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Impact wrenches should be banned!

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rlitman

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Long Island
I'll admit I'm not familiar with the vehicle in question, but here's a thought:
If you removed the rotor and dust shield, would that allow better access from the back to get penetrating oil, even heat, etc?
Sometimes it takes time for that penetrating oil to do it's job. I'm just thinking I'd rather do the job with the steering knuckle on the car instead of on the bench, but again, I'm not there, haven't done one, etc.

Rotor, yes, but you can reach behind with a spray can and red-straw without removing the rotor. However, the rotor will need to come off anyway, so there's not much point to that.

Dust shield, no. The bolts go through it.
 

MFolks

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Springfield Mo.
On some vehicles one side has normal right hand threads on the lug nuts,but the other side is left hand threads......
 

G-Ram

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On some vehicles one side has normal right hand threads on the lug nuts,but the other side is left hand threads......



This topic isn’t about lug nuts though...


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Robert Haas

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If the last tech used an impact to install it,..... It seems he had access you do not.


FYI, using extensions on impacts reduces their power to the point of them being worthless.

This is the difference between a "tech" and a mechanic. A tech will fitz around trying for hours to get a proper tool on a fastener. A mechanic will try 3 or 4 different approaches and then pull the damn hub off the vehicle. With the proper tools you would have that part on the bench in 45 minutes and that is taking your sweet *** time.

You can't break it loose on the vehicle? then remove the whole damn assembly. Getting in and using an Oxyacetylene torch is the true sign of a cobby hack that could not give a **** they are destroying parts all around the area they are working.


I would not let you work on my wheelbarrow
 

2ndGearRubber

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Pittsburgh
Impact wrenches should be banned! Or you should have to take a test to buy one, or maybe they should only work in the Loosen direction, not the tighten direction!

I spent a few hours battling the wheel hub bearing bolts on my Jeep Grand Cherokee, the right sides came off with a minimum of swearing, Kroil, and a blowtorch, the left side still hasn't come off so I will probably need to grind them out. Some dummy installed them with an impact wrench.... I will probably have to replace the whole steering knuckle just because some gorilla overtightened the darn things!

This is why I have to work on my own vehicles, can't trust mechanics (especially chassis mechanics) to not mangle parts.



Get a real torch. Are they even non-original hubs? Make the "ear" where the bolt goes through glow cherry red, gun them out. This is SOP in the rust belt on most cars.
 

2ndGearRubber

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If the last tech used an impact to install it,..... It seems he had access you do not.


FYI, using extensions on impacts reduces their power to the point of them being worthless.

This is the difference between a "tech" and a mechanic. A tech will fitz around trying for hours to get a proper tool on a fastener. A mechanic will try 3 or 4 different approaches and then pull the damn hub off the vehicle. With the proper tools you would have that part on the bench in 45 minutes and that is taking your sweet *** time.

You can't break it loose on the vehicle? then remove the whole damn assembly. Getting in and using an Oxyacetylene torch is the true sign of a cobby hack that could not give a **** they are destroying parts all around the area they are working.


I would not let you work on my wheelbarrow



Drop the tie-rod and pull the caliper bracket and you can hit two of them with a universal, top one with a wobble. I like to try to break them free with an offset wrench, and then gun them out with a 3/8.


Not sure what part of the country you live in, but using a torch doesn't make someone a hack. In this area you can't change some serpentine belts without pulling the bracket for the manual tensioner off, and heating/quenching it a few times. :confused:
 

2ndGearRubber

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The compact one is new even, I bought it specifically for this job. It is supposed to have 700 foot pounds of breakaway torque.


Compact impact? Don't buy the hype. That's a good bit of the issue there, as the 700lbs it's rated for is likely closer to 200. The nonsense the pneumatic companies use to rate guns has nothing to do with real world performance.

My IR2235 has "1100ft/lbs". I can promise you it does not.
 

BDT/NWMN

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Erskine, Mn
Driveway Mechanics are an interesting bunch. They often think their skills surpass those of the PROPERLY EDUCATED AND TRAINED PROFESSIONALS. They attempt to "fix" their own vehicles, and often end up putting them on Craig's List; stating it just needs a minor, $20 part.. The components of the vehicle that they haven't farted around with ""might"" be suitable for salvage use. Their $1200 stereo and $1000 chrome wheels they added to the rod knocking rust heap add great value to their price; but only in THEIR mind.

The sad thing is; some of these Driveway Mechanics talk some """"shop"""" into giving them a """job"""...

I have witnessed these same events countless times.
 

G-Ram

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Getting in and using an Oxyacetylene torch is the true sign of a cobby hack that could not give a **** they are destroying parts all around the area they are working.

I would not let you work on my wheelbarrow


You clearly do not live in the rust belt. There’s nothing “hack” about using heat to aid the removal of a bolt or nut.




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bob15

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Northeasten, CT
Take it back to the shop that tightened them and ask them to loosen them for you.....then you tighten them to your spec.
 

joecon

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Oct 4, 2010
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680
If you have not rounded off the heads yet you have not applied enough torque yet.
Get a socket or a wrench on the bolt then turn it with what ever you need to get the
ob done. If clearance is a issue wrap a chain around the wrench and run it to a long
bar and use the bar to give you the leverage you need.
 

