Can I torque loader bolts with impact wrench?

[farmer2009]

Don't remember what model it was but had a tractor growing up the lug nuts torque spec was 1/4 turn before they broke. Needless to say it took a few tries to get it right.

 

[kevin37b]

Yessir ,I have an elbow that clicks when it is tight enough .

 

[Gordon Gould]

I find a torque wrench a pretty handy thing to have around. After I started using it regularly I could see that before I got it I was over tightening most things by quite a bit.

 

[Gator6x4]

To answer your question, yes you can, "IF". Now the IF part, if you can obtain a set of the wheel torque extension sockets used to torque wheel in the proper torque by using an air wrench.

View here; Amazon.com: torque wrench extension - Torque Wrenches / Wrenches: Tools & Home Improvement

 

[TomSeller]

I tighten them as tight as I can and then turn another 1/4 turn.

I wish I could do that.

 

[stuckmotor]

Some posts I've read lead me to believe there's a torque spec for dry bolts and and a different one for lubricated bolts. I can't remember ever seeing more than one spec for anything I owned. Is there a rule of thumb on this?

 

[the old grind]

'Torque specs' often express or imply a 'lightly oiled' bolt, but this can sometimes be reduced by 5-10% if using an anti-seize compound. Expect possibly less bolt stretch if threads are rusty, dry, or chalky.

btw: Regardless of thread engagement 90%+ of the tension load will bear on the first thread. Engaged threads below won't allow stretch, so the rest is carried by the 2nd thread. One might have wondered why bolts tend to snap off just below flush if over-torqued.

'Torque bars' as used at the tire shop can get pricey above 200 ft lbs (use with 3/4" drive) and the HFT TWs that everyone should have & use (1/2" drive) come up way short of that.

 

[stuckmotor]

So, if I coat the threads with greese or antiseeze I should use 5-10% less torque? I hope I've got this right.

 

[the old grind]

Ssssort of. 'Heavy' thread lubes are very much a YMMV thing vs 'lightly oiled'/torquing to spec, since not all thread lubes are the same. Bolt tension will be higher if a bolt turns way easier with an EP (extreme pressure) lube on threads, but usually no harm going to full torque.

Loader bolts are expected to get seriously yanked on in use so they won't snap easily if not substantially over-tightened. You might just stick to the 'lightly oiled' to minimize corrosion if you imagine grease or A-S would allow them to work loose too easily or attract grit.

 

[94BULLITT]

Some posts I've read lead me to believe there's a torque spec for dry bolts and and a different one for lubricated bolts. I can't remember ever seeing more than one spec for anything I owned. Is there a rule of thumb on this?

A lubricated Bolt will turn easier so there are different specs. It is also important to have the threads clean before torquing.

Hey folks any help/advice appreciated! Just bought a Mahindra 3616 and have a little more than 10 hours on it. According to manual I need to re-torque loader and frame bolts to spec. Can I use my pneumatic impact wrench or do I need to spend more money and buy a torque wrench?

If you use your air wrench you have no idea how tight they are. You need to use a quality torque wrench. Don't forget to retorque the wheels.