Kubota wheel and loader nut torque.

[scootr]

I just took ownership of a MX5200 with 147 hrs on her. THe owner told me to keep th ewloader and wheel nuts tightened. After putting 1 hour on the machine I took the 1/2" 18v electric impact and a 24mm socket to these bolts. I was surprise to see some loader bolts turn 1/2 revolution or so. Keep up on this routine or pay the piper!

 

[nyone]

You put a gun with unknown torque output on bolts that have never had that gun on them and are suprised to see them turn?

Use the machine and check them again. If you want an easier way mark all the bolts/nuts with a paint pen then check visualy.

 

[dj1701]

While I suppose that some more delicate parts of a machine call for a torque wrench, wheel and loader nuts will be fine with what I have done all my life. Use a standard hand wrench and the T4tight principle.

 

[5030]

NEVER, never use an impact wrench to tighten ANY bolt. Impact wrenches are fine for loosening them but tightening them, that is a big NO. Always snug them up and then use a torque wrench to set them to the torque spec listed in your owners manual or online (many sources for prevailing torque specs online for metric as well as SAE fasteners).

Reason being is, using an impact wrench to tighten a bolt, you can be stretching said bolt close to it's yield point and promoting failure.

Even a cheapo beam torque wrench is better than an impact and HF sells inexpensive (as well as more expensive) torque wrenches for a reasonable price.

 

[5030]

While I suppose that some more delicate parts of a machine call for a torque wrench, wheel and loader nuts will be fine with what I have done all my life. Use a standard hand wrench and the T4tight principle.

If I used my 1/2" drive Thor impact wrench to tighten ANY bolt on my tractors, I bet I could twist all of them off, no problem. Far as wheels go, there is is specific torque value for them as well. My Kubota's take 175 foot pounds on the wheel nuts where as my car takes 110 foot pounds on the lug nuts.

If anything and you insist on using an impact to tighten bolts, invest in a set of 'Torque Sticks' and use them. Each one will have a specific torque yield value.

Delicate has nothing to do with it. Yield on a bolt or stud has everything to do with it...

 

[ptsg]

NEVER, never use an impact wrench to tighten ANY bolt. Impact wrenches are fine for loosening them but tightening them, that is a big NO. Always snug them up and then use a torque wrench to set them to the torque spec listed in your owners manual or online (many sources for prevailing torque specs online for metric as well as SAE fasteners).

Reason being is, using an impact wrench to tighten a bolt, you can be stretching said bolt close to it's yield point and promoting failure.

Even a cheapo beam torque wrench is better than an impact and HF sells inexpensive (as well as more expensive) torque wrenches for a reasonable price.

Specially in this particular case, where the loader mount bolts thread into cast iron. An accidental slip on the trigger of the impact gun and there goes the threads on the casting.

 

[dj1701]

If I used my 1/2" drive Thor impact wrench to tighten ANY bolt on my tractors, I bet I could twist all of them off, no problem. Far as wheels go, there is is specific torque value for them as well. My Kubota's take 175 foot pounds on the wheel nuts where as my car takes 110 foot pounds on the lug nuts.

If anything and you insist on using an impact to tighten bolts, invest in a set of 'Torque Sticks' and use them. Each one will have a specific torque yield value.

Delicate has nothing to do with it. Yield on a bolt or stud has everything to do with it...

I don't own a torque wrench. I've been doing it by feel for 40 years and never had a problem. I guess some folk can get a bit overzealous and start breaking stuff.

 

[5030]

I don't own a torque wrench. I've been doing it by feel for 40 years and never had a problem. I guess some folk can get a bit overzealous and start breaking stuff.

Maybe it's time to buy one. Not that expensive, I think under 30 bucks for a 1/2" drive Pittsburg at HF Now, they aren't all that accurate but better than 'good-n-tight' by a long shot. In my case I need accurate plus I need one that registers torque in both directions so then the price climbs accordingly.

I have the ICON one from HF in 1/2 drive and it was $105 bucks. Just as accurate and repeatable as the ultra priced Snap-On at 500 clams.

Cheap wrenches only register tightening torque. I need torque values for left hand threads as well.

 

[bigtiller]

I just did this yesterday with my 3039R. The book calls for 103 ft. lbs. I used a 100 lb. torque stick and followed up with a torque wrench.

 

[sea2summit]

I don't own a torque wrench. I've been doing it by feel for 40 years and never had a problem. I guess some folk can get a bit overzealous and start breaking stuff.

