Carbon 337 Lug Nut Torque

[LifeMadePortable]

Hello all.

BRAND new to the RV world here. My wife and I are full-timers right out the gates, with a brand-new '19 5th wheel 337.

There's a warning about wheel separation, stating that I need to torque the lug nuts. Problem is, there's a side note about 9/16ths studs receiving a different torque level and I have no idea which studs mount our wheels.

We've searched the manual which is where we found this hiccup.

Can anyone shed some light on this for me?

[xrated]

You might take a flashlight and shine it on the end of one of the studs. On my trailer, it is stamped...1/2"......yours might be stamped also. Also, check the Keystone manual for the torque setting for whichever size stud your trailer has.

On a side note......was your avatar pic taken up on Deals Gap?

[OregonDuck]

I was also confused. I believe most models Keystone manufactures are 1/2"? When I was looking into this I found this video. Don't know if it would be of any help, but here it is anyhow: https://youtu.be/NpOWLMA2NpE

[LifeMadePortable]

@xrated ... it is indeed Deals Gap. I operate a sport touring motorcycle site where we run paid group tours. The dragon is an optional excursion, though I MUCH prefer the Charahala or even better, our Blue Ridge Parkway alternate (hardly even touches the BRP).

Anyhow ... I was hoping I wouldn't have to remove the lugs so as to see the studs but if that's required, so be it.

Are the figures etched into EVERY studs?

Oh ... and you know what? Let's make sure of this ... the stud is the threaded rod that the lugs tighten onto, yes?

(no harm makin' sure we're wrenching in the same language, so to speak)

[bobbecky]

Most likely your rig has Dexter 7,000 lb axles that have 1/2" studs, and the final torque should be 120 ft lbs. As far as I know, they have not used axles with 9/16 studs for a long time.

[xrated]

Originally Posted by LifeMadePortable

@xrated ... it is indeed Deals Gap. I operate a sport touring motorcycle site where we run paid group tours. The dragon is an optional excursion, though I MUCH prefer the Charahala or even better, our Blue Ridge Parkway alternate (hardly even touches the BRP).

Anyhow ... I was hoping I wouldn't have to remove the lugs so as to see the studs but if that's required, so be it.

Are the figures etched into EVERY studs?

Oh ... and you know what? Let's make sure of this ... the stud is the threaded rod that the lugs tighten onto, yes?

(no harm makin' sure we're wrenching in the same language, so to speak)

That sounds like a pretty cool business adventure to be in. From my driveway to the start of the section of U.S. 129 that folks call the Dragon, which is Tabcat Bridge where the road turns away from the lake and starts up the mountain is.........18 miles. Needless to say, I've been through there a few times myself.

And yes, we are both on the same page....the "threaded rod" part is what we are talking about. And honestly, I don't know if they are all marked or not. I went out to look at mine a while back and the first stud I looked at had the stamping on it....1/2".....and I never bothered to look at the rest of them. I bought a 120 ft. lb. torque stick for my 1/2" drive impact wrench and keep it stowed in the trailer storage compartment.

I've not ridden in the Chattanooga area on the motorcycle before....we usually take the bicycles when we go there....or do a bit of hiking in the area. The last time we were there we stayed at the Holiday Travel Park....just a mile or so south of the 1-24 and I-75 junction. It's a nice campground and pretty centrally located for the area.

[notanlines]

Okay, this is a long way off topic, but once an old fart has ridden both directions of "the Tail" with passenger and dog in the sidecar, on the same morning, it is easy to see how your shoulders end up in the condition they are. Flat-steer Road Kings with sidecars are better relegated to "The Mighty Python," I believe it is Virginia 58E. It is also a wonderful ride and a lot easier with a sidecar!

[xrated]

Originally Posted by notanlines

Okay, this is a long way off topic, but once an old fart has ridden both directions of "the Tail" with passenger and dog in the sidecar, on the same morning, it is easy to see how your shoulders end up in the condition they are. Flat-steer Road Kings with sidecars are better relegated to "The Mighty Python," I believe it is Virginia 58E. It is also a wonderful ride and a lot easier with a sidecar!

Jim, I've been on 58 in VA several times over the years on motorcycles, and it's an awesome road. It's been a while since I've had the motorcycle up that way, but it's on the list of places to enjoy again.

And I can see that riding a bike that you literally have to steer through the corners would wear a fellow out....vs. counter-steering and leaning through those corners.

[LifeMadePortable]

*temporarily* BACK TO THE LUGS! (LOL ... we can have to convos at once) ...

If I post a picture of the rims, would you folks know what I'm workin' with? I also plan to call the dealership.

As for the dragon, I really don't "enjoy" riding the dragon unless it's void of activity. Too many slow rollers police it and too many unskilled hooligans want to knock it off the docket.

It's an option for our signups ... but only an option. I much prefer this, taken from our vodcast on the "advanced-only" routes ...

The forum's forced embed doesn't make use of my intended video start time (21:09), so you'll have to do that yourself if you want to see the side-convo point I opted to use in this response ...

https://youtube.com/watch?v=SHaMqF5AQeo&t=1269s

... we'll be running the tour again come Spring.

[JRTJH]

Originally Posted by LifeMadePortable

...
Forum keeps forcing an embed and I selected a specific start point, so lose the space before "watch": youtube.com /watch?v=SHaMqF5AQeo&t=1269s
...

