Lug nuts/bolts doing a Peter Pan

[MinnesotaEric]

I parked my tractor near the entrance of the property I'm slowly turning into a park and one of my neighbors happened to stop and look at my tractor and noticed one wheel had lost bolts and is working loose. The part book says the bolts are M16x1.5 but not how long. Does anybody happen to know the correct length?

Thanks!

 

[ptsg]

Take the last one out and measure? Or any bolt from the other wheel. Or just measure the thickness of the rim, plus the lock washer and flange where it mounts and a add about an 1/8" extra.

Interesting that Kioti only uses 6 bolts on the rear wheels of a tractor that size.

On my much smaller 35hp Branson, they use 8 M14 fine threaded bolts or 2 stugs plus 6 bolts.

 

[EddieWalker]

So odd. I had the same thing happen on my zero turn this year, except I thought I had lost some air in my tire and that I just needed to go slow and get it back to the shop to fill it up. That was a huge mistake on my part because I lost another lug going there and then rounded out the holes in the rim, which I had to replace. $180 later I was able to mow again.

 

[MinnesotaEric]

Apparently the size is M16x1.5x30mm and I'm guessing that it is grade 10.9.

Going to check my local Napas next time they're open.

Ordered 10 of them through BH16X1.5X3YLW - Hex Bolt Yellow Zinc 1.9 [BH16X1.5X3YLW] - $3.46 : Bel-Metric, Metric Hardware, Metric Fasteners, Metric Bolts, Metric Nuts & Time-Sert Thread Repair

And a box of 25 M16 lock washers through Amazon. https://www.amazon.com/SHORPIOEN-Metric-Split-Washer-BC-M16D127B-25/dp/B07S382K53/

I see from the photo the holes are egged out a little. Hopefully I won't need to weld in filler and drill because I don't have a jig to accurately hold a drill and by hand it'll be a PITA (if not good YouTube fodder).

 

[MinnesotaEric]

Take the last one out and measure? Or any bolt from the other wheel. Or just measure the thickness of the rim, plus the lock washer and flange where it mounts and a add about an 1/8" extra.

Interesting that Kioti only uses 6 bolts on the rear wheels of a tractor that size.

On my much smaller 35hp Branson, they use 8 M14 fine threaded bolts or 2 stugs plus 6 bolts.

Sadly, the tractor isn't in the yard to puzzle thing out. Internet looks like it is 30mm long (which seems short without having one in hand).

 

[ptsg]

30mm long looks just about right to me.

 

[Rebeldad1]

What did you torque the rims to?

 

[ruffdog]

This is why I'm not a fan of a flat bolt/nut surface vs a tapered nut/bolt seat system. It can still happen with the tapered but I find it is less often.

 

[4570Man]

This is why I'm not a fan of a flat bolt/nut surface vs a tapered nut/bolt seat system. It can still happen with the tapered but I find it is less often.

A piloted hub with flat nuts is the is the work of almost every medium and heavy duty trucks. They can’t be that bad.

 

[MinnesotaEric]

Here is how things played out on the repair. Torque specs front and rear are 203-234 foot-pounds. I went with 210 foot-pounds.

 

[RickB]

You are not done yet. Those holes are wallered out and the disc is trash. The new lugs will not stay tight. Keep an eye on them.

 

[oosik]

Eric - you are just one of many who have experienced these lug bolt problems. It was enough so that I have "Blue Loktited" ALL the nuts/bolts on all four wheels. One by one - each bolt/nut removed - LockTite the threads - reinstall & tighten back to torque specs.

I've NEVER had a loose wheel nut/bolt. I've never had a loose nut/bolt on the FEL either. I wonder - what is it that you do that will cause these conditions? Perhaps it's as simple as - you just do a whole lot more of "it" than I do. Whatever - the very last thing I need is to be replacing/repairing wheel disks.

All of us out here in the "sticks" know - it's just one repair/fix/replacement after another. It seems to be never ending.

When there is a break - it's time to finish those less important projects.

 

[awhelan]

You are not done yet. Those holes are wallered out and the disc is trash. The new lugs will not stay tight. Keep an eye on them.

Yep, You beat me to it, disk is junk. Order a new one and new studs again if you don't get around to replacing it soon.

 

[mrmikey]

And a box of 25 M16 lock washers through Amazon

Lockwashers....ehhhh, IMHO should be banned. Only time they come into play is when the nut is already loose, by then it's too late. 10.9 studs red loctited into the hubs, 10.9 nuts and 10.9 flats blueloctited and torqued. The wheel is screwed btw, the holes are egg shaped. I'd also check where the studs screw in, that may be screwed also........Mike

 

[Kioti Paul]

Check torque again in 50 hours. If OK then mark nuts / bolts with torque seal. After that, a quick glimpse will confirm nothing is loosening.

https://www.amazon.com/DYKEM-Cross-Check-Tamperproof-Marker-Torque/dp/B01HC3QJ48

 

[ruffdog]

I would have at least repaired 2+ holes by welding so there was no slop. I agree with mrmikey that studs with nuts would be a better attachment method

 

[RickB]

Lockwashers....ehhhh, IMHO should be banned. Only time they come into play is when the nut is already loose, by then it's too late. 10.9 studs red loctited into the hubs, 10.9 nuts and 10.9 flats blueloctited and torqued. The wheel is screwed btw, the holes are egg shaped. I'd also check where the studs screw in, that may be screwed also........Mike

Right there with ya, bud. Pitch the lock washers.

 

[JimR]

Studs with tapered lug nuts is the best way to go.

 

[RickB]

Studs with tapered lug nuts is the best way to go.

They can get loose just as easily.

 

[ptsg]

Just weld the thing to the flange and be done with it.