Why does JD 3 pt Quick Hitch require bushings?

Dreaming Green IN · Feb 25, 2021

I have a John Deere 3 point quick hitch, category 2. The lower link hooks are 1.44" and the top link hook is 1.25". This is larger than the normal Category 2 (1.125" lower, 1" upper) so bushings are needed.

Why did Deere make these quick hitches this way, requiring bushings?

larryanderson · Feb 26, 2021

They are CATIII . The larger cast factory couplers II/III do not require bushings.

Dan in Ohio · Feb 26, 2021

A couple years ago I purchased a John Deere quick hitch (which I knew nothing about) for my Dad to use on his 2510. The farm
auction had both a 2510 and 2520 tractor so I assumed the hitch would work just fine. Now keep in mind my Dad was in his early
eighties and we did not EVER have a quick hitch on our farm back in the day. Next time I saw my Dad he said to take the hitch back
as it did not work on his attachments. I did not realize why until I bought a 3PT rotary hoe from the sixties that had the
bushings still attached that was needed but it was too late for my Dad.

Dreaming Green IN · Feb 26, 2021

Thanks for the reply. This unit is made of steel, not cast iron. It is a John Deere brand. I understand that the pin sizes are Cat 3, but the spacing is Cat 2 (34 x 15).

I bought a JD rear cutter MX8 that has lower pins 1-7/16, also.

So my question is still: why does Deere use those Cat 3 pin/bushing sizes in Cat 2 equipment?

wore out · Feb 26, 2021

(quoted from post at 09:54:22 02/26/21) Thanks for the reply. This unit is made of steel, not cast iron. It is a John Deere brand. I understand that the pin sizes are Cat 3, but the spacing is Cat 2 (34 x 15).

I bought a JD rear cutter MX8 that has lower pins 1-7/16, also.

So my question is still: why does Deere use those Cat 3 pin/bushing sizes in Cat 2 equipment?

I would say the bushings that get installed on the implement "pins" are used to make them bigger (obviously) so the latch mechanism can be made more robust and tough than it would be if sized down to grab the smaller pins.

Scott 730 · Feb 26, 2021

(quoted from post at 12:54:22 02/26/21)
So my question is still: why does Deere use those Cat 3 pin/bushing sizes in Cat 2 equipment?

It's not a John Deere thing. Any brand of cat 2 quick hitch I have ever seen takes cat 3 bushings.
Don't overthink it.

tractorguy2 · Feb 26, 2021

Back in the 80's around here if you bought a different tractor or new tractor the quick hitch was the first thing to be removed and sold on a consignment sale. A
quick hitch was nothing but a time waster and a pain. Too many implements would match up. I had a brand new six row cultivator I bought in 1981. I would rent out.
Everytime someone tried to hitch to the cultivator their QH had to be removed. I farmed till 2006. Never owned a tractor with a quick hitch.

Dreaming Green IN · Feb 26, 2021

It's not a John Deere thing. Any brand of cat 2 quick hitch I have ever seen takes cat 3 bushings.
Don't overthink it.[/quote]

I also own a Buhler brand quick hitch. It is made for standard Cat 2 pins (1-1/8 lower, 1 upper). Bushings would not fit in those hooks.

SVcummins · Feb 26, 2021

Then throw it away and buy a buhler

SVcummins · Feb 26, 2021

Unless you have all one category of implements that are all made the same a quick hitch is a waste

Dreaming Green IN · Feb 27, 2021

(quoted from post at 14:28:59 02/26/21)

It's not a John Deere thing. Any brand of cat 2 quick hitch I have ever seen takes cat 3 bushings.
Don't overthink it.

Thanks, Scott. I did not know that other brands use bushings because my Buhler doesn't. That is helpful to know.

The Deere quick hitch has advantages over the Buhler: less side play, longer top hook, and more tapered lower hooks making it easier to insert into pin frames. All my equipment is Category 2, so a quick hitch will fit them all, with the convenience of connecting from the driver seat.

Fitting my equipment with bushings is not an obstacle, but my question is still unanswered: [b:6714dd5439]why do manufacturers size their quick hitches to use bushings?[/b:6714dd5439]

Why does JD 3 pt Quick Hitch require bushings?

Dreaming Green IN

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larryanderson

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Dan in Ohio

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wore out

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SVcummins

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