere, and I really like something solid locking the QA.

texbaylea · Oct 4, 2007

brianl said:
I'll try the washers tonight, that is an easier way to correct the problem than I have come up with. Don't guess you remember what size washers worked best do you? 5/16", 1/2", or 3/4" Hope it works for me too! Thanks

I may just be thick headed, but I don't understand why the locking pins on the QA are not a rigid pins, instead it is allowed to travel with pressure against the spring "like a shock absorber". If I tighten the spring pressure, I reduce the length of pin that is being engaged into the attachment. I have used QA on several of John Deere, and I really like something solid locking the QA.

I don't remember what size washer I used. The spring is needed to give the cam over action. The washers limit the range of motion after cam over so that the pins cannot move far enough to disconnect. The same thing could be done with a tube over the pin shaft under the spring. That would be a cut and try thing. The washer fix was quick and easy. Once you figure it out for one pin, do the same for the other.

Vernon

kevinj · Oct 4, 2007

brianl said:
First let me say hello, as this is my first thead. I have lurked around for some time, but never posted anything. Now to my problem.

I have a 3830 HST with a 723 QA loader. The problem is, when I back drag the bucket to level ground, the QA pins will slide up and the bottom of the bucket will come off. The latches are both tight and not moving. The only thing moving are the beveled pins. Any suggestions on how to correct this.

I had thought about replacing the beveled pin with solid bar stock, and welding a pipe for them to engage into.

Take a good look when it is locked. I think you are not locked in right. The pin should slide under a stop so it cannot rise up during use.

brianl · Oct 9, 2007

Thanks Texbaylea,

Well, the washers worked great.

I took 3/8" long piece of schedule 40 1" square tubing and put under the spring, and (3)- 1/2 inch washers on top of the spring. I really think some of these FEL w/QA must have been installed with the wrong size springs.
This prevents the pen from traveling up the spring far enough to jump out.

Thanks Again,

Brian

kevinj · Oct 9, 2007

brianl said:
Thanks Texbaylea,

Well, the washers worked great.

I took 3/8" long piece of schedule 40 1" square tubing and put under the spring, and (3)- 1/2 inch washers on top of the spring. I really think some of these FEL w/QA must have been installed with the wrong size springs.
This prevents the pen from traveling up the spring far enough to jump out.

Thanks Again,

Brian

If the QA is properly locked the pins are under a stop and cannot rise up. If they can rise enough to unhook then the QA or the attachments are made wrong.

brianl · Oct 9, 2007

kevinj said:
If the QA is properly locked the pins are under a stop and cannot rise up. If they can rise enough to unhook then the QA or the attachments are made wrong.

The pins are not under any stops on my QA. Welding a stop on my QA, above the pin in the locked position, might be another good way to correct the problem. For now the washers make the spring compress to the max before the pin has enough travel to clear the latch. They move less than a 1/2" now. Does you QA have stops above the pins from the factory? Is it a Kubota QA?

kevinj · Oct 9, 2007

brianl said:
The pins are not under any stops on my QA. Welding a stop on my QA, above the pin in the locked position, might be another good way to correct the problem. For now the washers make the spring compress to the max before the pin has enough travel to clear the latch. They move less than a 1/2" now. Does you QA have stops above the pins from the factory? Is it a Kubota QA?

I have a Kubota QA and yes it has stops. When you cam the lever over center the spring and bolt go to the outside of the frame and the top of the bolt goes under a small square plate in the corner. If you are not locked right the bolts rest against the stop as opposed to under it where they belong, Thus allowing the pin to ride up and cause a dissconnect.

See the following, you can see the stop over the bolt. I can take a better pic when I get home.

http://www.tractorbynet.com/forums/...1179535630-bucket-hook-pics-5-18-2007-002.jpg

http://www.tractorbynet.com/forums/...7d1179018067-bucket-hook-pics-5-12-07-012.jpg

texbaylea · Oct 9, 2007

kevinj said:
I have a Kubota QA and yes it has stops. When you cam the lever over center the spring and bolt go to the outside of the frame and the top of the bolt goes under a small square plate in the corner. If you are not locked right the bolts rest against the stop as opposed to under it where they belong, Thus allowing the pin to ride up and cause a dissconnect.

See the following, you can see the stop over the bolt. I can take a better pic when I get home.

http://www.tractorbynet.com/forums/...1179535630-bucket-hook-pics-5-18-2007-002.jpg

http://www.tractorbynet.com/forums/...7d1179018067-bucket-hook-pics-5-12-07-012.jpg

Kevin
I checked my tractor this afternoon and its QA does not have any stops. Perhaps this is a change for the L40s. None of the L30 QAs I have seen have a stop above the bolt (pin).

Vernon

Dozernut · Oct 9, 2007

One question, is this a Kubota QA or an ATI? I have an ATI QA and the levers are held on by a lock nut. If you remove the nut, then remove the levers you will find an indent in the lever hole. A roll pin fits through the shaft the lever fits on and the pin fits into the indent. Sometimes the roll pin will shear and if the nut is tight enough the levers will still function but through usage you can work the latch pins up and unhook the bucket. Check to see if you have sheared roll pins.

kevinj · Oct 10, 2007

texbaylea said:
Kevin
I checked my tractor this afternoon and its QA does not have any stops. Perhaps this is a change for the L40s. None of the L30 QAs I have seen have a stop above the bolt (pin).

Vernon

That is interesting, I think the loader is the same part number but I am not sure about the QA. Maybe they made a change to the QA. It seems that there should be stops as the springs will not hold well on the taper pins.

Maybe a dealer can comment about a change or if yours is made wrong.

kevinj · Oct 12, 2007

Do we have any other input or resolutions to the QA isues? I for one am curious about the stop issue that exists or not between various Kubota QA units.

TalonDancer · Oct 12, 2007

kevinj said:
Do we have any other input or resolutions to the QA isues? I for one am curious about the stop issue that exists or not between various Kubota QA units.

FWIW my LA724 QA has the little square stops.

Talon Dancer

texbaylea · Oct 12, 2007

TalonDancer said:
FWIW my LA724 QA has the little square stops.

Talon Dancer

Have you taken an more photos of your QA. I really could not see the stops in the two you included before?

Vernon

TalonDancer · Oct 12, 2007

texbaylea said:
Have you taken an more photos of your QA. I really could not see the stops in the two you included before?

Vernon

That wasn't me. I haven't posted any photos of the QA. And won't be able to until Monday at the earliest.

FWIW they are simply small metal squares welded to the QA so that the bolt attached to the pin can not rise up too much when the QA handle is in the "locked" position. They are not very close to the top of the bolt. But they are close enough to stop the pin from completely detaching.

Talon Dancer

RPK · Oct 14, 2007

Thanks Texbaylea;

I have had the same problem with my L3130 but only with my Bradford forks. I tried your suggestion except I put a couple extra washers on and now it is too tight. But the fork attachment never fell off. I'll take one or two washers off to fine tune it. That's again for the tip.

RPK