LA 853 Q/A dropping buckets - Kubota fix kit

[slowzuki]

I put the factory fix kit on the Q/A and thought I would relate some info.

It went on easily, it basically is a bushing fits inside the spring attached to the top of the q/a pin. With the bushing the pin cannot lift out of the tab spot.

It doesn't fix bad fitting q/a plates but does fix the tendency of the ramp on the pin face to slide up against the spring.

I'll try to get pics or scan in the instructions.

Part number 7J266-99200 price $13.79

 

[Boondox]

I'd love to see some pics.

Pete

 

[chilibit]

I have not had any issues with mine. Is the problem build date related?

 

[slowzuki]

Yes it is, only the early q/a's had a problem. I think the 723 loader was affected too.

The LA1002 loader was also affected.

I haven't have a problem with my kubota bucket but my forks come off with any down pressure on the tips. It broke the tip off one of my pins the first time and now I don't even do the pins up when using the forks. Hopefully I'll see if the kits fixes the problem.

My forks were damaged before I got them, they had pulled the top portion of the q/a plate apart on a too heavy load.

 

[texbaylea]

Do you know if the same kit works for the Q/A on a LA723? I have popped attachments off of mine a few times. A real problem when you have hydraulic connections.

Vernon

P.S. I added washers above the spring to give more compression and that has helped.

 

[GeneD14]

I did the washer fix also. It has worked foor the last 1.5 years. See the attached picture.

 

[slowzuki]

The washer fix is sort of a cheat and doesn't work as well. Unless you add so many washers that the spring bottoms out, the pin can still rise out of the q/a. There isn't a good way to add that many washers and still be able to adjust the pin depth of engagement.

With the kubota kit I added a single washer in with the spring stack so there is zero spring action left on the q/a for my main bucket. It solidly pins in place.

Hard to explain but basicly the kit replaces spring action with a solid acting rod.

 

[CT_Tree_Guy]

Ken, I'm with you. I studied my options pretty carefully, but nothing I could think of would make that QA connection strong enough to keep the grapple in place when I clamped onto a heavy object and put 50 horses to the ground in 4WD low. Pop, pop, pop, grrrrr. Two 3/4" grade 8 bolts did the trick nicely.

 

[slowzuki]

CT, the thing is pretty strong, but kubota chose at first to leave some spring action so poorly built q/a plates would fit. They should have used much stronger springs though.

The washers add preload to make the pins reach a certain load before they move but once it hits that point the springs are no stiffer and just give way.

The kubota kit gets rid of the spring action so the pin physically can't retract like the original one.

 

[texbaylea]

slowzuki

With mine there is only enough spring action to keep the over center latching of the levers. On one of my attachments the springs are fully compressed just before the levers over center, takes a bit of extra effort to latch. The pins, therefore, can only move up 1/16 to 1/8 inch before the spring is fully compressed. Those are eyeball measurements of course.

Vernon

 

[slowzuki]

With that many washers on you likely get the same effect as the bushing kit, but on mine it looks like the spring could spit a coil if heavily loaded like that. The main thing is if it works /forums/images/graemlins/cool.gif

 

[GeneD14]

</font><font color="blue" class="small">( The washers add preload to make the pins reach a certain load before they move but once it hits that point the springs are no stiffer and just give way.

)</font>
That is true if you only use a few washers. I have a stack of 9 washers and once the handle is locked down the spring is almost fully compressed. It can not dis-engage not matter how much prying you do with the bucket.
I will admit that it looks like a "cave man" repair. /forums/images/graemlins/grin.gif

 

[CT_Tree_Guy]

<font color="blue"> I will admit that it looks like a "cave man" repair. /forums/images/graemlins/grin.gif
</font>

Gene - That is so condescending. You might assume, as others do, that we "cave men", with our comparatively small brains, are incapable of operating your fancy computing machines and reading comments like these, but we are, and we have feelings. Please give us the respect that we feel we have earned, as we try to fit into your society. Don't make me come over there and club you.

Cordially, Og


Ok Og, get away from that keyboard, right now! Yes, you! Is there anyone else named Og in this room? Get into your cage, right now, or there'll be trouble! No History Channel for you for ONE WEEK, and I mean it!

OK, that's better. Here, I got you some nice fresh roadkill to chew on ... that's a good boy, get into your cage, there you go ... that's right, eat up....yummy isn't it? ... now you behave while Daddy finishes this post, alright? OK, nite nite ... no, you're safe, no dinosaurs will get you, they've all been turned into inferior lubricants ... now get some rest, you have a big interview tomorrow down at the DMV ... that's a good boy ....


Sheesh, those things aren't easy to train, I knew I should have just gotten another dog ... oh well ... oh man, drool all over the keyboard, yuckkkk .... hold on .......

Ok, that's better - sorry about that, he still has some evolving to do. Ken, I just wanted to say that I misread your post on the Kubota kit and I'll look into that as a better fix for my problem than bolting the grapple to the QA adapter. It was Og's idea, but I like your fix better. The pins got all chipped up from all the times the grapple popped off, but maybe with new pins and the Kubota kit I'll be back in business, and I'll be able to really use the QA for the few times I switch from grapple to bucket. Again, thanks for the tip, and ....

Og, get back in your cage! Og, I mean it, right this minute! Hey, don't you growl at me! Hey, put that club down! Put it down right now! Og? Og?! OG!!?? NOOOOOOO.... ... .. .

(Thump-thump-thump)

......... Let's see, how do you work this thing again? Oh yeah, press little buttons, make funny little words .... (drool)

OK, anyone else have any more cave-man jokes? /forums/images/graemlins/mad.gif

 

[GeneD14]

My sincere appologies to all the cave men out there.

I feel like I am now in one of those Geico Insurance commercials.

 

[slowzuki]

I can be a bit of a cave man fixer too, well, a caveman with a welder! Its amazing the things you can fix with an AC welder... or if not fix, ruin beyond proper repair!

Didn't mean to make fun of the washer fix, the kubota one is way over priced for what it is. I suspect a little chunk of 1/2" pipe or whatever diameter it is could be cut to the right length for almost no cost.