N750A
New member
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?
Top Link Jam Nut
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Bill Guenthner
Platinum Member
I don’t use a wrench on the top link nut. I just hand tighten the turnbuckle against it.
workinonit
Elite Member
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
Super Member
Hand tight plus a "touch" with wrench... Almost everything I have had that was mechanically "hand" tight has come loose...
5030
Epic Contributor
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All the above. My 'Jam nut' on my Kubota's both have a welded on rod to facilitate 'jamming.
nybirdman
Super Member
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
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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
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My top link never comes loose but my side link moves all the time if i dont tighten it , Especially with the brush hog,
5030
Epic Contributor
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Never had the need for one. Only 3PH implement I own is a Land Pride 8 foot shredder.