Bucket keeps falling off

[k4330]

I have the 853 loader with quick attach on the 5030 I just picked up same as my 4330 had. when I back drag the bucket falls off. I looked at the QA pins and to me it looks as though maybe 2 nuts are missing to hold pressure on the springs.
Does anybody know of a blown up photo so i can see if any parts are missing off the QA levers ? .Thanks

 

[medicshawn]

Here's a picture on my 724 loader.

 

[JOHNTHOMAS]

Don't know if these will help or not. Had a problem with my new L3240. Couldn't get bucket back on because lower pin would not go in bucket bracket. The cross arm was twisted and had to take it back to dealer for replacement. Is yours hooking back together correctly under bucket lip and then pins all they way down in slot?

 

[Cap-n-Cray]

Is this what you are needing? Another view.

Cary

 

[SPYDERLK]

The pins should not be able to rise enuf to clear the bucket slots when the levers are down. There should be a positive stop. Im guessing an adjustable nut on the rod inside the spring coils. Or if not, maybe shim the springs with a washer or 2 so the pins would have to compress them past solid to escape the slots.
larry

 

[k4330]

Thanks for the pictures guys, mine looks the same. I was kind of thinking what Spyderlk is saying. The springs are compressing enough to let the pins come out. I will check to see if it does it with other attachments. If it does I will try to shim the springs.. I find it weird it didn't do it on my 4330, It is the same bucket and it has 850 hard hrs on it.

 

[k4330]

I put a nut between the spring and the block to put more pressure on the spring and it seems to work so far...

 

[kevinj]

Thanks for the pictures guys, mine looks the same. I was kind of thinking what Spyderlk is saying. The springs are compressing enough to let the pins come out. I will check to see if it does it with other attachments. If it does I will try to shim the springs.. I find it weird it didn't do it on my 4330, It is the same bucket and it has 850 hard hrs on it.

The springs are not what keeps the pins down! There are blocks welded to the frame above the pin. Make sure that they latch all the way. The pin must be under the stop when the bucket is installed.

 

[SPYDERLK]

The springs are not what keeps the pins down! There are blocks welded to the frame above the pin. Make sure that they latch all the way. The pin must be under the stop when the bucket is installed.

I agree theres gotta be a positive stop on pin rise when the levers are down. I just dont see evidence of it in the pictures. Could you describe what you are talking about while referring to the pictures?
Thanks,
larry

 

[k4330]

I see the blocks you are talking about on cap-n-cray's picture but mine does not have them. Not sure if my 4330 had them. That could be the problem..or maybe the larger machines do not have them. I would think they should..

 

[kevinj]

I agree theres gotta be a positive stop on pin rise when the levers are down. I just dont see evidence of it in the pictures. Could you describe what you are talking about while referring to the pictures?
Thanks,
larry

Look at caps post. You can see the stop that will be above the pin when latched.

 

[kevinj]

I see the blocks you are talking about on cap-n-cray's picture but mine does not have them. Not sure if my 4330 had them. That could be the problem..or maybe the larger machines do not have them. I would think they should..

My loader is the 724 and it has the stops. There has to be some mechanism to block the pin from rising. Look at some other loaders like yours and see if they have it. Maybe someone here has an 854 that can check.

 

[Cap-n-Cray]

Here is a better photo with it in locked position.

Cary

 

[k4330]

I wish I had them...

 

[kevinj]

I wish I had them...

Go to the dealer.....I think you have a defective QA.

 

[GeneD14]

This topic came up a few years ago. I had the same problem on my L4330 with the 853 loader. Another TBN member said he fixed the problem by stacking several flat washers up to not allow the spring to compress when back dragging, so the bucket stays on. Check out the picture I took after I made this modification. By the way it worked from then on.

 

[GeneD14]

I can't remember the size of washer, my guess was 5/8" flat washers. If I remember correctly you had to have exactly 10 stacked up or it wouldn't work.
I do agree though that Kubota should correct this issue.
Good luck!

 

[gotcha]

This topic came up a few years ago. I had the same problem on my L4330 with the 853 loader. Another TBN member said he fixed the problem by stacking several flat washers up to not allow the spring to compress when back dragging, so the bucket stays on. Check out the picture I took after I made this modification. By the way it worked from then on.

I see what you did to correct your problem and I'm glad it works for you. However there should be some type of a fix by the company that your dealership should be performing for you if it is really is a serious problem that is being reported to the manufacture.
The Gotcha Man

 

[jmc]

Does anybody know of a blown up photo so i can see if any parts are missing off the QA levers ? .Thanks

K4330,

If you still need a picture, I can take one of my 853 loader on an L4330.

BTW, how would you compare the L4330 with the L5030?

John

 

[rockylr]

I'm new here. This is my problem exactly and your posts have helped.