Craftsman 1/2" Impact Wrench Logo
Arthur Taylor Posted on Dec 29, 2011

Craftman impact wrench 1/2 inch model number 756188900

Need throttle valve pin and throttle valve can not need something that is compatable to fix it

1 Answer

Jay E

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  • Contributor 30 Answers
  • Posted on Jun 05, 2012
Jay E
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I found these posts when looking for a repair kit or parts for my Sears 756 CP. Appears I need the fastest moving most common to fail NLA part. Had this gun since new. Used for years in the shop then put it in the bottom of the tool box when the valve went out years ago.

In a clean up round I pulled it out to make the decision fix or recycle. One of those not wanting to throw out a perfectly good impact I started looking for parts. I did order a valve from a 744 and will be trying it. Since the shaft is shorter I was going to use the shaft from the 756 and cut it to make up the difference. Do not know yet if this will work.

In the mean time I started looking through one of the spare hardware drawers and came across a oil metering valve seat from a rotary engine. It fits rather snugly on the actuator shaft from the 756 and with a washer works. It is basically a jet encased in rubber.

This 756 is back up and impacting well. So if any one is still looking for the throttle valve for your 756 I can provide you with something that will work. Do not know what the life expectancy will be though. Since this will not be the everyday gun should last for a while.

Mazda part numbers that should work N236-14-633A - N326-14-633

  • Anonymous Aug 15, 2012

    Was wondering if you could supply any more info, I ordered the N326-14-633 from Mazda online ($21.53) and I just got a metal jet (not encased in rubber). Was wondering if anyone had any luck with this? Also the jet is not drilled all the way thru, so it does slide on the shaft.

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5 Related Answers

ren1221

  • 194 Answers
  • Posted on Jan 30, 2010

SOURCE: ingersoll rand 231A

if you have already used air tool oil you may have to take it apart and clean the motor vanes

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Anonymous

  • 172 Answers
  • Posted on Nov 17, 2009

SOURCE: Craftsman 1/2 inch impact wrench,not working

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 ...

Anonymous

  • 5 Answers
  • Posted on Apr 25, 2009

SOURCE: Impact wrench never stops spinning!

you have a bad o-ring at the air inlet

Anonymous

  • 2 Answers
  • Posted on Jun 20, 2010

SOURCE: Dont know where to put oil in Craftsman 1/2 " Impact wrench

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)

HansPP

Hans Pearson

  • 2510 Answers
  • Posted on Jan 27, 2011

SOURCE: I have a husky impact wrench, set at 100psi, but

There should be an air control valve adjacent to the air inlet, is it opened sufficiently. Failing that there is a problem with the drive motor. It could be seized bearing or a broken vane. There is nothing you can really be doing wrong, it is a very straightforward tool.

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Related Questions:

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On. CP776 impact wrench I have removed the roll pin to acess the throttle valve seal. What would be the correct method to remove these air inlet side parts after the roll pin has bern removed?

try this parts blowup and see if it give you any ideas? i see one roll pin and it is holding in the air inlet guts to the impact gun. i do not see a pin holding the actual trigger assy. item 43 may be the part holding in the trigger and what your describing is you removed the air inlet valve pin. if that is the case then you have to pull the valve out with pin pliers/needle nose/bird bill pliers. here is the link to the parts blowup for you good luck. Chicago Pneumatic CP776 T024621 3 4 34 Impact Wrench Parts
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Sounds like a problem with the throttle valve.
you will have to remove the air inlet (item# E) then pull the spring out (item# 37) and look to see if you find any foreign objects, if not the proceed to pull the throttle valve (pin cover) (item# 37) and check the seal (item# 34) for wear.
Follow this link for the parts manual:
http://pdf.lowes.com/useandcareguides/879686002796_use.pdf
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Won't stop turning

A very common fault on this model is the throttle valve seal (item# 28) wear out or falls apart.
First verify that the trigger is not binding.
Second look inside the inlet bushing (item# 49) and see if the screen (item# 51) is in place, if missing debris from the air line can cause the throttle valve (item# 29) not to fully close.
For removal you will have to punch out (item# 50) spring pin, then the inlet bushing (item# 49) will slide out and the other parts will follow.
Follow this link to view the parts list:
http://powertoolrepairohio.com/pages.php?pageid=14&breakid=500
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Product - Campbell Hausfeld TL1017 Butterfly Impact wrench I need a set of plastic valves. Where can these be purchased?

1-800-444-3353. This number is in the manual should you need some technical advice. I'd give them a call and see if they will mail you what you need. Can't find you a rebuild kit out on the net.
0helpful
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I have a ingersoll rand 231c 1/2 impact wrench that is almost brand new, have had no problems with daily use until today when the trigger will not move.

The IR231c is equipped with a throttle valve stem (item # 9) that is prone to oxidation and causes a stuck trigger condition. Remove the air strainer assembly (item # 10), followed by the spring (item # 8) then the throttle valve (item # 6) you will see the throttle valve stem (item # 9) spray some penetrating lube, if severely stuck it may be necessary to remove the trigger and pushing the throttle valve stem from the top.
Follow this link to see the parts diagram.

http://manualarchive.ingersollrandproducts.com/ir_pdfs/Tools/Impact%20Tools/Air%20Impactools/04584546_ed3.pdf
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Ingersoll rand impact gun 232TGSL street leagal gun runs in either direction wothout using trigger

YOU MIGHT HAVE A PROBLEM WITH THE THROTTLE VALVE SEAL ITEM #3 (O-RING) OR A STUCK THROTTLE VALVE PLUNGER ITEM# 5. TO ACCESS THESE PARTS YOU WILL NEED TO REMOVE THE INLET BUSHING ITEM# 6.

FOLLOW THIS LINK TO VIEW THE PARTS SCHEMATIC.
Part Listing Order Page
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My pt501 Porter Cable air impact wrench won't turn off

Your throttle valve seal is bad or your trigger pin is stuck. Go to ereplacementparts.com and type in your model# this will give you a detail of the parts broken down.
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Gun just goes off when air hose is hooked up. Its like im pushing the trigger at all times.

This is a common problem for models 236, 231HA. The throttle valve seat wears and causes are to bypass through the throttle valve.
Follow the link, look at item # 6 p/n 131-303 throttle valve seat.
You will need a hooked tool to extract the valve seat from the housing.
0helpful
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Detent worn out?

im sorry they dont make replacement for wrenches that i know of just try to jam it with something to hold it in right direction until you can buy another wrench somewhere you may want to try ebay see if someone is selling the wrench or the part hope this helps
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