LA435 Loader keeps uncoupling

[Cadman500]

Has anyone had this problem?
I only have 28 hours on my B2601 with a LA435 loader And the dang loader keeps uncoupling.
its happed 4 times now and has now damaged my hood.
it happens when scooping or carrying a load.
I have checked and it looks like it is locked all the way.

 

[D2Cat]

Do you pick up the bucket a couple of feet at look at the pins to see that they are in fact in the holes properly? You may have had one pin not locked in and the bucket came loose and bent the attaching plate so the pin can not lock (until you get the plate back into the same plane as the other side).

 

[Cadman500]

Do you pick up the bucket a couple of feet at look at the pins to see that they are in fact in the holes properly? You may have had one pin not locked in and the bucket came loose and bent the attaching plate so the pin can not lock (until you get the plate back into the same plane as the other side).

There is no pins it’s a auto lock. (See picture)
If I bump something to hard or lift a lot a weight the auto locks just come right off.
I don’t think I am the only one as I have seen a guy on a video talking about other people having the same thing happen. It’s kinda scary and dangerous.

 

[D2Cat]

Maybe this will help.

 

[Cadman500]

Maybe this will help.

yes that’s a good video. He says try and clean it.
I just thought maybe some one on the forum has heard about this. Sure wish they would just have used a pin.

 

[edritchey]

yes that’s a good video. He says try and clean it.
I just thought maybe some one on the forum has heard about this. Sure wish they would just have used a pin.

I got mine to work really good after fixing the bent parts and adjusting everything correctly but I still installed a couple custom pins just to make sure it's not coming off. The pin diameter is 18mm I don't remember the length when I have it off again I'll measure them I think they were cut to 4.5" once they are installed there is no way for anything to pop off. But it defeats the easy off design these loaders were made for.

 

[Cadman500]

Update on my tractor.
So it turns out Kubota has a recall bulletin on these loaders uncoupling.
Took it in to my dealership and they say Kubota will replace the towers With a new
changed version.
Now the only thing is trying to get the parts. They have had my tractor
Since may/June and can’t get the parts.
They did replace my hood that got damaged from the loader coming off.
I was wondering does anyone know how to see these bulletins?
B2601 with a L435 loader serial number 72691

 

[jkrubi12]

@Cadman500, what year is your loader/tractor? My 2022 loader has a serial number in a distinctly different format, I'm wondering if there has been some sort of change which may eliminate my loader from such problems. Although I've seen other users report the same issue, I've had no such issues with mine.

 

[Cadman500]

@Cadman500, what year is your loader/tractor? My 2022 loader has a serial number in a distinctly different format, I'm wondering if there has been some sort of change which may eliminate my loader from such problems. Although I've seen other users report the same issue, I've had no such issues with mine.

The tracktor ser# is 72691 and the loader # is A8435.
From what I understand is they changed the towers.
I don’t know if it was a change or just bad batch.
Towers Thats the part that is bolted to the bottom of the tractor
then connects to the loader.
The service guy told me it’s a slight change to the welding? On the coupler.
He also said it was a certian set of serial numbers only.

Just wish I could see this bulletin to explain this better.

 

[jkrubi12]

OK, my loader SN is the same format as your loader SN. Keep us updated on how the warranty process shapes up, and post any info on that recall notice if you get a look at it. Good luck!

 

[Cadman500]

Well after waiting 4 months still can’t get the parts from Kubota.
So I took the tractor back from my dealer and put these pins in For now.
So now their is no way it can come off.
McMaster Carr #98497A664 Pin and 98017A220 Washers.

 

[jkrubi12]

Solid fix, great pics. Unfortunate that you are still waiting on a Kubota solution, but your solution is first-class. Thanks for the excellent update!

 

[Elliot Wave]

I just got a loader for my B2601 and had purchased the pins and washers as Cadman500 suggested to be on the safe side.

Thank you for providing the details.

 

[Rizzkid12]

Elliot please let me know if these MacMaster pins fit. According to the MacMaster website, these pins are 3/4 inch which is closer to 19mm. I just tried to put in a 3/4 hitch pin I had lying around from another attachment and it was too large

 

[John D 2]

I just searched Kubota's website under recalls and nothing was listed.

Can someone who has dealership ties find out the serial numbers of the units involved please.

I have not been contacted by Kubota, and I'm not finding anything online.

 

[Elliot Wave]

Elliot please let me know if these MacMaster pins fit. According to the MacMaster website, these pins are 3/4 inch which is closer to 19mm. I just tried to put in a 3/4 hitch pin I had lying around from another attachment and it was too large

The part numbers the original poster provided work. I did use a little crocus cloth to sand it a little but it works.

 

[Elliot Wave]

I just searched Kubota's website under recalls and nothing was listed.

Can someone who has dealership ties find out the serial numbers of the units involved please.

I have not been contacted by Kubota, and I'm not finding anything online.

I only put the pins in my unit which I recently purchased to be on the safe side.

 

[TheOldHokie]

Elliot please let me know if these MacMaster pins fit. According to the MacMaster website, these pins are 3/4 inch which is closer to 19mm. I just tried to put in a 3/4 hitch pin I had lying around from another attachment and it was too large

This is really a manufacturing tolerance question.

19mm = .748 inches.

The McMaster data sheet for that hitch pin lists tolerance as -.003/.001.What do you figure the tolerance is on the holes in the loader?

My guess is its an oversize tolerance so fit of that 3/4" pin is a hit or miss proposition based on individual components. Some tlmes it's a slip fit out of the box and sometimes it isn't. But it's so close it should be easy to tweak.

Now I have some 3/4" 1045 TGP rod here thats toleranced at -.001/.000. If you want to roll your own I will be happy to send you a foot for the cost of postage.

Dan

 

[Rizzkid12]

Thanks Guys. I appreciate the offer Dan. Im going to buy the McMaster pins. My swift tach loader works great . I remove it weekly to mow. I just like the extra safety using pins.

I also assume there are no down sides in using these pins? like creating extra wear on the loader mounting bracket etc? I also see the pin clip is very close to the hydraulic lever and the red locking knurled dial. Does it interfere at all when fully cycling the loader /bucket?