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Old 03-30-2008, 12:42 PM
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Old Craftsman Impact Wrench

I have an ancient Craftsman Impact Wrench that I want to try to use. My dad was a mechanic who passed away in 1989 and this air tool has not been used since 1988. It is a model 756.18830 rated at 20-175 Ft-Lbs. I estimate that my dad probably had it for 20 years prior to his passing. Before I try to use it I want to lubricate it but haven't a clue as to how this is done. Attached are a couple of pics...................any advice besides lubrication before I try to crank it up?
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Old 03-30-2008, 12:53 PM
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Position it with the air connection pointing straight up and put some air tool oil in it. Let it sit for a few hours then add some more and put some air on it. Don't run it too much at first just blow some of the oil around in it then oil it again.
I don't know if they still offer it or not but you may be able to buy a rebuild kit for it, I have rebuilt small grinders before and extended the life of the tool.
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Old 03-30-2008, 01:40 PM
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Some impact wrenches also have a Allen screw on the side that is an oil port for something. Not sure if your has that though.
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Old 03-30-2008, 02:20 PM
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Quote:
Originally Posted by weirdbeard
Some impact wrenches also have a Allen screw on the side that is an oil port for something. Not sure if your has that though.
it does have an allen plug on the bottom of the handle.............
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Old 03-30-2008, 02:21 PM
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Quote:
Originally Posted by Jake_Dragon
Position it with the air connection pointing straight up and put some air tool oil in it. Let it sit for a few hours then add some more and put some air on it. Don't run it too much at first just blow some of the oil around in it then oil it again.
I don't know if they still offer it or not but you may be able to buy a rebuild kit for it, I have rebuilt small grinders before and extended the life of the tool.
how much is a little........10 drops?..............what if I put too much in?
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Old 03-30-2008, 02:24 PM
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And some impacts also have a small, spring-loaded check ball orifice, up near the anvil, where a special grease should be inserted occasionally. It's quite possible that this gun was made by one of the major air tool manufacturers too, which would increase your odds of finding parts for it, if or when they're needed.
I'm sure your father would appreciate your concern for a tool which no doubt served him well and made him a lot of money, too. I'm an older mechanic myself and have tools that belonged to my grandfather who was a master mechanic (among other skills) from the 1920s until he passed away in the mid 60s. I also have many other vintage tools, as well as tools I've owned and used for many or all of the over 35 years that I've been doing this stuff. It's probably silly, but there are just certain tools that feel right and that I prefer to use, in spite of their age. Whenever I move on to the next plane of existence, my kids and grandkids will probably wonder who in the hell would ever need so many tools (and other junk) as they're sorting through my personal treasures.
It's true, I'm a pack-rat who seldom gets rid of anything!

If you put too much oil in, it'll just blow out the excess during use. Nothing to worry about.
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Old 03-30-2008, 02:40 PM
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Notorius.............we are on the same page. I have all of my dad's hand tools from his work days...........I also have my own but when I have been stuck looking for a tool I look in my dad's chest and sure enough.......what I needed was there..............these tools, while well used and worn look like junk to most but are a cherished treasure to me. I have some of his air tools that have been in the basement and haven't had use for them until now so I would rather put some money and effort into reconditioning the tools my dad used, rather than to buy new. I watched my dad work on cars and the fact that I can use the same tools he used to work on cars of the day makes my dad smile.................my car is a '64 Tempest.............my dad worked for GM all his life.........and no doubt worked on one of these..........
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Old 03-30-2008, 02:51 PM
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Quote:
Originally Posted by Notorious
If you put too much oil in, it'll just blow out the excess during use. Nothing to worry about.
I would load it up then just blow out the extra. After that put 3 drops of oil in the first time you use it each day. 10 drops should be good enough to let it soak, then just blow it out. Wrap a shop rag around the bottom and you wont get it all over your hand.
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Old 03-30-2008, 02:57 PM
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air tools.......

Hi,as was mentioned in other posts,put the air hose connector pointed up,squeeze the trigger,go to NAPA and buy a bottle of air tool oil(it flows well) fill the tool up until it overflows,and wont take any more oil,let the trigger go,let it set overnite,do it again the next day,,wrap a rag around the air outlet,hook up the air and squeeze the trigger. should work ok, i oil my air tools about every 15 minutes when using,and again before i put them away. .
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Old 03-30-2008, 04:01 PM
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The biggest killer to air tools is moisture in the air supply. Always run a good filter and water separator. I know some who have an oiler installed on the air system but if you do any painting, you don't want one....
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Old 04-23-2008, 08:17 PM
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Quote:
Originally Posted by scotzz
I have an ancient Craftsman Impact Wrench that I want to try to use. My dad was a mechanic who passed away in 1989 and this air tool has not been used since 1988. It is a model 756.18830 rated at 20-175 Ft-Lbs. I estimate that my dad probably had it for 20 years prior to his passing. Before I try to use it I want to lubricate it but haven't a clue as to how this is done. Attached are a couple of pics...................any advice besides lubrication before I try to crank it up?


I know your post was a while ago, hope you see this post. I re-started cleaning up my Dad's tools again a couple of days ago. I have a Craftsman 756.18880 (yours is 756.18830). It was all seized up hard rust inside. Got it all apart, ready to clean it up. Hope I can get it back together, it's in pretty good shape for being outside for several years. Did you get yours fixed?
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