Top Link Jam Nut

[N750A]

I've got a new Kubota MX5400. The top link on the 3-point hitch has a jam nut to keep it from losing adjustment. Does the jam nut just need to be hand-tight, or should more torque be used such as tightening with a wrench?

 

[Bill Guenthner]

I don’t use a wrench on the top link nut. I just hand tighten the turnbuckle against it.

 

[workinonit]

I don't use a manual toplink anymore but when I did I did the same as Bill. Sometimes they will tighten themselves enough you have to use a wrench to loosen them.

 

[WranglerX]

Hand tight plus a "touch" with wrench... Almost everything I have had that was mechanically "hand" tight has come loose...

 

[5030]

All the above. My 'Jam nut' on my Kubota's both have a welded on rod to facilitate 'jamming.

 

[nybirdman]

Depends what's on the three point;tiller is a lot of vibration,rear blade the same,box blade not so much.I usually tighten with a wrench.

 

[Lineman North Florida]

I have one tractor with that type of third link and if I don't snug it with a wrench it will loosen up when I am bush hogging.

 

[3gunr]

My top link never comes loose but my side link moves all the time if i dont tighten it , Especially with the brush hog,

 

[oosik]

I would snug up the jam nut with a wrench. I have a hydraulic top link now. SOOOOO.. much better.

 

[5030]

I would snug up the jam nut with a wrench. I have a hydraulic top link now. SOOOOO.. much better.

Never had the need for one. Only 3PH implement I own is a Land Pride 8 foot shredder.

 

[dodge man]

On my JD the top link has little levers sticking out to turn it. I often get the jamb nut where I want it and then use the levers on the top link to tighten it up to the jamb nut. It seems to hold.

 

[Gordon Gould]

I give a small tug with a wrench on the jam nut. My problem is when removing the implement I sometimes forget to loosen the jam nut BEFORE I pull the pin at the implement connection. If I do that I have problem loosening the jam nut when I mount the next implement. Just a maddening pain.

gg

 

[gstrom99]

My Deere 855 came with 3" studs welded to each side of the nut. No tools needed.

 

[Little Red Tractor]

I always snug it up with a wrench...it's a pain in the neck; but it stays where I put it.

 

[RalphVa]

My experience is it needs to be wrench tightened.

 

[Buxus]

I have a Kubota M7060. I tighten it with a wrench and it will still loosen after several hours with the 10 foot flail. Drives me crazy.

I wonder if two nuts would be a cheap better system. Like the way two nuts on a steel fishing rod reel seat rarely loosen. Only one nut on a steel reel seat is useless.