Skid Steer quick tach plate

[Kennebago]

I have a L5030 HSTC with an ANBO grapple mounted n the front -- attached to the "skid steer" plate. I have a recurring problem that when I try to rake in reverse with the grapple it seems quite easy to run into a problem. As soon as I dig in with the grapple the pins (the vertical pins on the skid steer plate that keep the grapple mounted) will begin to slide up and the grapple releases.

When I compare my plate with newer ones I see that my pins are smaller in diameter by about 1/4 inch and come to a sharp edge at the bottom where the newer style pins are larger and flat on the bottom.

So here are the questions. Can that be the problem or is it something else - like poor fit of the grapple - what should I look for?

If it is the pins - can I bore out the holes on my plate and install larger diameter pins -- or will I need to / can I mount the newer style skid plate with the larger pins on my existing loader arms.

Anyone else ever run into this issue?

Also I have L2674 rear mount snowblower - anyone ever sucessfuly mount that on the front of the tractor - any opinions as to whether it is do-able.
Is there a mid PTO kit for that tractor?

thanks -- Kennebago here - fighting the october snows of new england -- 24" last week

 

[RPK]

I'm not sure if this is the same problem but when I first used my Bradco pallet forks with skid steer quick attach the pallet forks fell off in a dumpster I was loading. When I put down pressure on the front of the forks the pins would pop off from the quick attach plate. Someone on this forum suggested that I put washers under the springs on the two levers that engage the pins. I don't know if I am explaining this right but it worked great. Hope this may be of some help.

 

[Rustyiron]

It seems that some attachments are made a little loose, maybe so that they are a little easier to attach. I have had problems (in reverse) similar to yours and have had to weld in some thin shims to tighten things up. I have also made quite a few attachments and thinking that I'd do it right, I made it too tight and it's a bear to attach! Look at your attachment (hanging flat) on the tractor, elevated off the ground and see how much space there is between the part of the quick attach that the pin comes thru on the tractor, and the "mating" part of the attachment. If you have much over a 1/4" you might need to shim it. On the other hand you talked about your pins sliding up. This is completely different. Your locking levers should snap closed in an over center type action, much like a chain binder does. With your pins down you should not be able to move them up with a hammer! Is there some type of friction adjustment there? Prolly a spring with a nut/bolt through the center to increase spring pressure.

 

[SPYDERLK]

It seems that some attachments are made a little loose, maybe so that they are a little easier to attach. I have had problems (in reverse) similar to yours and have had to weld in some thin shims to tighten things up. I have also made quite a few attachments and thinking that I'd do it right, I made it too tight and it's a bear to attach! Look at your attachment (hanging flat) on the tractor, elevated off the ground and see how much space there is between the part of the quick attach that the pin comes thru on the tractor, and the "mating" part of the attachment. If you have much over a 1/4" you might need to shim it. On the other hand you talked about your pins sliding up. This is completely different. Your locking levers should snap closed in an over center type action, much like a chain binder does. With your pins down you should not be able to move them up with a hammer! Is there some type of friction adjustment there? Prolly a spring with a nut/bolt through the center to increase spring pressure.

Some ... perhaps all pin set mechanisms have positive engagement but an additional limited spring driven motion to snug it up within the slightly varied dimensions of attachments. If an attachment is much out - or if the QA positive engagement is too little an attachment may be able to push the pins back up against the springs and come loose before hitting the positive stops.
larry

 

[daveinnh]

Ken:

I have a Kubota L 4310HST that has an ATI Quik-Tach mounted to loader. I had to adjust the pin - spring - release mechanism to fit 3 items: bucket, forks, grapple. Had to select between too loose & too tight- i.e. iterative process.


Does your Kubota brand offer a similar adjustment?

 

[Kennebago]

Thanks guys for the help / suggestions. My pins have springs that serve to control tension. I have not been able to find a setting that fixes the issue - just seems they are always too loose.

Perhaps it is complicated by a "fit" problem as someone suggested - I will double check this - I am pretty sure I checked this a long time ago and found no space. But you have me thinking that perhaps the way I was checking the top end of the skid plate may not have been "set" all the way into the grapple - so I didn't see any space at the bottom - but it was because the skid coupling plate may not have been all the way in at the top.

I will try to check this tomorrow.

Also - am I missing something on the spring adjustment - do I crank the adjusting nut on the springs to make them longer or shorter to apply more tension. The answer seems obvious - but doing the obvious often leads to just proving why it pays to think !! Thanks guys - I will let you know how it goes tomorrow.

 

[Kennebago]

Hello again to all. Well, Ifound a combination of things - looks like a shim may be in order. When I "hang" the grapple things are "sloppy" at the attachment pin end - so will get this measured up and machine myself a proper shim and tack it in place to test the thing before a real weld. Also the the pins have a lot of motion before they fetch up on the stops so will look at washers or perhaps machining up either some spacers or different pins.

I saw in another forum where someone used all-thread and a turn knob to drive a set of pins into place. This would definitely eliminate the issue with backing out --- anyone else ever have experience with this approach?

I may have to put the fix off until Saturday - I have been captured for a few
"chores" by the wife (gotta keep her happy or no new toys) but am anxious to put all this into action. Thanks I would appreciate comments on the all-thread approach

 

[David_Kb7uns]

Have heard of people talking about adding washers under spring or pin so that the pin does not back out, have not had a problem with any of mine yet.

David Kb7uns

 

[SPYDERLK]

Not sure an underspring shim would do any good. Normally pin downward motion is limited by a cross pin thru the real pin . The pin in the pic is fully set - ie, down as far as it will go [but you cant see the crosspin hidden by the torque tube]. The spring holds it there gently, but see that slot and pin up on the overcenter handle? If the big pin rises against the spring, that little pin tops out in the slot pretty quick and stops it from rising any more.
larry
ML 275 SK #2 - TractorByNet.com Photo Gallery

Hello again to all. Well, Ifound a combination of things - looks like a shim may be in order. When I "hang" the grapple things are "sloppy" at the attachment pin end - so will get this measured up and machine myself a proper shim and tack it in place to test the thing before a real weld. Also the the pins have a lot of motion before they fetch up on the stops so will look at washers or perhaps machining up either some spacers or different pins.

I saw in another forum where someone used all-thread and a turn knob to drive a set of pins into place. This would definitely eliminate the issue with backing out --- anyone else ever have experience with this approach?

I may have to put the fix off until Saturday - I have been captured for a few
"chores" by the wife (gotta keep her happy or no new toys) but am anxious to put all this into action. Thanks I would appreciate comments on the all-thread approach

 

[slowzuki]

If you search LA853 or LA852, I can't remember the number, my thread on Kubota's repair kit for the early serial number loaders can be found. The first year or so the pins fit fit on Kubota equipment well but would pop off aftermarket stuff easily. I installed the kit and it fixed my problems with my aftermarket forks.