I purchased a second hand Snap-O9 PH3050B. I tried it at 90 psi, but it seemed to be striking really lightly. When I cranked up the pressure it got better, but it didn't have the power I expected. Any pointers?
Having no idea the condition you got it in I'll throw this out there. If it was used much and not oiled, especially if the air lines had a lot of water vapor it's possible there is a lot of gum and varnish built up. Try getting some PB Blaster or other penetrating oil, put a couple of shots into it (at the coupler plug) and hook up to air pressure and bump it a couple of times. Then let it sit. Come back next day and do that again. Add a little air tool oil or ATF as well. After a few days if it's gummed up it will be much less so and should have noticeably more power.
Cheapo's suggestion is spot on as well. Check that it's wide open. If it has a built in regulator (likely) then it very well could be set below maximum. It should hit pretty hard as it's got a lot of power.
I'll throw this out there for anyone interested. A good substitute for an air hammer is an aircraft rivet gun. A 3x, or 4x, or even 5X rivet gun has a lot of power and a teaser throttle that allows you to make just a single hit if wanted. It's way way way more controllable than an automotive impact hammer and has the same shank which will allow you to use all your accessories. (.401, bigger ones .498) I almost never use the impact hammer anymore as I love the aircraft rivet guns I have. Good quality ones are available at places like Aircraft Spruce and you can find hi-quality(USA) used ones on Ebay. A 3X or 4X would work well. 5X and larger hit
really hard.
