I got a post exposition air hammer recently, that was supposed to be working and unused. It is unused, but it just blows air instead of working and doesn't have this typical bubbly rattle when shaken air hammers have. I tried pumping it full of oil, WD 40 and similar products, in case there's some dried oil or hitting it with a rubber hammer to get things loose, but it didn't help. I finally managed to get it rattling and working for a few seconds by hitting the chisel repeatedly, but it got stuck again after a few seconds of running. Should I return it?
Unscrew barrel, dump out the guts, find out where and why the piston is sticking, unfuck that, clean it up and put it back together with more oil. They're stupid simple. Either the piston or the valve is stuck, or a spring is broken. I did have a needle scaler one time with a tight piston that I had to hit with a bit of emery cloth to get it to slide more smoothly.
>>2894702pneumatics and hydraulics are scary, i would not diy a repair.
>>2894705I wanted to avoid disassemblying it leaving marks as long as possible, in case something more serious is broken and I can't return it anymore, but it did work for a while, so fuck it
>>2894705>>2894711I hit an inserted chisel with a hammer again and it got unstuck again. I won't connect the air yet this time, but instead I'l try spraying more WD 40 into the barrell, maybe it will reach the valve and make a difference now that the piston got unstuck and rattles normally
>>2894708pneumatics are cool though. ever since I tried an air tool for the first time, I've been buying every type of them I come across, even though I usually have a corded or cordless equivalent, sometimes both. I ordered an air nibbler today just to check it out
Looks like it works. here's what I'd do now without wasting so much oil oild and WD 40, in case someone gets an air hammer that was collecting dust for too long and wants to try fixing it without unscrewing anything:when you notice it's stuck after oiling it normally and connecting the air, first try getting it warm by blowing a heat gun on the lowest setting into the barrell for a maybe half a minute, being careful to not getting it too hot and melting the rubber grip then spray some WD 40 into the barrell and insert a chisel. hit the chisel with a hammer until you can feel the piston rattling. spray some more WD 40 and shake the gun really hard. when it gets stuck, hit the chisel again and continue shaking. when it doesn't get stuck anymore when you shake it, leave it for half an hour of so, maybe add a bit more WD 40 before that. pour some oil into the barrel and connect the air
>>2894708>pneumatics and hydraulics are scary, i would not diy a repair.KEK.
>>2894720>WD 40>WD 40>WD 40Try putting some actual air tool oil into the air inlet.
>>2894702percussion air tools dont need as much oil as vane motor. too much will clog them up and they wont run. they also act like yours until theyve been run a few hours and the sliding parts get worn in
>>2894910it was the first thing I did. after that I was trying to disolve any previous dried oil
>>2894913>percussion air tools dont need as much oil as vane motor. too much will clog them up and they wont run.is it possible to remove the excess oil without taking it apart (while I can still return it)? it wasn't full of oil at first, if it was, it completely dried up as my hands were covered in black dust, something similar to sooth, when working on it at first, but I may have clogged it while cleaning it. I thought I fixed it, but it gets stuck after a while and I still have to lift up the chisel and smack it hard to unblock it
>>2895009id put a few drops of atf in it and run it then let it sit a day. the atf will dissolve any goo and its high detergent so the crap will be held in solution then blown out the exhaust an air chisel is about as simple as air tools get and probably just need run hard to wear the rough spots of changs barely in tolerance parts
>>2895011>id put a few drops of atf in it and run it then let it sit a day.This. I used to work for a shop that fixed demo hammers and jackhammers, I was the tech that worked on them. We had a cabinet that would run a mix of ATF and air through them to clean the crud out and lubricate them.As to OP, some air hammers will not cycle without a load. You need a tool in the hammer and it needs to be pressed against something to get it to cycle, otherwise it just deadheads. Don't just bounce it against the beehive spring unless you like chisels stuck in your walls.
>>2895041>As to OP, some air hammers will not cycle without a load. You need a tool in the hammer and it needs to be pressed against something to get it to cycle, otherwise it just deadheads. Don't just bounce it against the beehive spring unless you like chisels stuck in your walls.this one should run without a load, if I remember correctly (had the same model for a few days but returned it, because it was too beat down for the price) but I assemble the spring each time and check it pressed against a wall (I intend to remove all the plaster from it anyway, so it's fine) or even unblock it by punching said wall hard with the chisel manually. it runs for a burst or two now (it was just air before), but the piston gets stuck eventually
Dude, seriously just unscrew the barrel and clean it up. If the piston is getting stuck take some emery cloth to it to clean it up so it slides freely every time and doesn't get stuck. It's a god damn air hammer, not a spaceship. If you fuck it up you're out a whole 15 damn dollars.
>>2895070I will, I just want to exhaust all the options not involving unscrewing it first. I paid some more because it was a whole set with a matching scaler, chisels, etc and I fucked up a random orbit sander and a cleaning blow gun in the past when disassemblying them. maybe not exactly fucked up, but lost some small parts, like an air inlet mesh, had o'rings come apart and haven't bought the replacements yet etc. it wouldn't be a problem normally, but I'm doing renovations since forever and there's huge mess all around the house
Probably a dumb question, but are you feeding it enough air? Both in terms of pressure and from a line that can handle its volume needs? If I forget to adjust the regulator to a higher pressure some of my tools will just vent without doing anything.
>>2894708You're just ignorant so consider curing that ignorance with study then apply what you learn. That's how the good GET good. Understand theory of operation for all your tools and your life will go much easier.
>>2895132^This is a common error. OP should post its compressor specs or a pic. Noobs note ya can add all the compressors you can power and connect so if you have some cheapies (I collect broken consumer comps free or cheap to scatter them at point of use so I can reserve my industrial comps for blasting and not wait to fill my receiver tank) that's one way to get more air.For compressors in intermittent use an air tank near the tool can be added easily. I typically use a 1/4" NPT tee with one male air nipple and two chucks. Compressor feeds that and as desired I connect an air tank to the tee using a common air hose (nipple on one end, chuck on the other) joined by two nipples screwed into each other (usually one nipple with female thread and one with a male, but whatever is handy will do.) The more combinations one can make with pneumatic fittings the better. I plumbed my shop with rubber air hose and fittings hung off self-fabbed simple flat bar hooks so I can rearrange and modify everything easy. If I still rented that would let me move leaving nothing behind.
>>2895132yeah, I have another air hammer and it works fine. this hammer is even smaller. I have a 50L 2 piston 10 bar compressor, but I can use air hammers for short bursts even with my other battery powered 6l 8.3 bar compressor. they all usually require 6 bars/90PSI anyway
>>2895154>OP should post its compressor specs or a pic.I have this one: https://www.einhell.fr/en/p/4010495-tc-ac-420-50-10-v/10 bars max. the suction power is 420 l/min and the air supply is 150L/min at 7 bars or 200 at 4 bars
>>2894708pneumatic tool repairs are much easier to do yourself than repairing electric tools
