Kubota Skid Steer Type Quick Coupler

[tom9961]

I had my dealer add the skid type quick coupler to my new tractor and convert my bucket with grapple to fit this new system. The same day I brought the tractor back from having the 50 hr service done I started finishing the dirt work I was doing before the rain came and I took it for the service. As soon I tried to back drag some dirt the bucket came off! I took it back to the dealer that very same day to fix the bucket problem. The pins that have the cut face on them that slips into the lower bracket on the bucket had both tips broken off of them. Two days later they had replaced the tips and I thought I was ready to go back to work. As soon as I got home and started to scoop some loose dirt the bucket fell off again. I don't have a picture but maybe I can explain my question. The cut face of the pin faces me when I am sitting in the cab. I think what is happening is that with any down and backwards pressure the smooth cut face of the pins simply slid up and come out of the bracket. (Just like a door knob and latch when the bolt pushes against the striker plate it pushes the bolt in so the door can close). But with this quick coupler the pin seems to be backwards in that the pressuee of back dragging or down and backwards pressure pushes the pin closed which causes the bucket to come off. If I try turning the pin around so the streight side of the pin is facing me in the cab the slot for the pin is not wide enough for the pin to close. I know it would help if I had a picture but may someone else has this same quick coupler and will know what I am talking about. If anyone knows what I am talking about - which way is the cut face on your pins facing. Does your bucket or forks come off?

 

[MessickFarmEqu]

We have had to replace the couplers and put on ATI's for 3-4 customers becasue of this. There are certian implements that the coupler does not mount to very well. The standard for these things is very loose, so these kind of problems are not terribly uncommon. Apparently whatever standards commission is making some changes to improve this.

 

[40Kchicks]

The sloped side should face you in the drivers seat. I have never had this problem before even with one of my buckets that fits pretty loose. The locking levers are in the down locked position I assume?

Eric

 

[tom9961]

I think that if I just enlarged the slot the pins fit into so that I could turn the pin around with the slanted side facing the other direction it would solve the problem. What abgout it would that work?

 

[tom9961]

Thanks Eric. The locking arms are down. I worked 15 to 20 loads of gravel during my first 50 hours with no problems. But, now they are a real problem and have broke two sets of pins.
Any other idea anybody?

 

[wushaw]

The bucket maybe not seated all the way down on the loader arm side and the pins are not getting full engagement.

I have to shake my bucket to get it to sit flat against the loader arm side. Maybe yours is doing what mine does and when you lock your pins they are not getting a good bite.

 

[LarryRB]

kubota has a shim kit, along with new springs and pins. Total time to fix, about three minutes each side and no tools needed... The fix works excellent BTW

 

[tom9961]

LarryRB Thanks!
Can you tell me more? Is this something my dealer should know about or will get the answer if they call Kubota tech support.
This is a real pain in the _____.

 

[MessickFarmEqu]

Thats specificly for the L48 coupler, the L series tractors use a different QA. To my knowledge there is no shim kit for that tractor.

 

[KennyV]

Tom… Don’t make the slot any larger /forums/images/graemlins/shocked.gif… The ramp (slanted side) is made that way to hold everything tight. Do you have a heavy spring at the top of the pin? That spring will work with the ramp and locking cam to hold things tight. If the springs are not right it will not hold in the locked position. /forums/images/graemlins/tongue.gif KennyV.