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23 gauge nail guns jaming

3/28/16       
Jim

Looking for advice about 23 gauge nail guns jaming. I have a grex, cadex and a harbor freight. I use high quality nails, try to keep the air pressure down. Don't oil the guns (as recommended by the manufacture). I have them rebuilt by repair shops......the harbor freight I just turn in on warranty. But they only shoot short nails. I have spoken with the manufacturers for advice. That is where I received the advice I posted above.

It's always the same story. When new they work great, then slowly start jaming. Until they the frequency drives me crazy!

So looking for good advice.
Thanks Jim

3/28/16       #2: 23 gauge nail guns jaming ...
Jim

Should have mentioned that it is the nail being driven wrinkling up in the head .

3/29/16       #3: 23 gauge nail guns jaming ...
Snaglpuss

We have an older and a newer Porter Cable gun(s) and use Porter Cable pins.
Never have problems with jams and we've had the older one since it first came out.

3/29/16       #4: 23 gauge nail guns jaming ...
JimHerron

I've had 4 of the grex p630 for about 10 yrs in door department and install truck.
I can tell that they require more air pressure than any gun in the shop. My Makita install compressor really struggles to keep pace. I run about 125 psi.
Another thing that helps is regular oiling. I know the Grex require oil and in fact ship new with a small bottle of gun oil. I mostly use Marvel Mystery Oil as a go to pneumatic lubricant.
I think you'll see improvement with the above.

3/29/16       #5: 23 gauge nail guns jaming ...
Jim

JimHerron
I will give the oil a try. Oddly the manufacturers told me to not oil very often ...?
Thanks Jim

3/29/16       #6: 23 gauge nail guns jaming ...
jim herron

2-3 drops prior to use is all that's required.
I tried an inline auto oiler on one, and it was way over oiled.

4/7/16       #7: 23 gauge nail guns jaming ...
john Member

I have always had a problem with that. Except the hitachi one I bought. The porter cable, grex, and bostich ones I have had have always jammed up and eventually had to replace the piston driver on them. The pistons never have enough grease in them and dry up over time. It starts with misfiring, then nail jams, and then finally the hammer bends off and breaks. When I realized this, I took off the back plate, removed the piston, greased it, re-installed it and never had a problem with it again. I do this with all my guns now. Even framers. ereplacementparts.com has parts for these

4/7/16       #8: 23 gauge nail guns jaming ...
Jim

Thanks John!! Just the information I needed. I was having a love hate relationship with my 23 gauge guns.

So now, what is the very best grease to lube it with?

Thanks Jim

4/7/16       #9: 23 gauge nail guns jaming ...
john Member

im not that selective with grease. i just use whatever is the the shop grease gun. But it looks like ingersoll-rand makes some. Makes sense, they are a top compressor manufacturer.

4/11/16       #10: 23 gauge nail guns jaming ...
Jay Miller

Grex: Couple of drops oil each day. Get the rebuild kit every year or two (depends how hard you work them) use good pins, pointed the right way. Guns are beautiful. I have never had a brand of pinner that could go years (under heavy use) and shoot as good as the day I bought it without some kind of maintenance. Parts do wear, especially the driver head where it impacts the pin.

4/11/16       #11: 23 gauge nail guns jaming ...
Jim

Jay
Probably when I use them the hardest is when I put up 6" crown. Use lots of pins. My adhesive Chaulking is really what keeps evey thing in place.

5/27/16       #12: 23 gauge nail guns jaming ...
Jake

I find I need to crank up the pressure for 2" pins. You have to watch the cut in pressure on smaller portable compressors. If I need to drive more than a couple 2" pins into anything harder than drywall I bring one of my larger portable compressors.

I would also check the min/max pressure of shop air with a gauge at the gun. If the compressor cuts in at 95 PSI, with 100 feet of pipe/hose you could be looking at a lot less at the gun.

6/4/16       #13: 23 gauge nail guns jaming ...
door shop guy

Jay Miller...where do you get the Grex rebuild parts at? Do you just replace just the driver or do you go ahead and replace o rings and other parts too even if they are ok?


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