I know most run disc brakes but can someone tell me what the torqe is for the 4 bolts on the backing plate is?
thanks, Ed
thanks, Ed
CK5
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14 blt rear question
- Thread starter pomai
- Start date
desertrat67
Hawk Driver
Goont-n-tight. German torque method.
But seriously, have you checked the 14 bolt bible out on Pirate?
But seriously, have you checked the 14 bolt bible out on Pirate?
yes, i couldnt find that info,
thanks,
Ed
thanks,
Ed
Torque them to 50 ft/lbs and call it good.
Ok, thanks,
Ed
Ed
desertrat67
Hawk Driver
I couldn't either.
Seriously, this is going to be a standard bolt torque by size, since it's just 2 flanges being bolted together. You can look it up here after you figure out what size it is:
http://www.engineershandbook.com/Tables/torque.htm
http://www.engineershandbook.com/Tables/torque.htm
The bolts in question are 1/2" fine thread which the torque isn't listed on that chart. Regardless, those bolts aren't in any kind of load situation.
Hmm, selecting the fine thread page on that site, it's 81-103 ft-lb. If you're not going to use the proper torque, don't get the torque wrench out at all.
http://www.engineershandbook.com/Tables/torque2.htm
http://www.engineershandbook.com/Tables/torque2.htm
Hmm, selecting the fine thread page on that site, it's 81-103 ft-lb. If you're not going to use the proper torque, don't get the torque wrench out at all.
http://www.engineershandbook.com/Tables/torque2.htm
I did not see a page 2 and i just looked again and still can't find a page 2.
I did look at your next link and see the spec there but every one of the bolts in question that i've seen are grade 5 which is 53-73 lbs.
And grade 5 is fine when it's 4 bolts holding a backing plate, but 50 ft-lb is still below spec, and any slop will allow the plate to twist and hog out the holes. Would you really want those bolts to come loose? It's not something you'll see easily when inspecting your truck either. Maybe 50 is "close enough", but that's not what he asked. Scott, I don't understand why you would throw out a random guess to answer a question like that. I guess we just disagree on what constitutes help.
And grade 5 is fine when it's 4 bolts holding a backing plate, but 50 ft-lb is still below spec, and any slop will allow the plate to twist and hog out the holes. Would you really want those bolts to come loose? It's not something you'll see easily when inspecting your truck either. Maybe 50 is "close enough", but that's not what he asked. Scott, I don't understand why you would throw out a random guess to answer a question like that. I guess we just disagree on what constitutes help.
You do realize that the heading says...
[FONT=Arial, Helvetica, sans-serif]SUGGESTED TORQUE VALUES AND CLAMP LOADS [/FONT]
[FONT=Arial, Helvetica, sans-serif]GRADES 2, 5, & 8 CAP SCREWS[/FONT]
When there isn't a given torque value for a particular application THEN you can use the SUGGESTED torque value based on bolt diameter and thread pitch.
I gave him "my help" which no one else seemed to want to do. I build engines for a living and i undertsand the importance of torque values and in this case 50 ft/lbs is suffiecent.
Are you trying to imply that there is a given torque value of 50 ft/lb for these? I'm used to torquing spindle nuts on tapered roller bearings at 50 ft/lb (NO, not on pickups), so I consider that a very light torque.
I also replace anything I find on my truck that is grade 5 with a grade 8, unless it's a specialty fastener. I think we agreed on something once, maybe it'll happen again some time.
Stomis
Professional Amateur
Hey what are you two arguing about?
A grade 8 half inch bolt has a max torque spec of 110-120 depending on thread. Since theres no mechanical interference or moving parts on this object there really isnt a reason to not torque it to the bolts max load or 90% of it.
Torque them to 100ft/lbs if you have grade 8's. I'm sure 50 would hold it fine but its just piece of mind.
A grade 8 half inch bolt has a max torque spec of 110-120 depending on thread. Since theres no mechanical interference or moving parts on this object there really isnt a reason to not torque it to the bolts max load or 90% of it.
Torque them to 100ft/lbs if you have grade 8's. I'm sure 50 would hold it fine but its just piece of mind.
Exactly! Thanks Stomis, that's what I was trying to get across. I just couldn't see going that light when there's no reason for it.
Are you trying to imply that there is a given torque value of 50 ft/lb for these? I'm used to torquing spindle nuts on tapered roller bearings at 50 ft/lb (NO, not on pickups), so I consider that a very light torque.
I did not imply that there was a given spec for that bolt. Now not that it matters in this case but there is more to a bolt torque than just the grade of fastener, would you torque a 1/2" bolt going into steel the same as you would going into aluminum? I highly doubt it.
Why the fock are we even having this arguement when you know DAMN WELL that the info i gave (whether correct per your chart) is suffiecent for the application?
Yes i'm in an arguing focking mood right now with you and any other fockstick that has something negative to say about the info i give.
I may get my first attempt at a ban but who the fock cares. I am sick and tired of having to justify myself to some of you guys.
blazin_blazer
1/2 ton status
i'm almost to the point of bolting my caliper brackets on those 4 bolts, should i use thread locker?
Sorry to have started this argument, I realy appreciate all your guys help, I need all the help I can get.
Thank you very much to all of you.
Ed
Thank you very much to all of you.
Ed
