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, but, i wanted to look at a manual. Maybe I can use it, or maybe I should just sell it. I also was left a Chicago pneumatic air wrench, is it the same thing? and yes, girl talking here. Thanks if you can help.

Follow this link to the parts list:
http://www.searspartsdirect.com/partsdirect/part-model/Craftsman-Parts/Craftsman-Parts/Model-875185820/0247/0755200/00062232/00001?blt=06&prst=0&shdMod=875185820

If you are just oiling the gun,hold it upside down and squirt some oil ine the air chuck fitting.(I just use an empty bottle of my wife's hair dye filled with ATF-it's cheaper than a can of "air tool oil".If you are referring to the grease fitting for the impact mechanism,look for a small hole with a captured metal ball.The only tool I found to fill this is a specially designed miniature grease gun(got mine at Sears).

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

Just put 3-5 drops of air tool oil down the air inlet coupler and then run the gun for 5 seconds. Do this everyday that you run the gun for best results.

the vanes ore wore out

Make sure the expansion ring is on the end of the impact gun. this holds the sockets in place.

I just bought one of these also. Manual says oil goes into "the air inlet" which I'm thinking is where you attach the hose. That way the oil is sprayed throughout the interior of the gun once you run air through it.
Question for you: I can't get an impact socket onto this gun, almost seems like the square hole is too small. (yes, both are 1/2" drive). How do you get a socket on this stupid thing?
(man that sounds like I'm an idiot, but I've spent a half hour leaning all my body wight, wiggling, etc. and can't get a damn socket on)

If your local Sears store can't help you, try looking to see if you have a Snap-On, Corn-well, or Matco tool distributor in your area. Many air tools are manufactured by companies who make tools for different distributors. I work in a shop, and have found that many of the tool trucks have parts that'll work on other brands of tools besides their own.

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

Make sure you have at least 90 pounds of air and if you do you need to oil the wrench air tool oil pour some in the where the air line hooks up ..air tools need to be oiled daily cause compressed air cause water vapors to build up when you use it and then when it sits it begins to rust a bit and the oil stops this ...