Statements like this are why I keep coming back to the internet lol

 

[Gator6x4]

I use a electric impact wrench when rotating the tires on my car and truck. I do not hammer the the nuts back on i get them tight and then use a Torque wrench to achieve the proper setting. I use a torque wrench although I also have torque extensions used in garages for removing and installing wheels.

I have used the torque extensions on other repairs and have found them to be close. But close only counts in horse shoes.

torque sockets for impact wrench - Google Search

 

[Chewwy]

I have never ever seen any mechanic working in a garage, auto dealership, or tire shop use a torque wrench on lug nuts.

 

[K5lwq]

Using a torque wrench is the correct thing to do. There are plenty of examples as to why. But to each their own. Tighten away folks.

 

[Gator6x4]

I have never ever seen any mechanic working in a garage, auto dealership, or tire shop use a torque wrench on lug nuts.

They use the torque extensions I posted a link to. Amazon or Snap On will sell you one of these for @204.00. Or Harbor Freight and Amazon will sell you the same, different brand name for $59.00.

https://www.amazon.com/Genius-Tools-Torque-Extension-410EXT/dp/B000LZ91WC/ref=asc_df_B000LZ91WC/?tag=hyprod-20&linkCode=df0&hvadid=241901362930&hvpos=&hvnetw=g&hvrand=15744956653263776189&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1021338&hvtargid=pla-568757412382&psc=1

 

[scootr]

Okay - I see.
Luckily the battery impact only turned a few of them so I suspect it was not capable of exceeding the torque value of the lot of them.
I ordered the set above.
Thank you for the information

 

[5030]

I have never ever seen any mechanic working in a garage, auto dealership, or tire shop use a torque wrench on lug nuts.

But I bet they use torque sticks... Even the tire jockeys at Wal Mart use them. HF sells a nice color coded set for under 50 bucks and Torque Test Channel on YT tested them for accuracy and found them to be very close to the stamped in spec.

The other thing you always want to do (on a tractor or a car or truck) is mount the wheels, torque them and then drive it around a bit and check them again. That especially holds true for alloy rims.

 

[nyone]

Okay - I see.
Luckily the battery impact only turned a few of them so I suspect it was not capable of exceeding the torque value of the lot of them.
I ordered the set above.
Thank you for the information

If your relying on your max torque output of the impact gun to be your final torque your useing it wrong. Every gun is different and every bolt is different. You need to get a feel for things and dont expect a big gun to stop turning the bolt.

 

[Gator6x4]

If your relying on your max torque output of the impact gun to be your final torque your useing it wrong. Every gun is different and every bolt is different. You need to get a feel for things and dont expect a big gun to stop turning the bolt.

True I have a 1/2 inch battery powered impact wrench that is rated at 1200 plus foot pounds of torque. Don’t think I would hammer away at lug bolts with it.

I know this I have a Woods Bush Hog with a recommended torque on the blade retention nut of 695 foot pounds I believe. The battery powered impact will zip the nut of the bolt like it wasn’t tight.

A neighbor had a bolt on his Haybine giving him problems. I loaned him the impact wrench and cautioned him a couple of time to not hammer or he could break the bolt. He evidently forgot the warning because when he brought the wrench back a couple days later and I asked him if the machine was fixed and he laughed and said yes after I went to town and got a new bolt for the broken one.

 

[oosik]

For the first five years, or so, I checked the lug nuts on my M6040 every fall. Real PITA as I become older. 56 lug nuts in total.

Then four years ago I did this. Remove one nut at a time. Blue LokTite. Retighten with my torque wrench. Mark each nut with marking pen.

Now simple visual inspection is all that's required.

Actually in the 13 years I've owned this tractor - not a single nut has worked loose.

 

[Monster5601]

I have never ever seen any mechanic working in a garage, auto dealership, or tire shop use a torque wrench on lug nuts.

If you purchase new tires at a Costco you will discover wheel removal and reinstall are all manual, with no impacts, air or electric. Wheels lugs are torqued with a torque wrench and you will get a phone call in a week or so to stop back and have the lug nuts torque checked.

I use a Rigid 18-volt impact to loosen the lugs and the automatic setting, which stops the impact when it detects resistance, to tighten the lugs. Once I'm done rotating the tires, I torque the lug nuts with a torque wrench. A week or so later I re-torque the lug nuts and typically find one or two lug nuts on each wheel tightening another quarter to a third of a turn.