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Cat D2 5U Drawbar - Swing Bar Mounting Studs

Cat D2 5U Drawbar - Swing Bar Mounting Studs

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ric44
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Can anyone give me a crossover for the Cat part # 4B4601 mounting studs and 1B4206 nuts for the swing bar ? Cat no longer lists them . I'd just as soon use bolts but didn't have anything on hand that was large enough .

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Fri, Oct 17, 2025 3:08 PM
brian18a
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stud 5/8 x 2-7/8 inch fine thread, nut 5/8 fine thread

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Fri, Oct 17, 2025 7:27 PM
ric44
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Thanks Brian but I probably didn’t make myself clear enough . The studs will be screwed into a D2N winch . Will the studs still need to be the same size ?

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Fri, Oct 17, 2025 7:35 PM
neil
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Hyster D2N installation says to install the drawbar swing quadrant to the undersize of the winch using "hardened" 5/8-UNF x 2 1/4 with lockwashers. I would guess that "hardened" means Grade 8. So you don't need to pull the studs from the drawbar brackets to reuse in the winch (but you probably could if you wanted to). What's your tractor's serial number?

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Fri, Oct 17, 2025 10:36 PM
ric44
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Reply to neil:

Hyster D2N installation says to install the drawbar swing quadrant to the undersize of the winch using "hardened" 5/8-UNF x 2 1/4 with lockwashers. I would guess that "hardened" means Grade 8. So you don't need to pull the studs from the drawbar brackets to reuse in the winch (but you probably could if you wanted to). What's your tractor's serial number?

5U 14629 is serial # . Well maybe that size grade 8 bolt won’t be too hard to come by . Thanks for the info Neal .

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Sat, Oct 18, 2025 12:25 AM
trainzkid88
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5/8 x 2 1/4 unf very common size. in grade 8 piece of piss to get any decent bolt shop or industrial supplies joint will have them.

almost every bolt on these old girls is unc or unf. being yank designed they used SAE standards.

"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"

instead of perfection some times we just have to accept practicality

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Sun, Oct 19, 2025 3:19 AM
ric44
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Got the bolts ordered , 4 for 20 bucks off Ebay . While I was cleaning the mounting bolt holes out on the winch I went ahead and installed the new steering clutch drain plugs and dropped the drawbar out from under it . It's got a nice little bow to it that I got to iron out before I can get it and the swing bolted back up .

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Sun, Oct 19, 2025 3:28 PM
trainzkid88
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that needs heat to straighten it. i would get the whole drawbar warm before heating the bent area more strongly and pressing straight heat relaxes the steel preventing stress damage. bury it in dry sand after wards and let cool slowly.

the easiest way to heat the whole thing is build a fire let it go to coals and bury it in the coals when its all warmed up the pull it out and work it using a rosebud torch tip to keep it heated. you would use a lot of gas trying to heat that sufficiently with a torch.

a big charcoal bbq or smoker would also work.

"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"

instead of perfection some times we just have to accept practicality

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Mon, Oct 20, 2025 5:35 AM
juiceman
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The holes in your drawbar look almost perfect. Not egg shaped, wallowed out.

I did some similar work here; the pin holding the tractor mount was a bugger to remove. I heated several times, generous lube/wax etc. and barely got it out using my little 30 ton press. I have lobbed off worn sections before and grafted new metal rather than fight trying to straighten one. A lot less struggling.

Have fun with the repair. You will be happy having a functional hitch. JM

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Mon, Oct 20, 2025 2:47 PM
neil
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I had zero luck pulling that pin from mine. I think it's in there for good. The drawbar swings so I'm good

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Mon, Oct 20, 2025 6:44 PM
ric44
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Reply to juiceman:

The holes in your drawbar look almost perfect. Not egg shaped, wallowed out.

I did some similar work here; the pin holding the tractor mount was a bugger to remove. I heated several times, generous lube/wax etc. and barely got it out using my little 30 ton press. I have lobbed off worn sections before and grafted new metal rather than fight trying to straighten one. A lot less struggling.

Have fun with the repair. You will be happy having a functional hitch. JM

Juice I was thinking the same thing . Just lop off the bent section and sacrifice a cheaper tractor drawbar and weld a repair section in . I don't have a working torch ( gas cost too much ) but do have welders and can easily buzz it together . The tractor has 4100 hrs on the meter but I don't think the drawbar has been used much . I actually think the D2N winch may have had something to do with bending the drawbar in the first place . It's unreal how stout these old winches are . I watched the previous owner pull down and uproot a good 12in hardwood tree just by tying a choker head high around it and letting her rip . Pretty impressive .

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Mon, Oct 20, 2025 7:28 PM
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