Stuck lock nut on 3pt hitch

   / Stuck lock nut on 3pt hitch #1  

GravelRoads

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The lock nut on my adjustable side link won't turn. I've applied penetrating oil but still no luck when hitting the wrench with a hammer or using a longer lever arm. Any ideas?
 
   / Stuck lock nut on 3pt hitch #2  
Is it a left hand thread? Try turning it in the opposite direction of which you have been trying to turn it.
 
   / Stuck lock nut on 3pt hitch
  • Thread Starter
#3  
Is it a left hand thread? Try turning it in the opposite direction of which you have been trying to turn it.

I did try the other direction although not with much gusto. I thought the Kubota's were a standard thread (eg. turn left to loosen).
 
   / Stuck lock nut on 3pt hitch #4  
Time to invest in a Torque Multiplier wrench.

Amazing tool. Used when working on heavy equipment when no compressed air tools available. Also used to remove and tighten truck lugs nuts.

Far more powerful than a long pipe!!!

Many different styles and prices.

I would suggest a middle of the road unit like this one from Amazon.

Amazon.com: XtremepowerUS Torque Multiplier Labor Saving Lug Nut Wrench W/ 8 Cr-v Socket: Automotive

Watch some youtube videos and you will be convinced.

SEMI TRUCK BUS MOTORHOME RV LUG WRENCH TORQUE MULTIPLIER NO IMPACT OR COMPRESSOR NEEDED - YouTube

Dave M7040
 
   / Stuck lock nut on 3pt hitch #5  
The 2 side links I have the lock nuts are LH threads, might want to give it a go again.
 
   / Stuck lock nut on 3pt hitch #6  
If you put your tractor model in your profile or the thread it might help.
 
   / Stuck lock nut on 3pt hitch #9  
Those are really cool but I need a crescent wrench for this nut.

Yeah, Dave, he can't get a socket (with or without a torque multiplier) onto a rod like that. Dear Gravel: If you just can't get it loose, take the whole side link off the tractor and put it in a big vise where you can put more serious leverage on the nut. Should be able to see threads as to whether it is reverse threads or not. Quite often those side links don't give you a solid resistance to turning, they 'give' somewhat, and that defeats attempts to tap the wrench with a hammer, etc. That's part of why I'd put it in a vise. All else fails, heat it some.
 
   / Stuck lock nut on 3pt hitch #11  
I'd look at the thread to confirm which way the nut should be turned to loosen. I can't tell you how many times I took it for granted and was wrong, so when I doubt I look at the threads first.
 
   / Stuck lock nut on 3pt hitch
  • Thread Starter
#12  
w/o seeing a picture of what you are facing, would one of these work? (nut splitter)

4jbQha3.jpg
 

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   / Stuck lock nut on 3pt hitch #13  
Looks like reverse thread so you'll need to turn it clockwise to loosen the nut, running it up the rod.
 
   / Stuck lock nut on 3pt hitch #14  
Great Picture GravelRoads!! This shows the left hand thread and need to back the nut up the thread by turning to the left. It may be jammed tight, and require a bigger backup and cheater pipe. It always helps to look close at the threads to get which way to run the nut.... I once had a Toyota dealer try to jam the nut on an alignment linkage even tighter and had the torch out trying to heat it up as well. The "bite" marks left on the steering linkage clearly showed they were trying to turn it the wrong way. I havent been back to that dealer!
 
   / Stuck lock nut on 3pt hitch
  • Thread Starter
#15  
Thanks for your help. I should have put my glasses on to inspect the threads, DOH!
 
   / Stuck lock nut on 3pt hitch #16  
Right. They do look like left-handed threads. Maybe you just tried turning it the wrong way (and by applying hammer and wrench tightened it very tight.) With those welded handles on the body I think you SHOULD be able to put some immovable lever in there (like a crowbar) and apply "opposite force" with a good large open end or crescent wrench and loosen that sucker. Or, like I said earlier, pull it off the tractor and put it in a big vise.
 
   / Stuck lock nut on 3pt hitch #17  
Third arm is I am correct, it is made to turn the barrel with it connected to an implement. Might find hooking up to one helps you break the nut loose. One end is left and the other right hand thread for all it is a big heavy turnbuckle. You can get yourself in trouble doing much turning of one end only as you need both male ends screwed in the same amount so you have full adjustment of the third arm. There is most likely a mark in the threads to let you know when you have unscrewed it as much as safe.
 

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