So I tried using a torque wrench for the first time last night. The manual said 33 ft lb and that's what I set it to, but then this happened. It was one of those ratchet style torque wrenches. I don't know if I did something wrong or if the bolt had already been abused. Anyhow, it was too late to get a new one and besides, I was unable to locate a part number for it. I found an eye bolt in the toolbox that was long enough and happened to match the threads. How long do you suppose this will hold up?
Also: does anyone know where I might find a replacement bolt?
(http://i.imgur.com/ifFeQrr.jpg)
(http://i.imgur.com/nXsoKzb.jpg)
You may have to go to a real nut and bolt store to find one the right length and grade. Grade is important.. My manual also says 33#. I am guessing the bolt was stressed too much in the past.
Thanks for the tip about grade. It seems it's a grade 5 (three radial lines). Using my ruler, it appears to be a 9/16"-18 Thread, 4-1/2" Length cap screw.
If I can't find one at the local shop, I may try these: http://www.mcmaster.com/#91247a414/=oob9wu (http://www.mcmaster.com/#91247a414/=oob9wu)
Yup, that would be a grade 5 bolt. I thought that might be the case. Do you mean the head is 9/16"? You also need to know the diameter of the actual bolt.
The head is 9/16. The diameter is 3/8. I assumed the head size dictated the bolt diameter.
I was just at our ACE hardware store and they have the bolt you need. It was a $1.49. I figured it was a 3/8" bolt.
That's great news!
I realized I previously linked to the wrong bolt however. That was a 9/16" shaft diameter rather than 9/16" head size. Beginner's mistake. I hope ACE has this one: http://www.mcmaster.com/#91247a642/=oocmz4 (http://www.mcmaster.com/#91247a642/=oocmz4)
Common mistake. Don't worry about it. That is why we have this forum. To assist our brother and sister AMC owners keep our Kenosha Klassics on the road.
I test bolt diameters with an open end wrench set. Tightest fit is the size!