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Tool Talk Discussion Forum

Craftsman 3/8 air ratchet

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tim(ny)

06-17-2004 16:08:12




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I got one of these in a package deal with a compressor. Some deal, it seized up after I used it twice (I did oil it before use). And no, I checked, Sears doesn't replace these like hand tools. How do I get this thing apart to see what's jammed? Is there any place I can find an explosion diagram?




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Fred OH

06-17-2004 21:52:23




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 Re: Craftsman 3/8 air ratchet in reply to tim(ny), 06-17-2004 16:08:12  
My half inch el-cheapo did the same thing and I backed it off a quarter turn where it screws together in the middle and it's worked okay ever since. Fred OH



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Roger

06-17-2004 20:59:58




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 Re: Craftsman 3/8 air ratchet in reply to tim(ny), 06-17-2004 16:08:12  
Usually, new air tools require flushing before use, with a light oil like WD40 or even Varsol. After the tools are assembled, they are often packaged with an excess of oil in them, probably to prevent rusting while they are in transit from Taiwan. Vane blades can become stuck in their grooves with gummy oil, leaving no surface for the air pressure to work against to spin the motor. In this state, you will still have air rushing through the tool, but it will not spin. This does not preclude other problems like a failed bearing, as was mentioned, but it might be worth a shot (literally) to put some solvent or WD40 through it and spin it by hand first to get things broken free, then apply some air. If this doesn't work, then I'd start dismantling the thing. Air tools are not very complex, so don't be too worried about taking it apart.

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MAC,IL

06-17-2004 17:28:32




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 Re: Craftsman 3/8 air ratchet in reply to tim(ny), 06-17-2004 16:08:12  
I dont know off hand of any diagrams unless sears has one. Maybe the ratchet head is jammed. Those are easy to dis assemble. The cyl end should just unscrew. Hard telling who made this for them. Pkg deal items are usually of a low grade quality. If you use one a lot, You need to buy a quality 3/8 ratchet.



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Lee

06-17-2004 19:53:57




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 Re: Re: Craftsman 3/8 air ratchet in reply to MAC,IL, 06-17-2004 17:28:32  
Usually it is a lack of oil or lack of use that locks these to lock up. Put the alumiun handle part in a vise vertically, just dont crush it. Take a large wrench or carefully use a pipe wrench unscrew the black section from the bright handle, removr the planatary gears. then connect it to the air. put a rag over the bright end or put rags in a bucket and turn the air on. The insides should come out - fast. You will probably find the ball bearings stuck..They are stadard from a bearing supplyer oil everything and put it back together. After using oil it with a small shot of air to distubite the oil. When you found it stuck, I'll bet it had been a while since you used it

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