Joined: Oct 02, 2014 Posts: 2005 Location: South Carolina, Dorchester County
Posted: Sat Apr 18, 2020 8:22 pm Post subject:
Hi Kevin,
After you know the size of any fastener in question, you can easily Google "SAE torque table" and you'll get many hits for torque value for any nut-bolt combination, including M416 lug nuts --- which just happen to be 1/2-20 thread size/pitch (threads per inch). The M416 lug nuts also happen to be the same size as the lug nuts on your M38 and naturally use the same torque value.
The easy answer: 60-75 foot-pounds. I do 65 on mine.
I should add, because I don't know how familiar you are with mechanics, that lug nuts should be torqued every other one opposite each other. In other words, don't torque them each next to each other (going clockwise or counter-clockwise from one to the next).
Obtaining a set of tech manuals is essential to this hobby and will assist you greatly in identifying what size and material nut and bolt you're dealing with. I highly recommend them. Big difference between Grade 2, Grade 5, and Grade 8 nuts and bolts. Mix and match or use them in the wrong place or torque them to the wrong value and you're in for quite a learning experience!
I won't bother posting it because the answer would be the same, but I see you ask the same question over on the G503 forum.
Did you see my PM about jerry can racks?
Good luck! _________________ Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
Good advice Ron. Your torque spec was close but the TM 9-2330-251-14P dated 1962 under preventative maintenance page 5 says 60-65 Ft Lbs. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Joined: Oct 02, 2014 Posts: 2005 Location: South Carolina, Dorchester County
Posted: Sat Apr 18, 2020 11:32 pm Post subject:
My bust! I picked the spec out of the Willys Service Manual for lug nuts.
I keep forgetting that not all manuals were created equal, and I should know better by now! _________________ Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
The industry standard for selecting the correct torque is:
1 - Check maintenance instructions in the appropriate manual for a listed task specific torque value then use it correctly.
2 - If there was no task specific torque values listed in the maintenance procedure in the appropriate manual then go to that equipment's general torques source for the torque setting.
3 - If that equipment doesn't offer a general torque chart or their chart does not include the thread pitch/fastener diameter/fastener class needed then go to an industry standard torques chart.
For our member's needs I have all these charts in my photo album. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Kevin, there are several editions of that TM. Which one are you using? I have 3 of them, 1962, 1970 & 1990. I know there's also a 1985 out there. 1962 shows 60-65, 1970 shows no torque value, and 1990 shows an unbelievable 85 Ft Lbs.
1962 - Is still loading on my cloud. As soon as it finishes loading I'll add it to our Downloads Page. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Probably the result of an un-acceptable lost wheel record over the years. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
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I picked the spec out of the Willys Service Manual for lug nuts.
