Any tips before i start pulling this down?
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Evolved Member
Joined: Aug 2014
Posts: 1,389
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From: Australia
Those ratings are usually very optimistic and taken at high pressure. Are you able to turn up the air to like 120 or 150 PSI? If not, you may just want to take it to a shop and have them gun it off.
With that said, I've broken these loose with very beefy electric impacts, although it'll vary a bit engine from engine.
With that said, I've broken these loose with very beefy electric impacts, although it'll vary a bit engine from engine.
Evolved Member
Joined: Jun 2006
Posts: 6,902
Likes: 151
From: Grand Island, NE
I had the same problem at my last timing belt job. This was a bolt I had installed with the same air impact that now wouldn't remove it. An Ingersoll Rand crank bolt socket zipped it right off.
Crank up the regulator. Watch the gauge drop when you pull the trigger I bet youre only seeing something like 60# at the gun. Just crank up the pressure youre not going to hurt the gun. It should pop right off.
Agreed with the above. If you don't have a high pressure (150+ psi) air source with at least a 5+ gallon tank, then a beefy electric impact will do the trick. I've never met a bolt that has not come off using this impact. Picked it up last year and never looked back. Max break away is actually 1200 ft/lbs.
My compressor runs at 130psi. I crank it all the way up to remove crank bolts and axle nuts. I otherwise run the gun at 90psi, just to be on the safe side (harbor freight Earthquake = questionable quality 
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Agreed have that as well and it is awesome.