Farmall Super A, AV, 1939 - 1954
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Thu Aug 11, 2011 8:26 am
Dale on jumping in with both feet and getting it done
Looks very good. Now if there are any other problems that require a helicoil you will have all the confidence that you need to get it done.
Thu Aug 11, 2011 12:12 pm
Rudi, you are absolutely right! I know there are probably some impliment bolts/studs on the various tractors that will need repairs. All I need is MORE MONEY to buy the larger kits....or someone I can borrow them from!! Thanks!
Thu Aug 11, 2011 8:06 pm
Did you use any LocTite on the helicoil?
Thu Aug 11, 2011 9:35 pm
No, should I have? No one mentioned anything about using it, and the HeliCoil video I watched didn't use any. Let me know if there was a reason to use it.
Thu Aug 11, 2011 10:14 pm
I'd get a tube of LocTite green threadlocker and apply it to the helicoil according to the instructions. It will keep the helicoil from turning further into the hole as you install the bolt and keep it from backing out if you remove the bolt in the future. You apply it after assembly. Make sure the threadlocker is well cured before installing the bolt. Just a little added insurance.
Fri Aug 12, 2011 6:44 am
That sounds like a good idea! I will get some. I know what you are talking about, since as I was putting the drawbar back on, I saw one of the stud holes had been repaired with a helicoil by PO, and it apparently was not as long as it could have been. It had been dirven in too far and I assumed it occured during installation, but now realize it probably happened when the stud was installed (or later during use). Not understanding this, and having no extraction tool for the helicoil (nor installation tool for a new one!) I chose to use LocTite Red Threadlocker on the stud. I figured that there was still plenty of helicoil for the stud, it was just recessed about 1/4"
Fri Aug 12, 2011 9:46 am
I somehow thought that I had included the link that showed the Thread Locker .. but looking back I see that it was included in my brain and not on the forum
Anyways, this is what I did : How To Helicoil A Rear Final Implement Mounting Hole
. After having a couple helicoils spin on me, I decided after asking the guys here that using a Thread Locker on a helicoil is an inexpensive but valuable step
Fri Aug 12, 2011 8:27 pm
Rudi, I now remember reading your post, but had forgotten the Threadlocker part, and the video I watched didn't use it and there were absolutely no instructions that came with the HeliCoil Kit!
Now you put the Threadlocker on DURING assembly, but Don says it would be OK to apply it now to the repaired Hydraulic bolt hole. Do you concur?
Also, there is an old HeliCoil that a PO installed in one of the finals, but looks like it spun further in when the stud was installed. The stud came out during disassembly, and I just reinstalled it with Red Loctite Threadlocker. Was there any way to back the HeliCoil back out so it was flush again? Should I do anything about it? I let it cure overnight and just bolted on the drawbar today...it seemed to take the "strain" just fine, so I am not too worried about it.
Fri Aug 12, 2011 8:29 pm
It should be used during assembly (red threadlocker), but since you had already installed the helicoil I suggested you use the green post-assembly threadlocker.
Fri Aug 12, 2011 8:32 pm
Dale, There's no easy way, that I know of, to back out the helicoil. You have to bend up a tab that you can grab with needle nose pliers and and just pull the whole coil out by unwinding and stretching it. If it causes problems, you could remove it and insert a new one.
Fri Aug 12, 2011 8:59 pm
Now I understand...that the GREEN is post assembly...got it! I have the Red for any future jobs. (I had bought it for a stud that was turning)
I'll leave the final helicoil for now...since it tightened up nicely. I'll just keep an eye on it. Thanks!
Sat Aug 13, 2011 7:11 am
Thanks for that bit of information. I didn't realize that there was such a critter. Sure would have worked on the helicoil before
Gonna get me some. I still have a couple that need to be helped before they spin.
I still learn something new every day on the forums.. amazing.
Originally helicoils were designed to go in without a thread locker from what I understand. But since the Thread Locker products are now available, it makes sense to ensure that the hellicoil is well set to prevent spinning.
And as Bob said, there is no way to back out a helicoil safely. I tried. Ended up doing exactly what Don said ... it unwound which is how I got it out.
You will need to make sure that the helicoil in question isn't too deep. If it is, I would take it out and replace the helicoil. Simple job. If the helicoil is ok then use the post assembly thread locker to make sure that it does not thread in farther. A good precaution I think. Same applies to the Touch Control helicoil.
Sat Aug 13, 2011 7:31 am
I think I will do exactly as you suggest, Rudi. It will never be easier than now with the tractor in a nice shop space with clean floors!
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