Question about Chicago Pneumatic 1/2" Air Impact Wrench

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Looking for a rebuild kit for a CP 742 Chiacago Pneumatic air wrench

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Posted on Nov 28, 2014

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Posted on Jan 02, 2017

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SOURCE: I need to find a rebuild kit

http://parts4tools.com/store/page6.html

Posted on Apr 02, 2009

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SOURCE: My CP 734 has no power under load. Is there a

there is a rebuild kit available anywhere they are sold, biggest reason for power loss is the vanes are either worn or sticking, if the hammer is greasable take it apart and check for wear, some a grease and some are oil bath, replace the screens in the trigger and insure all is clean, use a good air tool oil as it wont thicken

Posted on Dec 05, 2009

pappapumpdaf
  • 635 Answers

SOURCE: worn drive on my CP half-inch impact

That impact is distributed by Harbor Freight, though I doubt it is 25 years old. They may have a rebuild kit there, but a new one just like it is around $35.

This one:
d8e2205.gif
is priced at $24.99

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=95310

Posted on Mar 25, 2010

  • 1 Answer

SOURCE: My CP 734 has no power under load. Is there a

I used to repair these impacts for a living. Simplest first thing to do is back off the three 1/8" set screws in the back a couple turns. Pour a little varsol into the air inlet and plug it in. run the gun until your hand is black, (wear a glove). Once the varsol stops disconnect the air, add a few drops of air tool oil and tighten the screws slowly and evenly. You will hear the impact rpm increase. If your gun doesn't speed up to it's original scream you will have to remove the four 5/32" set screws and see what's worn. To open it hold the impact by the nose 3" off the table and position a center punch in the hole of the anvil shank with the same hand and hit it with a hammer hard enough to overtake the spring. The guts should drop on to the table in tact. The guts are in twp parts, the hammering mechanism, and the air motor. The three 1/8" screws hold the motor together. You will soon see the problem. Take the back off the air motor and it will show your if the veins are worn. Cjeck the end plates for wear. You can turn the end plates down on a lathe if available. As a rule of thumb, if the anvil shank is dry buy a repair kit, if it's wet, buy a tune-up kit. If the ring on the anvil shank doesn't turn, buy a repair kit and change your sockets. When rebuilding these front seal often leaks. These impacts are supposed to use 30 weight oil, but a mix of Ingersol Rand grease and 30 weight oil, ( just till it's slightly runny) will stay much longer. Assembling the anvil assembly can be tricky until you figure out how to hold the shank and two pins with the same hand. Good luck.

Posted on Sep 16, 2011

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1 Answer

Air veins for impact wrench


You can follow this link for C.P. parts.
Just look up your model, good luck! Search by Parts Breakdown

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1 Answer

Where can i buy "block ca141848" for cp air wrench 734


You can try ereplacenmentparts.com
Follow this link and they a picture of the parts that you are looking for! Block CA141848 for Craftsman Power Tool eReplacement Parts
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Exploded gun diagram


you can go to CP.com, ereplacementparts.com, powertoolrepairohio.com.
note CP.com will only have parts list for current tools, the other websites will have lists for older tools.

Feb 20, 2014 | Chicago Pneumatic 1/2" Air Impact Wrench

1 Answer

CP 734 Trigger Broken


If you are still looking for this part I would call power tool repair at 330-630-0022 and order that part number. From the breakdown it seems you have the correct part number

Jul 24, 2012 | Chicago Pneumatic 1/2" Air Impact Wrench

1 Answer

Manual for chicago air impact 1/2 or other.


If you have a newer of current tool you can go to CP.COM.
If it's an older tool try this link:
Chicago Pneumatic Service Repair Parts OEM Pro Am Tools

Mar 10, 2011 | Chicago Pneumatic 1/2" Air Impact Wrench

1 Answer

Worn drive on my CP half-inch impact


That impact is distributed by Harbor Freight, though I doubt it is 25 years old. They may have a rebuild kit there, but a new one just like it is around $35.

This one:
d8e2205.gif
is priced at $24.99

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=95310

Mar 25, 2010 | Chicago Pneumatic 1/2" Air Impact Wrench

1 Answer

My 772h is running low power i pulled it apart and everything looks great a few light scatches in rear cyl .can i just polish it 320 grit or ??


you need a new rebuild kit with O rings and gaskets,take gun completely apart and make sure you get new air vanes too,the scratches dont make that much difference,but old seals will rob power from gun

Jan 11, 2010 | Chicago Pneumatic CP772H - 6 3/4" Heavy...

2 Answers

I need to find parts for my old Chicago Pneumatic impact wrench


You may be able to find your parts online but you will probably pay a lot more than you need to. Your best bet is to call or go to a service center that deals with CP. There are 3 different anvils for that particular model so you will have to get the right part number. You can get information by emailing or calling CP for the nearest service center to you.

Mar 26, 2009 | Chicago Pneumatic CP7750 1/2" Air Impact...

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