Question about Craftsman 1/2" Impact Wrench

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I just bought a craftsman 1/2" impact wrench and connected it to my big 11 cfs dual tank compressor - but it will not take the lug nuts off my GMC Yukon. Whats likely the problem?

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  • 194 Answers

It needs to be taken apart and cleaned then lube it with air tool oil and reassemble it should make a big difference

Posted on Dec 12, 2009

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Hard to remove tire lug nuts made easy


Did you ever have to remove a tire on your car or someone elses and the wheel lugs were too tight?
Ok I have a "proven simple solution".
Keep available a deep socket 1/2" drive impact wrench quality for both 3/4" lug nuts and 13/16" lug nuts and a small 2-4 lb. hammer.
Put the socket on the tight lug, strike it with the hammer dead on, remove it with your lug wrench, if that doesnt work, apply WD 40, use a 1/2 breaker bar and slide a 2 foot pipe over the handle of the breaker bar, lean your body weight on the breaker bar/pipe and walla it will come off.

on Jun 06, 2010 | GMC Blazer Cars & Trucks

4 Answers

I just bought a craftsman pneumatic 1/2-in drive impact wrench. And used it with my craftsman 4-gallon 1hp air compressor tried to loosen the bolts on my car wheel wouldn't loosen them help


Pneumatic tools are rated in cfm (cubic feet per minute). Your 1 HP air compressor is rated at probably not more than 3 cfm while the 1/2 " impact driver needs at least 8 cfm, maybe 12 chm of air.
The compressor must provide more chm than tool rating needs.
It is a problem, by the time you look at five horse power air compressors and larger, a lot of electric power is needed. A circuit of 220 volts, 20, 30, or more amps would be required to run those large expensive compressors.
If you can, return the air tool and get a good electric tool instead.
Leave those high air volume air tools to shops that are so equipped to use, or invest if you must.

Jul 24, 2017 | Craftsman Air Tools & Compressors

1 Answer

Will a 3/8 in drive breaker bar take off a car lug nut?


If the lug nuts are as tight as you say I don't think a 3/8 drive will work. I even ruined a half inch drive by putting a pipe on it. Sears did replace it because it was Craftsman make. Are you near a Canadian Tire store as they usually have Master craft make which is life time guarantee as well.

Nov 04, 2015 | Cars & Trucks

1 Answer

I have an old craftsman impact gun model number 875-188992. what size compressor do I need for taking off lug nuts/automotive work?


The two most important specs are CFM at 90 psi (that's how fast the compressor can compress more air when the tank starts to run low) and how big the tank is. Virtually any compressor that has a top pressure rating 20 psi higher than you need for your tool (which is usually about 90 psi) and that has a tank of a couple of gallons will work. But the smaller the tank, the shorter time you can operate the tool before the compressor has to kick in. And the lower the CFM at 90, the longer you will have to wait for the tank to come up to pressure again so you can operate the tool at full pressure. If this is for occasional use and you aren't in a hurry, you don't need much of a compressor at all. If you want to operate continuously, then you should get something with a CFM at 90 psi that is higher than your tool's CFM consumption. Keep in mind that impact wrenches don't operate continuously like paint sprayers do. Good luck. Vote if you found this helpful. Al K

Jun 07, 2011 | Air Tools & Compressors

1 Answer

My brother passed away and i was left his tools. I have a Craftsman Model 875-71229 Air Impact Wrench, but no manual. I do use tools, but as I'm not a mechanic, I was thinking its probably of no use to me,...


The Chicago Pneumatic air wrench is not the same as the Craftsman, but it's a good brand.
Probably you could sell it if you have no use for it yourself. The impact wrench would have been used to remove lug nuts or other fasteners on an automobile, most likely.

Good luck on deciding what to do with the items.

Dec 06, 2010 | Craftsman Tools 1/2" Air Impact Wrench...

1 Answer

I have a IR 2130 Impactool 1/2 in drive I just got it used it seems to work ok but the torque seems to low I can hold it with my hand and it will not turn or take the lug nuts off the car is the torque...


This gun shouldnt have an adjustment. If you cfm's from your compressor are enough. Too low cfm's mean lower torque. If cfm is high enough for the gun rating then I would say the gun is bad.

Nov 13, 2010 | Ingersoll Rand - Rand 1/2" Impact Wrench,...

1 Answer

I just bought a 1/2 '' craftsman impact wrench and wanted to know what size air compressor is needed to run it properly?


If you plan on using it frequently and for extended amounts of time, you'll want a large one. If it's just for occasional use, a smaller pancake one will probably do, just make sure it has the pressure capability required for the impact wrench.

Dec 11, 2009 | Air Tools & Compressors

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