Why the length of the top link pin is different?

   / Why the length of the top link pin is different? #1  

rogerius

Silver Member
Joined
Apr 10, 2010
Messages
238
Location
ON, Canada
Tractor
Kubota L3940HST
I just purchased a 6ft box blade "County Line" from TSC and I find out that I need a 4" long pin for the top link. Already I've got a 6ft Walco rotary cutter for which I need a 3" long pin so I'm confused because I tought the 3pth is standard for all implements; not only for size of the pin of the pins but also for the pin length. I attached some pictures for reference.
 
   / Why the length of the top link pin is different? #2  
double post
 
   / Why the length of the top link pin is different? #3  
I'm confused because I tought the 3pth is standard for all implements; .

It is standard for each of the classes of 3pt. your likely looking at the difference between class 2 and class 3 hitch setup.

class 0 -garden tractor, class 1 subcompact, class 2 normal for most CUT and small AG, class3 med AG and up
 
   / Why the length of the top link pin is different? #4  
schmism said:
It is standard for each of the classes of 3pt. your likely looking at the difference between class 2 and class 3 hitch setup.

(class 0 -garden tractor, class 1 subcompact, class 2 (normal for most CUT and small AG, class3 med AG and up)

No, this is not true. Within each class of implements, i.e. class 1 or 2, there is variation for top link pin length. I know this because I have several cat 1 implements and a shorter pin will not work for all of them, despite being the correct width or thickness (girth, if you will!) The best thing to do is just get a pin long enough to work for all implements and use that one- too long is fine, too short isn't. I'll refrain from making a joke on that one.
 
   / Why the length of the top link pin is different?
  • Thread Starter
#5  
It is standard for each of the classes of 3pt. your likely looking at the difference between class 2 and class 3 hitch setup.

class 0 -garden tractor, class 1 subcompact, class 2 normal for most CUT and small AG, class3 med AG and up

Both implements which I've got are for category 1 hitch as I can installed on my L3940. The question is why the lenght for the top pin is different?
 
   / Why the length of the top link pin is different? #6  
I found the same thing as remington270 with my attachments, however the whole thing looks a little twisted. Any chance the two arms that go to the rear of the implement fit better on the outside of the two vertical arms? Your shorter pin migh be close to fitting then.
 
   / Why the length of the top link pin is different?
  • Thread Starter
#7  
I found the same thing as remington270 with my attachments, however the whole thing looks a little twisted. Any chance the two arms that go to the rear of the implement fit better on the outside of the two vertical arms? Your shorter pin migh be close to fitting then.

I already tried that, doesn't work; the bends from the rear arms will interfere with the bends from vertical arms.
 
   / Why the length of the top link pin is different? #8  
If you purchased those implements new they should have come with the correct pins for that implement. Every attachment that I have bought new I made sure correct pins came with it whether it was a bush-hog,PHD or whatever. Now if you bought used thats a different storie.
I also on top center link depending on implement have used big thick bolts/washers in a bind. :2cents:

Boone
 
   / Why the length of the top link pin is different? #9  
Diameter is standard, length of pin can vary with different manufacturers.
 
   / Why the length of the top link pin is different? #10  
   / Why the length of the top link pin is different? #11  
If you purchased those implements new they should have come with the correct pins for that implement. Every attachment that I have bought new I made sure correct pins came with it whether it was a bush-hog,PHD or whatever. Now if you bought used thats a different storie.
I also on top center link depending on implement have used big thick bolts/washers in a bind. :2cents:

Boone

You must live a charmed life. My bush hog, woods box blade, or KK rototiller, KK rear blade never came with top pins. Either a pin thief was in the area, it was a cost cutting measure, or the dealer put them in the parts bin. I never expected them to come with attachment pins.
 
   / Why the length of the top link pin is different? #12  
You must live a charmed life. My bush hog, woods box blade, or KK rototiller, KK rear blade never came with top pins. Either a pin thief was in the area, it was a cost cutting measure, or the dealer put them in the parts bin. I never expected them to come with attachment pins.

All of my Landpride attachments came with pins except rear scraper.
 
   / Why the length of the top link pin is different? #13  
You must live a charmed life. My bush hog, woods box blade, or KK rototiller, KK rear blade never came with top pins. Either a pin thief was in the area, it was a cost cutting measure, or the dealer put them in the parts bin. I never expected them to come with attachment pins.

Buhler supplies top pins / links with their equipment?
 
   / Why the length of the top link pin is different? #14  
I have several cat1 and cat2 implements. I don't think any of them have the same toplink width. Like mentioned above, every manufacturer is different. My IH implements have a very wide toplink attachment point. They will fit a cat3 toplink. I also have never had toplink pins as OE equipment. I do have a top pin for every attachment. Just makes it easier.
 
   / Why the length of the top link pin is different? #15  
You must live a charmed life. My bush hog, woods box blade, or KK rototiller, KK rear blade never came with top pins. Either a pin thief was in the area, it was a cost cutting measure, or the dealer put them in the parts bin. I never expected them to come with attachment pins.

Sorry too hear that.

Boone
 
   / Why the length of the top link pin is different? #16  
My Woods box blade came with a pin, middle buster, and bush hog (both from TSC) did not. Toplink width is different on all three.
 
   / Why the length of the top link pin is different? #17  
Instead of one pin that stays with the top link, have a right-sized pin that stays with each implement.

Bruce
 
   / Why the length of the top link pin is different? #18  
Just get a long pin and use it for everything. You're only ever going to have one implement on the tractor at a time. What do you need more than one pin per tractor for? (Except as a backup, in case you lose one, of course.)

My tractor came with a short top link pin. First implement I bought, it was too short to use. I bought a long one and have never looked back.
 
   / Why the length of the top link pin is different? #19  
I bought one of each cat. 1 pin size that TSC carries. I'm covered. :thumbsup:
 
   / Why the length of the top link pin is different? #20  
It looks like that implement is designed with a Quick-Hitch in mind. Either use the longer pin, or get a QH at forget about keeping different length pins altogether.
 
 

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