Gunny65
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- Bonners Ferry, idaho
Okay, I am taking the wheel apart to put on new tires. I had to get a new/bigger torque wrench to get the nuts to come loose. Now I have the nuts loose but the rust from sitting and never being cleaned is holding them very tight (along with the distorted lock-nut characteristics). I am afraid if I take them all the way off when they are this tight the threads will be shot either on the nut or the stud. Don't screw up the stud. They are expensive and a pain to replace.
Where is a good source for new wheel nuts?
Technically you are not suppose to reuse the lock-nuts. I have heard people use them up to 3 times but the TM and McMaster-Carr indicate these are one time use lock-nuts. I will re-use two wheels worth of lock-nuts and see if there any problems. If there are, I will report back.
I think, but am not sure, that the bolts are 5/8"? (The wheel nuts on the M939 series truck, according to the TM, are 3/4" 16TPI Fine) The 5/8" are possible I guess but that may be for the Deuce and a half and/or older wheels, not sure which applies. My M939A2 uses the 3/4" nominal 16 TPI fine distorted lock nuts, flange style. I provided a link below for both sizes.
Thanks.
EDIT: The original purchase for the 5/8" nuts and die were too small. I went in a read the TMs that apply to the M939 and posted links to the TM sizes that apply. "locknut and threading die, 3/4" 16TPI fine." I was originally incorrect in my visual assessment of the stud size. That is what I get for not actually measuring. Nobodies fault but mine.
Amazon: Union Butterfield 2025(UNF) Carbon Steel Hexagon Threading Die, Uncoated (Bright) Finish, 5/8"-18 Thread Size
If you have the 3/4" 16TPI Wheel Nuts (M939 series) Distorted "Lock Nut": McMaster-Carr: http://www.mcmaster.com/#90949a119/=109qyyo
This is the rethreading die 3/4" 16TPI: http://www.amazon.com/Bosch-B46027-4-16-Black-Oxide/dp/B000WACOWK/ref=cm_cr_pr_product_top?ie=UTF8
Where is a good source for new wheel nuts?
Technically you are not suppose to reuse the lock-nuts. I have heard people use them up to 3 times but the TM and McMaster-Carr indicate these are one time use lock-nuts. I will re-use two wheels worth of lock-nuts and see if there any problems. If there are, I will report back.
I think, but am not sure, that the bolts are 5/8"? (The wheel nuts on the M939 series truck, according to the TM, are 3/4" 16TPI Fine) The 5/8" are possible I guess but that may be for the Deuce and a half and/or older wheels, not sure which applies. My M939A2 uses the 3/4" nominal 16 TPI fine distorted lock nuts, flange style. I provided a link below for both sizes.
Thanks.
EDIT: The original purchase for the 5/8" nuts and die were too small. I went in a read the TMs that apply to the M939 and posted links to the TM sizes that apply. "locknut and threading die, 3/4" 16TPI fine." I was originally incorrect in my visual assessment of the stud size. That is what I get for not actually measuring. Nobodies fault but mine.
Amazon: Union Butterfield 2025(UNF) Carbon Steel Hexagon Threading Die, Uncoated (Bright) Finish, 5/8"-18 Thread Size
From McMaster-Carr: 5/8"-18 | 10each | 90949A112 | $4.59 - the part number is in yellow. |
If you have the 3/4" 16TPI Wheel Nuts (M939 series) Distorted "Lock Nut": McMaster-Carr: http://www.mcmaster.com/#90949a119/=109qyyo
This is the rethreading die 3/4" 16TPI: http://www.amazon.com/Bosch-B46027-4-16-Black-Oxide/dp/B000WACOWK/ref=cm_cr_pr_product_top?ie=UTF8
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