Question about Ingersoll Rand 3/4" Super Duty Extended Anvil Air Impact Wrench

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IR 261 air wrench vanes sticking

I use IR 261 guns. We tighten 1000 1/2" bolts a day per gun. I cannot keep a gun running for more than a few days before the vanes stick into the rotor and you can't get the gun to start. It just puffs air. I'm running 100-120 psi, filter, oiler. I have put in new vanes, have run them dry, wet, very wet, and have tried every combination possible. We even buy new guns that only last a few weeks before they start doing the same thing. I have also had the same problem with 271 guns. I'm at my wits end!

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  • joebob101 Feb 26, 2009

    Thanks for your suggestions. I'm going to try them. I do have clean air (filter/drier) and an in-line mister. I changed the air pressure to 90 psi per factory reccomendations. The comment you made about the vanes absorbing oil was interesting. When I have the problem, a few vanes always seem a little tight in the rotor. I use limited oil, but ususally am pretty liberal with the oil during assembly. I might be getting oil absorbtion problems on those fiber vanes. I found a place yesterday that makes polycarbonate vanes and have ordered some of them to try. I'm using this big gun because it drives the nuts much faster than a 1/2" wrench. We have it suspended from the ceiling with a tool balancer so the weight isn't a factor.

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  • 32 Answers

NOT exactly a solution, but may help you with your problem: I'm also a Owner of a 261 ( In fact 90% 0f all my Air Tools are IR) that I used everyday when I was working on Terex Equipment & EMD Locomotives. I "Upgraded" the Major Parts inside my Gun to the "Industrial Line" rather than the Automotive Parts since the 261 is classified as a Automotive Tool..and Installing an Adjustable Regulator on the Gun Helped a Lot too...by "tweeking" my Gun out, I was Pumping almost as much torque as some of the 1" Guns...
FYI: Don't Over Oil as the Oil will absorb into the Vanes, causing them to Expand in thickness "Permanently"...just 2-3 drops of a Hi-Grade Air Tool Oil before starting the Day is enough...sounds to me like your Picking up some contamination someplace??

Posted on Feb 21, 2009

  • Rick Wymer
    Rick Wymer Feb 26, 2009

    Follow-Up:
    I checked with my Local Authorized IR Repair Center about your Problem. We both agreed that you should install new Vanes(make sure to Wash Out the Parts with Hi-Grade Clean Solvent & Air-Dry), making sure the work area is completely Dust free when you put it back together. Just 2-3 "Drops" of a Hi-Grade Air Tool Lube every 2-3 Hours of Use is Plenty, But a Compressor In-Line Mister is a Superior remedy to adding Lube.
    You didn't say "IF" your Compressor(Main-Line) has a Oil/Lube Mister In-Line??
    Are you getting Condensation in Your Main Supply Line, may want to add a Air Dryer if Not.
    "Auto-Drain" on your Compressor?? I run Auto-Drains on the Compressor Main Drain & on my Main Regulator.
    At the End of a Day of Use:
    I Like to Add a Couple of Drops of Lube, and Run the Gun in Forward and Reverse a Few times (No-Load), before putting it away....
    Hope this Helps You!
    If your ONLY doing 1/2" Bolts(?) won't a 244 work for You, 261 seems a Little Heavy Duty for that


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