Handyandy23

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Those bolts aren't that big so I'm surprised they could even be installed that tight without having snapped off. I just did a wheel bearing on my wife's Equinox, and the bolts had a 13mm 6 point head. Probably about M10 bolts? They're high grade but not indestructible.

I ran them down with an impact and then torqued them manually, mainly because I was worried I would shear them off if I hit them too hard with the impact.

I'd bet the issue is either corrosion or someone used some heavy Loctite on them. Hard to see them getting torqued to that high of torque without breaking on install.
 

ken w.

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Western New York
I'm in the rust belt and I use heat before I even try to take them off with an impact. As others have mentioned , I think you need to heat it a lot more. I'm willing to bet someone put some red Loctite on them. I use Loctite , but I use blue as I know I'll most likely replace that hub in 2-3 years in my area. Another thing is when using an air compressor , you really need too turn the pressure up to 100 + psi and use a 3/8" air hose to get the max out of your impact wrench. I'm sure I'll get some flack for saying this but air tools work better with a bit more pressure than 90 psi. A 1/4" air hose restricts too much and you don't get enough volume for the air tool to preform well. Good luck with it.

" a torch & a vise grip can be your best friend sometimes "
 
Last edited:

MattPersman

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Indiana
Those old ones you get new bolts for. It’s very common for them to be hard to get off or even break coming out.

I’ve worked on dozens and dozens if not more.

Wouldn’t have mattered if the guy or gal used a tq wrench (which they didn’t) or an impact to tighten them you would be in the same spot

I know this site is full of torque gurus that use even the tq screwdrivers for trim screws but in the real world power tools get used on stuff like that by pros everyday every shop


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u118224

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Northern MI
Doesn’t Jeep use torx bolts on their unit bearings, to be removed with an e torx socket? Some posters have referenced 12 point, or triple square. I haven’t seen that on Jeep’s. Just curious.
 

Handyandy23

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Also if the bolts are that corroded and hard to remove, just wait until you get the bolts out and try to remove the hub from the knuckle! If you're stuck on the bolts you have no hope of getting the hub out of the knuckle.
 
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Rlfd213

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Some people don’t know what the different color lock tight does. I’ve seen people use green on stuff because they think it’s all the same. Also with dissimilar metals a lot of stuff gets bonded together.
 

dsimatt

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Don't laugh, this thread is serious. No hand over your impact until you get your licence. The OP has certificates and stuff.

I've got rights and a life time NIA membership so over my dead body I'll give up my impacts.:thumbup:
 

tutti57

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Mar 26, 2018
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It's probably corrosion or thread lock. Are you using an electric sears corded impact or a 1/4" ratchet?

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MBfreak

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Correctly used there is nothing wrong with an impact wrench.
Make sure the nuts/screws are undamaged, get the correct torque stick and socket and tighten up.
The torque stick gives very consistent results. Used them for years in the assembly of EHV GIS switchgear. Post assembly 10 % quality check of the fasteners ( many thousands, all critical) always came out right.

Ola
 

Handyandy23

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Correctly used there is nothing wrong with an impact wrench.
Make sure the nuts/screws are undamaged, get the correct torque stick and socket and tighten up.
The torque stick gives very consistent results. Used them for years in the assembly of EHV GIS switchgear. Post assembly 10 % quality check of the fasteners ( many thousands, all critical) always came out right.

Ola

Agreed on the torque sticks, where you have clearance / access to use them. I use them on lug nuts and then check with a torque wrench after (usually use a torque stick about 10 ft-lbs less than desired torque and finish with manual torque wrench). They are always very close to torque and only need a few degrees rotation to click.

Also much better than the "try to put them on loose with only a hammer or two" method. That way you have some nuts probably over-torqued (don't budge before clicking with the torque wrench) and other ones that you need to turn on several rotations to reach torque. The sticks are easy and effective.
 

johninct

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Dec 21, 2010
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How tight can someone really tighten a lug nut without snapping the stud? We snapped a lug nut when I first got my Snap-On ct3850 and that puts out maybe 240 ft lbs.
 

j.schaef

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Jul 30, 2018
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Washington
I'll third the torque sticks. They are the best. Especially when swapping to my winter wheels on my truck. 32 lugs takes forever without them.

I've also used an IR torque limited impact, which was equally great. Unlimited torque in reverse.
 

rlitman

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How tight can someone really tighten a lug nut without snapping the stud? We snapped a lug nut when I first got my Snap-On ct3850 and that puts out maybe 240 ft lbs.

It SHOULD take a lot of torque, but is within the reach of many impacts. I had a lug nut that decided to cross-thread itself after installed, and when it jammed up, I put the gun on it, and left it hammering. Eventually it started to spin and fell of the now completely thread-less and smoking stud without snapping.

If I snapped a stud, I'l take a close up picture of the break. Look for rust where an older crack started.
 
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