Question about Ingersoll Rand 236 1/2" Air Impact Wrench

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Gun just goes off when air hose is hooked up. Its like im pushing the trigger at all times.

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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.

Posted on Aug 23, 2014

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Posted on Jan 02, 2017

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1 Answer

Keeps repeating itself


Most nailers have a two position setting on the trigger to allow for single fire or bump fire. If set on bump fire, the gun will work better when you bump fire the gun instead of placing the gun on the work then depress trigger. Bump fire works best when safety spring has good tension. Easy test. Make sure that the safety spring is in place (with air hose removed, contact foot should spring back quickly when pushed against work). With air connected, hold trigger and quickly bounce the gun against the work. If the gun does not fire when you bump, the trigger is most likely set to single fire. With trigger set to single fire, you must place the gun against the work, then depress trigger. If the gun shoots two nails while set to single fire, most likely worn trigger or worn out trigger valve. These parts are not expensive and are easy to replace. Good luck

Apr 12, 2013 | Dewalt D51321 3/4" 1 3/4" Heavy Duty Coil...

1 Answer

My new porter cable RN175B nail gun won't discharge a nail


If the trigger is set to single fire, you will need to place the gun against the work then pull trigger as you have done. Try setting the trigger to bump fire and try again. If hear a thump inside the gun, remove the head and check that the head valve in not stuck from lack of lubrication. Easy test, remove the nails, remove trigger pin, remove trigger and manually push trigger firing valve. If the gun fires then suspect faulty trigger or safety arm not lifting enought to activate the trigger valve. Good luck

Nov 21, 2012 | Air Tools & Compressors

1 Answer

NEW BRAD NAILER ONCE LOADED WILL NOT WORK


Many modern brad and finish nails use a sequential fire trigger system. You have to push the nose of the tool down to depress the safety THEN pull the trigger. This is the opposite of how a bottom fire works where you hold the trigger and bump the nose to fire the gun.

Mar 02, 2012 | Air Tools & Compressors

1 Answer

When using n60 nailer, one nail goes all the way in, but the next nail only goes halfway in and the some don't go in at all. Don't know what's wrong.


Worn orings in gun and the trigger valve can/will cause problems as you describe. Remove the nails and leave open the latch. Lighty tap the nose of the gun against coiled rubber hose. The driver/piston should stay in the top position (if the driver is down or comes down after test, replace driver oring). Now push the nose against the rubber hose and activate/hold trigger, while holding the trigger/gun in this position, the driver will /should stay down under pressure. At this point no air should leak out of the nose of the gun. If air leaks out of the nose, examine the lower bumper for cracks ( replace as needed ). Finally remove the trigger and examine the firing valve pin. If it has a plastic pin, looks worn and wobbles from side to side, most likely needs to be replaced. If however it has a metal pin and it seems to fit snugly, do not change unless it is leaking air. Good luck

Jun 19, 2011 | Stanley Bostitch Air Nailer Trigger N60...

1 Answer

Bostitch RN46 will not fire nail, only releases air when trigger is held and firing tip is touched to surface of material. Any ideas on what is wrong?


Gun will not fire if air is leaking past orings in head /headvalve or safety /trigger is not pushing trigger pin all the way into trigger valve. Test: Remove trigger to expose trigger valve pin. Remove nails. Place nose of gun against thick rubber mat or coiled rubber hose to absorb blow of driver. Very quickly and deliberately press trigger pin all the way in. If gun fires, safety foo or trigger is not pushing trigger pin all the way in. Make adjustments or replace worn parts. If gun still does not fire, remove head and pull out headvalve. Apply lots of silicone paste lube on the orings and the surface of the head where orings make contact. Reinstall head and test as above. If the gun fires then orings were leaking. Replace orings and sand any scratches on body of cap with very fine sand paper. Parts are at www.toolpartsdirect.com Good luck

Mar 06, 2011 | Stanley Factory Reconditioned Bostitch...

1 Answer

When hose is hooked up, driver goes down and air continually blows thru nail gun, out the top


could be a problem with the trigger valve assembly or the firing valve. I would check the trigger valve assembly first for sticking not allowing the air to release and retract the driver.

Feb 20, 2011 | Tools & Hardware - Others

1 Answer

I installed a new grease cartridge in my grease gun and grease does not come out when triggered.


If the gun was working properly before you changed the cartridge, The gun is air-locked
Two things: 1. Make sure the bottom rod is pushed in. 2. Holding the gun by the handle on the top left of the gun, below the hose there is a little metal valve. Push that vent valve down and pull the trigger repeatedly until grease starts to come out.
If that doesn't work. Remove the grease hose, hold the vent valve down, pull the trigger a few times. Then release the valve and pull the trigger until grease comes out. Replace the hose.
And if that doesn't work. Sometimes when you put in a new cartridge the metal "washer" that actually pushes the grease up the cylinder will get caught at the bottom of the new cartridge. Make sure the washer will move freely into the cartridge.
That should do it!

Jan 14, 2011 | Lincoln Automotive Pneumatic Grease Gun...

2 Answers

Nail gun will not shoot and air is exhausting out top vent all the time.


We used nail guns for years. I still own 6 guns, but they aren't used much anymore.
You have a 'blown head gasket.'
Or there is debris from the air hose that got lodged into the gun.
There is a head gasket and a trigger gasket.
Both can blow out any time from use, lack of oil, or they can stick open from debris.
You can take apart the head and clean it up and add oil to see if that solves problem.
You can order a gun re-build kit for your model and put in the parts yourself.
You can have a nail gun repair shop do the job.

Nail guns require gun oil.
If you don't use gun for a while, oil should be put into air hose opening and then left to run down into gun. More oil is better.
If you use 3-in-1 oil or some oil besides gun oil, then it will corrode the gaskets.
When storing air hose and guns, put tape over openings so they stay clean.
Before hooking air hose to a gun, you can also put a blower on hose and blow out the line first

Oct 21, 2010 | Garden

1 Answer

I bought a Harbor Freight 34 degree Nail Gun, model 93099. I shot about two clips of nails, but now when I press the trigger, I get a blast of air. I removed the safety trigger and (carefully) pushed in...


if its oiled, then take all the nails out of the track and chamber, check to see if your firing valve is stuck( it is suppose to go up and down , opening and closeing the cylinder, but sometimes it gets stuck) first press the safety in all the way ( you may have to pull the feeder down ) then press the trigger , then hook the hose to the gun in that order this will sometimes unstick the firing valve

Feb 04, 2010 | Air Tools & Compressors

2 Answers

Air leaks arond trigger when depressed, but no nail fires.


Where does the air leak out from? If it leaks from the trigger DeWalt makes a trigger valve assembly part # 641006-00 list 8.89 BUT if it leaks from other areas we have to look into it deeper. If it is just the trigger valve let me know and I will give you instructions how to remove and install the new one.

Feb 05, 2009 | Dewalt Round Head Framing Nailer D51845

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