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Campfire Savant
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Campfire Savant
Joined: Apr 2011
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The gear box has come loose a couple of times through the years. I have to take the stumpjumper off to tighten the nuts. The nuts are the nyloc type, but still get lose over time. My question is, why can’t I weld the nuts to the bottom of the 10” channel iron the gear box is bolted to? I can cut them off if I ever had to. I can tighten the bolts from the top if I weld the nuts. Thank you for your replies.
Last edited by hanco; 08/04/20.
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Joined: Apr 2017
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Campfire Regular
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Campfire Regular
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Does the gearbox tighten down directly to the piece of metal we are looking at?
I know that sounds like a dumb question but I had that same problem with ours back when I was a kid. There was two pieces of metal with about 2 inches of gap between them.
It was a piss poor design that you never could keep it tight. When it cracked all to hell we cut some pipe and welded in there and fixed it.
Carry on
I'm here to increase my social credit score and rub elbows with some of the highest rollers on the internet.
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Joined: Nov 2003
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Campfire Ranger
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Campfire Ranger
Joined: Nov 2003
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Not enough threads/room to double nut it using a slightly longer bolt?
The degree of my privacy is no business of yours.
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Campfire Regular
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Campfire Regular
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Get rid of the nylocs and use some good old fashened lock washers and regular nuts.
He went over yonder way
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Joined: Apr 2007
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Campfire Tracker
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Campfire Tracker
Joined: Apr 2007
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Have you tried putting on new nylon nuts? They only work really well the first time around.
Bear
Life is what happens to you as you are making other plans.
NRA Patron Member
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Campfire Tracker
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Campfire Tracker
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Guess you could do that. You could also weld a couple of “nubs” next to each nut, so the nuts wouldn’t spin, and you could tighten from the top.
If clearance allowed (and it may not), you could also weld the nuts to two separate pieces of 1/8” steel “strap” (that had been drilled)so that each “strap” had the nuts for two of the bolts, and then they wouldn’t spin when tightened from above, and you wouldn’t have to weld to the deck. Would require a slightly longer bolt, though..
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Joined: Sep 2013
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Campfire Member
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Campfire Member
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Red loctite and a big breaker bar to tighten them down
Last edited by sjphillips; 08/04/20.
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Joined: Feb 2010
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Campfire Ranger
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Campfire Ranger
Joined: Feb 2010
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Get rid of the nylocs and use some good old fashened lock washers and regular nuts. This...or weld the nuts. I used to have a bush hog that vibrated something loose pretty regularly. I think the plate the blades attach to got bent and caused the vibration. I have a different bush hog now and have not had that problem.
Last edited by gregintenn; 08/04/20.
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Joined: Nov 2010
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Campfire Ranger
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Campfire Ranger
Joined: Nov 2010
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Red lock tite.
Nut and lock washer
Or new nylock
Dave
�The man who complains about the way the ball bounces is likely to be the one who dropped it.� Lou Holtz
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Joined: Nov 2010
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Campfire Ranger
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Campfire Ranger
Joined: Nov 2010
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Or do what i do sometimes...
Cross thread the [bleep]
Dave
�The man who complains about the way the ball bounces is likely to be the one who dropped it.� Lou Holtz
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Joined: Apr 2011
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Campfire Savant
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Campfire Savant
Joined: Apr 2011
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Does the gearbox tighten down directly to the piece of metal we are looking at?
I know that sounds like a dumb question but I had that same problem with ours back when I was a kid. There was two pieces of metal with about 2 inches of gap between them.
It was a piss poor design that you never could keep it tight. When it cracked all to hell we cut some pipe and welded in there and fixed it.
Carry on Yes. That is bottom of 10” channel iron.
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Joined: Oct 2005
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Campfire Oracle
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Campfire Oracle
Joined: Oct 2005
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It would probably work. But I'd try some aircraft nuts. They're similar to the nylon lock nuts except the steel is crimped at the top of the nut to lock them in place. It takes some torque to affix them. But they don't come loose without some serious stress. https://www.earnestmachine.com/sites/default/files/products/imported/NAM.pdf
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Campfire 'Bwana
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Campfire 'Bwana
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This and new bolts if possible, all grade 8.
Conduct is the best proof of character.
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Campfire Outfitter
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Campfire Outfitter
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All the recommends would probably help, but the real trick is enough torque. Put the biggest frickkin’ impact gun you can find on them, they call for around 450 ft lbs if I remember right. I put new bolts, lock washers, and nylock nuts on mine then bore down on it with a big electric impact gun, that’s what it took to finally get them to stop coming loose.
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Campfire Kahuna
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Campfire Kahuna
Joined: Oct 2011
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Get some regular nuts or steel lock nuts and put some red locktite on it.
Paul
"I'd rather see a sermon than hear a sermon".... D.A.D.
Trump Won!, Sandmann Won!, Rittenhouse Won!, Suck it Liberal Fuuktards.
molɔ̀ːn labé skýla
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Campfire Ranger
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Campfire Ranger
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One was driving me nuts with loosening - I welded the bolts to the pan with threads going up and could observe and tighten nuts from the top.
NRA Member - Life, Benefactor, Patron
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Campfire Tracker
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Campfire Tracker
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Red lock tight is insane. My Milwaukee impact gun has a hard time loosening it up
You've got to hand it to a blind prostitute
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Campfire Regular
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Campfire Regular
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One was driving me nuts with loosening - I welded the bolts to the pan with threads going up and could observe and tighten nuts from the top. THIS.
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Joined: Dec 2013
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Campfire Ranger
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Campfire Ranger
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Weld it. There's very few mechanical questions that that's not the answer too. I've seen stuff you've made, weld it.
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Campfire 'Bwana
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Campfire 'Bwana
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Make sure your PTO shaft is balanced and all u-joints are square, tight and well greased, make sure your blades are [balanced] of equal weight, ny-lock nuts and lock washers are junk, grade 8 fine [machine] thread bolts with flat washers and actual crimped steel lock nuts, red Loctite it all together with short cheater or break over bar, you can heat Loctite with torch if need to remove later.
Trump Won!
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