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Posted: 12/5/2010 7:42:19 AM EDT
| I get the gas tube holes/slots aligned at 27-28 foot/pounds and cannot go to the next slot even at the highest torque. Is it OK with 27-28 foot/pounds ? I've changed two barrels and it's the same for both. |
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From the FAQ's in the assembly guide.
Q2. What about the torquing three times, to 80ft/lbs like the TM says? A2. While using a torque wrench is never a bad idea, it is not required. Snug it up, three times, then line up with next gas tube hole. Sometimes this will take a lot of force, sometimes just a little. If you arent sure, or nervous, go to the local auto parts store and borrow a torque wrench for ft. pounds. The point of snugging it up three times, is to mate the aluminum upper receiver threads together with the barrel nut. FOUND HERE |
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Quoted:
Thanks. I use a torque wrench. I was thinking to go with 30-35 f/p and then to "Dremel" one of the barrel nut ear. Leave the dremel in its case. If you are only in the upper 20's then there is no reason that you can not get to the next hole. Just add a little more grease and work the barrel nut back and forth till it gets there. Put you torque wrench at a higher value and get that next hole whether it clicks or not up to 80 ft/lbs. |
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Quoted:
Quoted:
Three isn't a magic number. If you can't get it to the next barrel nut notch after three snug-and-loosens, do some more. I've done them nine or ten times. Thanks. I'll try it again tomorrow. Closely inspect the inside of the barrel nut as well. I have seen a couple that had burrs left over from threading. |
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