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Bolts under crossmember

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Old 06-11-2015, 10:07 AM
  #16  
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Originally Posted by Jeep Driver
I don't post as much as I'd like to.......**** like this is frustrating as hell.


Yes, the threads are worn.

I have the same situation on my AX5 with three bolts. And the identical problem on my tractor with the hitch plate that bolts to the bottom of the trans.


He needs to clean the threads out.....brake cleaner......and chase if he has a thread chaser.

Replace bolt with new bolt.
Coat threads of bolt with Ultra Black or similar.
Install bolt and torque to snug.



The value of 'snug' comes with experience. It's a matter of knowing how tight before too tight.


You guys who are instructing to go immediately to the charted torque value need to knock that **** off!!!!


Life is not lived on a chart or a book or the ****ing internet.


The art of thinking is lost......clearly.



If he oils the bolt and goes straight to 55lbs he's going to have a new problem and then be completely lost.
While I get what you're saying, everyone's version of "snug" will vary. Plus, the OP specifically asked what the value was. A lot of us here have been wrenching a long time, and tend to get a feel for these things, but not everyone is at that level. Many engineers put their knowledge into these values for a reason, and I use my FSM solely for this reason, to find specific values of things.

Replace the bolts, chase the threads, clean it well, torque to spec, and be good in the knowledge it was done correctly. That's the only way to know for a fact it was done properly. If he just "snugs" the bolts, and doesn't do it enough, he's in the same boat, and if he goes too tight, he risks breaking the bolt, either on assembly, or due to vibes and such down the road...and we all know what a can of worms THAT is.

Nothing wrong with wanting to do it the RIGHT way...
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Old 06-11-2015, 10:09 AM
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Originally Posted by ArcticXJ
Those bolts came from the factory with Locktite on them. I just replaced the transmission mount on mine and it was the original transmission mount. When the bolts (finally) came out, they had blue Locktite on them. The bolts obviously weren't lose, and my XJ has 164,000mi. on it. I'd say do what the factory does, Locktite and factory torque specifications. If it works for the factory for over 164,000mi., then I would do same thing. If the bolt works it's way lose again, try different measures.
Well stated sir.
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Old 06-11-2015, 10:11 AM
  #18  
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Originally Posted by Jeep Driver
I don't post as much as I'd like to.......**** like this is frustrating as hell.


Yes, the threads are worn.

I have the same situation on my AX5 with three bolts. And the identical problem on my tractor with the hitch plate that bolts to the bottom of the trans.


He needs to clean the threads out.....brake cleaner......and chase if he has a thread chaser.

Replace bolt with new bolt.
Coat threads of bolt with Ultra Black or similar.
Install bolt and torque to snug.



The value of 'snug' comes with experience. It's a matter of knowing how tight before too tight.


You guys who are instructing to go immediately to the charted torque value need to knock that **** off!!!!


Life is not lived on a chart or a book or the ****ing internet.


The art of thinking is lost......clearly.



If he oils the bolt and goes straight to 55lbs he's going to have a new problem and then be completely lost.

Aren't we testy this morning.


"Snug" ? Ever hear of under torque sweetheart.
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Old 06-11-2015, 08:08 PM
  #19  
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Originally Posted by roninofako
While I get what you're saying, everyone's version of "snug" will vary. Plus, the OP specifically asked what the value was. A lot of us here have been wrenching a long time, and tend to get a feel for these things, but not everyone is at that level. Many engineers put their knowledge into these values for a reason, and I use my FSM solely for this reason, to find specific values of things.

Replace the bolts, chase the threads, clean it well, torque to spec, and be good in the knowledge it was done correctly. That's the only way to know for a fact it was done properly. If he just "snugs" the bolts, and doesn't do it enough, he's in the same boat, and if he goes too tight, he risks breaking the bolt, either on assembly, or due to vibes and such down the road...and we all know what a can of worms THAT is.

Nothing wrong with wanting to do it the RIGHT way...


Every time the kid hit the accelerator that bolt took a tug.

How many tugs does it take to wallow out a threaded aluminum hole?




And what is the value of a POS HF $19.95 clicker? Could be off by 15lbs one way or the other.



So, when the kid that does not even know what he's looking at........
Goes straight to 70lbs with his POS clicker and strips it out, what advise will you give him next?


He'll be off to NAPA to spend $45 on a drill bit, bottom tap, and a new bolt or two.

And when the kid who doesn't even know what he's looking at drills a hole in the bottom of his trans......then what advise? Dollars to doughnuts thats the next post.





BTW, It ain't me that comes here with problems......36 years of turning my own wrench.
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Old 06-11-2015, 08:10 PM
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Originally Posted by CCKen
Aren't we testy this morning.


"Snug" ? Ever hear of under torque sweetheart.


Keep it in your pants, Yankee, I ain't your sweetheart.
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Old 06-12-2015, 09:57 AM
  #21  
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OK, I'll respond within the quoted text...
Originally Posted by Jeep Driver
Every time the kid hit the accelerator that bolt took a tug.

How many tugs does it take to wallow out a threaded aluminum hole?

Not many.



And what is the value of a POS HF $19.95 clicker? Could be off by 15lbs one way or the other.

You'd be surprised, I have several HF clickers, and because of my job, I have access to calibration tools for them. I take mine in regularly, about every 6 months, and have never had them off by more than an in or ft lb or 2. They are surprisingly accurate, and durable.


So, when the kid that does not even know what he's looking at........
Goes straight to 70lbs with his POS clicker and strips it out, what advise will you give him next?

I suppose I'd walk him through the steps to remedy the situation.

He'll be off to NAPA to spend $45 on a drill bit, bottom tap, and a new bolt or two.

Probably a good thing to have in your toolbox anyways, LOL

And when the kid who doesn't even know what he's looking at drills a hole in the bottom of his trans......then what advise?

Again...I would put in my .02 to remedy the situation...

Dollars to doughnuts thats the next post.

That's pretty presumptuous....



BTW, It ain't me that comes here with problems......36 years of turning my own wrench.

Why do you come here then? I been wrenching a long time too, but I definitely don't know it all. This forum has proved useful to me more than once, and I also like to dish out knowledge when I can, to help out the "kid that doesn't know what he's looking at"....

Step back. Take a deep breath. Realize your way isn't the ONLY way. The OP came here with a specific question, and thanks to CCKen, he got that answer. Along with a lot of useless banter from the rest of us. If all is good in the world, the OP learned something, and he can tuck that knowledge away in his mental library, so that one day, just maybe, he can have the same amount of knowledge as you, even...isn't that the point of a forum?
Have a great day, sir.
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