No need to try to "cheat the forum" by posting links with a space. Just post the link, if it's not a permitted site, we'll let you know just as fast as we'll let you know the "camouflaged link" is not permitted.... The moderators keep a very close eye on every (yes EVERY) post that's made on the forum, so you won't find a need to "cheat the forum" by typing phone numbers with words and numbers, email addresses with spaces or abbreviations or any other form of "circumventing the computer flags"... It's hard to avoid getting caught when a human reads every word posted on the forum.....

[ctbruce]

Originally Posted by JRTJH

No need to try to "cheat the forum" by posting links with a space. Just post the link, if it's not a permitted site, we'll let you know just as fast as we'll let you know the "camouflaged link" is not permitted.... The moderators keep a very close eye on every (yes EVERY) post that's made on the forum, so you won't find a need to "cheat the forum" by typing phone numbers with words and numbers, email addresses with spaces or abbreviations or any other form of "circumventing the computer flags"... It's hard to avoid getting caught when a human reads every word posted on the forum.....

Yep. Every. Single. Thread.
Do you have any idea how many times tires and A/C comes up in a week? Cross-eyed moderator rant over. Now back to our regularly scheduled program.

[LifeMadePortable]

As for the task at hand, it seems that 110 ~ 120 ft-lbs is the correct vague/grey variable. I figure 115 ft-lbs is a fine target.

Originally Posted by JRTJH

No need to try to "cheat the forum" by posting links with a space. Just post the link, if it's not a permitted site, we'll let you know just as fast as we'll let you know the "camouflaged link" is not permitted

I'm not even worried. I wasn't trying to cheat anything, nor was I attempting to camoflauge my link.

I simply wanted it to start at a specific point but this install of PHPBB (as it would appear) doesn't translate query params properly.

[xrated]

Originally Posted by LifeMadePortable

As for the task at hand, it seems that 110 ~ 120 ft-lbs is the correct vague/grey variable. I figure 115 ft-lbs is a fine target.



I'm not even worried. I wasn't trying to cheat anything, nor was I attempting to camoflauge my link.

I simply wanted it to start at a specific point but this install of PHPBB (as it would appear) doesn't translate query params properly.

So, did you ever find a stamping on the stud to verify that it is indeed 1/2"?

[bobbecky]

All you need to do is take a caliper or micrometer, size it against the outside of the threads, of course with the lug nut off, and it will read .500", or very close to that, or it will read .562", or very close to that too. .500" is 1/2", and .562" is 9/16".

[LifeMadePortable]

Originally Posted by xrated

So, did you ever find a stamping on the stud to verify that it is indeed 1/2"?

Nope. Just walked in with the tire iron and found a comparable socket.

3/4" ... not mentioned in the manual but dealership says shoot for 115 ft-lbs.

Originally Posted by 77cruiser

Do you lube your lugs?

Didn't need any anti-seize because they're in spec, if that's what you mean. Something about this appears as if you're telling me I need to check my "blinker fluid levels".

Originally Posted by CWtheMan

Wheel nut torque is on page 24.

Thank you!

Originally Posted by Bob Landry

You have 1/2" lugs and the torque spec is 120 ft lbs. Don't overthink it. Tighten in increments in a star pattern and do a check after 50 miles.

Trying not to but our paper manual over "fails" it. ;-)

Originally Posted by notanlines

Flat-steer Road Kings with sidecars are better relegated to "The Mighty Python," I believe it is Virginia 58E.

Interesting.

Originally Posted by xrated

Jim, I've been on 58 in VA several times over the years on motorcycles, and it's an awesome road.

I'm partial to 614 ~ 773 ~ 677 as a warmup for 691 ~ 620 ... then cruise the BRP aaaaall the way down to 221 ~ BRP again ~ 226 ~ 226A ~ 1100 ~ 1167

... then onto, wait ... this is North Carolina.

Ah, well. "They're back there somewhere" LOLOL

[Andymil]

3/4” is the size of the nut, not the stud. The stud is 1/2” if the nut is 3/4”. Bolt heads are usually 1.5 times the diameter of the threaded end and nuts are usually the same, but I have seen nuts that are 1/8” bigger than the bolt heads.

https://www.boltdepot.com/fastener-i...Head-Size.aspx

[xrated]

Originally Posted by Andymil

3/4” is the size of the nut, not the stud. The stud is 1/2” if the nut is 3/4”. Bolt heads are usually 1.5 times the diameter of the threaded end and nuts are usually the same, but I have seen nuts that are 1/8” bigger than the bolt heads.

https://www.boltdepot.com/fastener-i...Head-Size.aspx

I just read this and started to reply with basically what you said....if the nut is 3/4", the stud is 1/2". You beat me to the draw!

[77cruiser]

Originally Posted by LifeMadePortable

Didn't need any anti-seize because they're in spec, if that's what you mean. Something about this appears as if you're telling me I need to check my "blinker fluid level.

That's good. I usually don't check the blinker fluid, some guys are very anal about it though.

[PARAPTOR]

Thought I remember seeing half inch stud torque requirements stating 110 lbs for AL wheels and 120 Lbs for steel. Then again at my age I get excited when I remember where I put my keys a half an hour ago

Should there be a difference on torque requirements for steel or AL wheels ?

[xrated]

Just curious Chip.....do you guys divide it up by sections......each mod takes so many sections and another mod takes some other sections and so on.....or do you all read the entire thing? Might be time for the Evelyn Wood speed reading course! You probably will only understand that if you are an old guy like me!