So i was adjusting the valves on my 2006 crf250x (worst purchase i've made in the history of my life), i was tightening the cam restraints back the their 12 LB/FT torque when i hear a loud crack and my wrench slips off the bolt. I pulled the bolt in half (thank god the threads in side the engine didn't get ripped out). So now i have to pull the old bolt out but where it broke is down in the hole so i don't know what to do.
Anyone have any advice or links to new "cam restraint bolts" i don't know what else to call them. They are two brackets that go over the cam shaft and hold it in place. Any advice would be amazing.
Faulty torque wrench what a nightmare...
Started by
Crimson Cap
, May 30 2012 11:49 PM
34 replies to this topic
Posted 31 May 2012 - 12:45 AM
http://www.thumperta...-torque-wrench/ any chance it was a kincrome wrench? I know how you feel, its a horrible feeling. Specially when you set the wrench to a specific torque.
Anyway the damage has been done, now you have to fix it. Go to your hardware store and get an "easy-out" dont cheap out on them, cheap ones are prone to snapping and you wont be getting it out if it snaps. Simply drill a small hole in the screw/bolt and insert the easy out and it should come out with ease.
If you want to go out on the cheap, try ingrave a X on the bolt so you can use a phillips head screw driver to get it out. Or if your good with a welder, weld a couple of washers and a nut to the brocken bolt and back it out.
Anyway the damage has been done, now you have to fix it. Go to your hardware store and get an "easy-out" dont cheap out on them, cheap ones are prone to snapping and you wont be getting it out if it snaps. Simply drill a small hole in the screw/bolt and insert the easy out and it should come out with ease.
If you want to go out on the cheap, try ingrave a X on the bolt so you can use a phillips head screw driver to get it out. Or if your good with a welder, weld a couple of washers and a nut to the brocken bolt and back it out.
Posted 31 May 2012 - 09:40 AM
Ok, i'll try to find one. I live in rural alaska, and we only have one auto parts store but i'll see what i can find. Will this easy out require a specific drill bit size to work?
Posted 31 May 2012 - 09:45 AM
They come as a kit (drill bit and extractor) and are pretty common. Work great as long as you don't snap em' off, then your poo pooed !!
Posted 31 May 2012 - 09:46 AM
It's funny this came up now...I was just thinking where (or IF) a guy could take a torque wrench to have it calibrated, or at least check it's accuracy.
Airports? VoTechs? Snap-on? NAPA? Anybody know?
Airports? VoTechs? Snap-on? NAPA? Anybody know?
Posted 31 May 2012 - 09:53 AM
motoxvet, on 31 May 2012 - 09:46 AM, said:
It's funny this came up now...I was just thinking where (or IF) a guy could take a torque wrench to have it calibrated, or at least check it's accuracy.
Airports? VoTechs? Snap-on? NAPA? Anybody know?
Airports? VoTechs? Snap-on? NAPA? Anybody know?
http://gl1800riders....bration-testing
Posted 31 May 2012 - 09:57 AM
All my torque wrenches are snap on and I send them in every year or two to get them recalibrated
Posted 31 May 2012 - 10:06 AM
Fill the hole with oil. Get a reverse drill bit that fits into the hole and won't touch the edges. Drill in reverse until the screw backs right out on the end of the drill bit. Usually happens very quickly without much hassle. Getting reverse drill bits where you live may not be easy.
Posted 31 May 2012 - 10:52 AM
12lb/144in lbs for 8mm camp cap bolts????? That is a CRAP load of torque.. Most 8mm bolts are 84inchlb or 7ftlbs Your torque wrench might be right and you just over torqued them.. Then again I do not know what the manual calls for on this bike but 12lb seems WAY to high.. Kawi in 04-05 manual called for 108 inch lbs and it was causing major issues..
Posted 31 May 2012 - 11:07 AM
rough man! that exact same thing happened to me on the camshaft caps on a mazda 626, I head to drill it out horribly slowly, which is what you'll be at if the easy out doesn't work.
Get a punch and make a mark dead center in the snapped bolt, then drill it out, starting with small, to large drill bits, you can usually, if careful, drill it out easy enough to keep the threads in good shape in the head.
I use a higher end torque wrench for my small and large torques now, not the chinese bargain auto parts tool that I used before.
Good luck! maybe once shes all fixed up you'll get some trouble free running and learn to love your honda again!
Get a punch and make a mark dead center in the snapped bolt, then drill it out, starting with small, to large drill bits, you can usually, if careful, drill it out easy enough to keep the threads in good shape in the head.
I use a higher end torque wrench for my small and large torques now, not the chinese bargain auto parts tool that I used before.
Good luck! maybe once shes all fixed up you'll get some trouble free running and learn to love your honda again!
Posted 31 May 2012 - 11:15 AM
i assume you were using a 1/4 wrench, anything larger, and you would have a hard time "feeling" the wrench at that low on the scale.
Posted 31 May 2012 - 11:16 AM
Happened to me on my front axle clamp bolts. Torquing down and then ping. Broken bolt. Found out the other one had the same problem. It looked like they had been stretched. Once you got past where the threads engaged in the fork lug the threads got further apart amd the shaft got thinner.
Posted 31 May 2012 - 03:21 PM
HappyG, on 31 May 2012 - 11:15 AM, said:
i assume you were using a 1/4 wrench, anything larger, and you would have a hard time "feeling" the wrench at that low on the scale.
Posted 31 May 2012 - 03:31 PM
I use three different torque wrenches 1/4 inch lbs. 3/8 ft lbs.and 1/2 drive ft lbs. always buy a torque wrench that you can use around the middle of the scale,never use a torque wrench at the lowest or highest settings.And try not to use it for backing out bolts.
Posted 31 May 2012 - 03:38 PM
Crimson Cap, on 31 May 2012 - 09:40 AM, said:
Ok, i'll try to find one. I live in rural alaska, and we only have one auto parts store but i'll see what i can find. Will this easy out require a specific drill bit size to work?
Posted 31 May 2012 - 11:15 PM
Ud_Luz, on 31 May 2012 - 03:38 PM, said:
Might I suggest you find somebody experienced on extracting bolts? You can really make things worse if you're not careful.
Edited by Crimson Cap, 31 May 2012 - 11:15 PM.
Posted 01 June 2012 - 05:05 AM
So where are you guys getting torque wrenches recalibrated? Every time I have looked into recalibration, the price has been more than what the wrench cost in the first place (I don't remember exactly, but it seems like every estimate has been $100+).
