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  1. #1
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    Default Converting Cat 2 attachments to Cat 1

    What needs to be altered on Cat 2 attachments to use them on a Cat 1 tractor? I know the lower arm pins have to be changed to fit and maybe the spread may need narrowing on some tools. But how do you reduce the hole size for the top link; what is the easy way and what is the best way?

  2. #2
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    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by Arkaybee
    What needs to be altered on Cat 2 attachments to use them on a Cat 1 tractor? I know the lower arm pins have to be changed to fit and maybe the spread may need narrowing on some tools. But how do you reduce the hole size for the top link; what is the easy way and what is the best way?
    Top link? easy, I do it all the time with a sleeve that fits in the CAT 2 toplink hole and reduces it to CAT 1.
    Bob

  3. #3
    Elite Member schmism's Avatar
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    New holland TC(33)

    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by Arkaybee
    What needs to be altered on Cat 2 attachments to use them on a Cat 1 tractor? I know the lower arm pins have to be changed to fit and maybe the spread may need narrowing on some tools. But how do you reduce the hole size for the top link; what is the easy way and what is the best way?
    a lot of cat 2 impiments wont have pins but instead brackets to capture the end of the link with holes for double shear pins. (stronger this way)

    like already noted, bush the holes down
    Steve - TC33D 4x4 FEL, dual rear remotes with toys

  4. #4
    Silver Member
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    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by Doc_Bob
    Top link? easy, I do it all the time with a sleeve that fits in the CAT 2 toplink hole and reduces it to CAT 1.
    Bob
    Is this sleeve a tight friction fit or do you have to weld it in? If it goes all the way through from one side to to the other how does the cat 1 end on the top link get fitted in there? It would be too large to go through the cat 1 end on the top link wouldn't it?

  5. #5
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    Kioti DK55C

    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by Arkaybee
    Is this sleeve a tight friction fit or do you have to weld it in? If it goes all the way through from one side to to the other how does the cat 1 end on the top link get fitted in there? It would be too large to go through the cat 1 end on the top link wouldn't it?
    This is something I have been curious about. I have Cat II on my tractor and several older implements in the shed with Cat I pins. Is it just a matter of putting a sleave in the balls on the lower arms and top link?

    I'm also concerned about the strength.

    Thanks

  6. #6
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    Mahindra 6000 MWFD, 2 1950's Farmalls, 1974 Farmall 140, 1967 Mf 135Delux

    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by Arkaybee
    What needs to be altered on Cat 2 attachments to use them on a Cat 1 tractor? I know the lower arm pins have to be changed to fit and maybe the spread may need narrowing on some tools. But how do you reduce the hole size for the top link; what is the easy way and what is the best way?
    Better check the width of the pins on the Cat 2 implements. Sometimes you will find that they are 32" apart rather than the nominal 26" for Cat 1. bobg in va

  7. #7
    Silver Member
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    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by Doc_Bob
    Top link? easy, I do it all the time with a sleeve that fits in the CAT 2 toplink hole and reduces it to CAT 1.
    Bob
    Doc_Bob Please tell me more about how to use this sleeve as you use it to enable the use of Cat 2 implements on a Cat 1 tractor.

    Arkaybee

  8. #8
    Super Member 3RRL's Avatar
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    55HP 4WD KAMA 554 and 4 x 4 Jinma 284

    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by Arkaybee
    What needs to be altered on Cat 2 attachments to use them on a Cat 1 tractor? I know the lower arm pins have to be changed to fit and maybe the spread may need narrowing on some tools. But how do you reduce the hole size for the top link; what is the easy way and what is the best way?
    You're talking about Cat II attachments, right?
    Usually, they have larger lower lift pins and are spread wider apart than Cat I. You can buy Cat I lift pins and bolt them on the attachment so they are facing inwards, instead of outwards. Then adjust the drag links out to meet them. You can get lift pins that have a Cat II threaded shaft and step down to Cat I pin size. That way they'll fit the bolt holes on the implement real good.

    As far as the top link, that's usually part of the tractor, no? So if you have a Cat I tractor, all you have to do is use the pin that fits your Cat I top link and put that through the hole(s) in your implement. You can use bushings there if you want to snug up the fit.
    Rob-
    ...The Older I get...the Better I Used to be...
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  9. #9
    Gold Member
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    SE Pa (Chester County)
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    John Deere 4300, John Deere 3010 w/48 loader

    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by Arkaybee
    What needs to be altered on Cat 2 attachments to use them on a Cat 1 tractor? I know the lower arm pins have to be changed to fit and maybe the spread may need narrowing on some tools. But how do you reduce the hole size for the top link; what is the easy way and what is the best way?

    Maybe these links will help.

    Speeco

    http://www.speeco.com/asp/display.as...ft+arm+Pins%29

    Most Tractor Supply stores stock a good assortment of the draw pins, bushings, etc. I'm sure that they'll be glad to special order something that isn't in stock.

    As far as the top link goes, you might be able to use a Cat II top link and use a bushing to adapt it the the Cat I mount on the tractor, although I'm sure that two bushings and the proper length top link pin could be made to work.
    Jim Fisher

  10. #10
    Super Member greg_g's Avatar
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    Western Kentucky
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    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: Converting Cat 2 attachments to Cat 1

    Quote Originally Posted by 3RRL
    You can buy Cat I lift pins
    But you need to pay attention when buying, there are two types of Cat 1 lift pins: there's the kind that's Cat 1 on both ends. You don't want them. You want the ones that are Cat 1 on the pin end and Cat 2 on the threaded end

    Same goes for lifting Cat 1 implements with a Cat 2 TPH. There are Cat 2 pins that are Cat 2 on both ends. You don't want them. You want the ones that are Cat 2 on the pin end and Cat 1 on the threaded end.

    Hope that wasn't too confusing.

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

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