Converting Cat 2 implemnt to Cat 1 (Lower Lift Arm Pins)

[jimpalmer]

I recently acquired a used disk. The previous owner pulled it with a Cat 2 tractor. My tractor has Cat 1 three point hitch. I have looked for new pins with the threads of a Cat 2 and pin of a cat 1 (reducing down), but can't find either bushing or new lower arm pins that will fix my problem. I could use the standard cat 1 pins, but the oversize hole will not be stable or last very long on a disk. Anyone solved this problem?

 

[Bentru]

I have a snowblower intended for cat 2 and I installed cat 1 pins. I think I used a bushing from TSC and cut it to length to make up the difference. Let me look tonight and get back to you. IIRC I used one of these: CountyLine Category 2 to 1 Lift Arm Bushing - For Life Out Here that I cut down. Make sure the cat 1 pins you get have a nice flange and use a large washer under the nut.

 

[Gary Fowler]

I converted my Cat I implements to Cat II and the bolt holes for the Cat II pins I bought is same as Cat I so all I had to do was remove the Cat I and bolt in the Cat II. Yours should be the same.

 

[Wagtail]

Here're some handy specifications:

 

[TBN Support]

:welcome:

I'm going to move this thread over to our attachments section. :tractor:

 

[kco]

These pins came with my snowblower that is Cat 2 and used as Cat 1 for my tractor:



I temporarily used it on my flail mower but wanted to change the width of the lift arms so made these pins using a Cat 1 pin and two Cat 2 to Cat 1 bushings with washers welded to the bushings:



I fixed the bushings in place with a bolt and pin so the lift arms would not shift from side to side.

Here are a couple more photos:



The extra washers on mine are to accommodate my Pat's Easy Hitch.

The pins, washers and bushings were in stock at a local agricultural dealer. He also had Cat 1/Cat 2 combinations pins similar to this:



and my cultivator has pins like this:



Search for "cat 1 cat 2 combination pin" to see suppliers.

 

[stephan]

Grab some bushes or pins

Bare Co - Linkage Conversion Bushes
Bare Co - Top Link Pins
Bare Co - Implement Mounting Pins

If we have have them here in Oz you blokes will have them all over.

 

[Bentru]

Get 1 or 2 of these and cut to length.
Amazon.com: Special Products (Speeco) S2 Cat 1 to 2 Lift Arm1 Hitch Accessories for Tractors, 1/1-Inch: Patio, Lawn & Garden

 

[jimpalmer]

No, The bolt side or threaded end is larger on HD equipment. Kubota is a medium duty tractor and that type pin is acceptable. However, most HD equipment uses the larger bolt pin (1 1/8") bolt. Check out some Cat 2 pins on HD equipment such as JD, Land Pride, etc. You will see the difference in bolt and nut size. I thought I set out the problem in my post. Sorry if I was not clear. The move to increase from Cat 1 to Cat 2 is available in many forms. Dropping down and filling the larger hole with the threaded bolt and cat 1 pin is where I am unable to find what I am looking for.

 

[Bentru]

You can use a bushing that is 7/8 ID and 1-1/8 OD to either make a cat 1 pin fit a cat 2 lower arm, or make a cat 1 threaded part fit a cat 2 implement.

 

[countrybumpkin]

Yes we know what you are asking to do, what they are saying to do is get cat 1 to cat 2 bushings and cut to fit the width of the mounting surface the cat 2 holes are in, then you can use a standard cat 1 bolt on pin. This will bushing the hole from 1-1/8 down to 7/8 to fit the cat 1 pin.

 

[countrybumpkin]

Here is a tisco part number, if you want to try and order or find them local.

 

[jimpalmer]

It is indeed. Thank you, had considered this solution but concern about shortening the bushing had me looking for a better option. I may make a jig and use hacksaw in an attempt to get a straight cut.

 

[jimpalmer]

Here is a tisco part number, if you want to try and order or find them local.

Thank you Countrybumpkin,
Finally someone with the information I am looking for. Called Tisco, they referred me to dealers near me and I can order part. They are wholesale only, must buy from dealer. No dealer in area stocks part, but will order for me. Getting the part number and supplier is all I needed.

 

[Xfaxman]

You may have to bolt them on with the pin facing in, so that your cat 1 lift arms will fit.

 

[countrybumpkin]

Amazon has them of all places too

 

[jimpalmer]

Thanks, called Tisco and found a dealer within 10 miles with the part on the shelf.

 

[JRobyn]

For other folks exploring this thread in the future, even more "radical" adaptations are available. My BushHog 286 came with HUGE pins (on the threaded end), but just Cat 1 for the pin itself. The threaded end is maybe 1-1/8" (Cat 3?). I have no idea where BushHog may have sourced these. Maybe Tisco?



Not a great photo, and it is after I installed the cat 1-cat 2 pin bushings for my quick hitch, but you can get an idea of the thread-end size (on the left). Those are 3/4" bolts on the right.

 

[countrybumpkin]

For other folks exploring this thread in the future, even more "radical" adaptations are available. My BushHog 286 came with HUGE pins (on the threaded end), but just Cat 1 for the pin itself. The threaded end is maybe 1-1/8" (Cat 3?). I have no idea where BushHog may have sourced these. Maybe Tisco? Not a great photo, and it is after I installed the cat 1-cat 2 pin bushings for my quick hitch, but you can get an idea of the thread-end size (on the left). Those are 3/4" bolts on the right.

If it's 1-1/8 thread then it's the same pins listed above.

 

[JOATMON3]

I think tractorpartsinc.com has the pin that will work for the needed application (1 1/8 thread to cat 1 pin). The part number is HII20-0034 I just ordered 2 for about $24 with shipping and I will follow up if they don't work.