The gun wont shoot it tryes to but acts like it is low on air when it shoots the rod that hits the nail wont go back up it stayes down . the gun doesnot leek air. if you push the rod up manuly it will shoot 1 nail and the rod stays down. can you give me some advice thanks charles
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Re: porter cable roofing gun
The problem that you describe could be caused by three things. First remove the cylinder and look for a black rubber band around the cylinder about med section. There is an indention with holes where it is supposed to be. The band should fit snuggly so that it does not slip off during use. Secondly, check that the piston oring/plastic ring holds the piston in the cylinder without just dropping under its own weight. Third, the upper bumper could have a crack or missing piece. Remove it and check. (vinyl part in headvalve) Parts are available at dewalt repair center or www.toolpartsdirect.com. enjoy
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Try ez test to check for proper operation. Remove nails and air supply, point nose of gun up then down again. The driver should not move from the top of cylinder position. If driver is moving up then down replace the driver oring. If driver oring seems ok then connect air supply and bump fire the nailer without nails against soft wood and door open so that you can see the driver and feeder moving. Bump fire the gun and make sure that the driver is moving all the way back up to top of cylinder and the feeder is moving rapidly back and forward. If movement seems ok then hold the nose down on soft wood and depress and hold the trigger. This will fire the gun but driver will stay at the bottom position and not return until you release the trigger or lift the gun. When holding the gun with the driver down position, no air should leak out the top or bottom of the gun. If air leaks out bottom, replace lower bumper, if air leaks out the top replace the upper bumper. Good luck
The manual for your gun specifies 34-degree nails from 2 to 3 1/2 inches long. 28-degree, wire collated nails are a Stanley-Bostitch thing and they only work in their nail guns, they will not work in your nail gun. You need 34-degree, paper-tape collated nails. I know Senco framing nails will work in your gun and I think Duo-fast makes 34-drgree nails but check that before buying them.
If no air is leaking from gun, miss-fire is usually caused by worn or too tight piston oring or lack of lubrication. Easy test. Disconnect airline, remove nails, point nose of gun up then down. Driver should stay in uppermost position. If driver moves up then down within gun replace piston oring and retest. Set pressure to about 100psi. Good luck with repair.
Worn trigger valve orings will cause gun to fire twice, and /or attempting to single fire nail with bump-fire trigger. Easy test, look closely at firing pin under trigger. It should fit snuggly an not move from side to side in valve. If loose, replace valve. If your nailer has bump-fire trigger, do no attempt to place gun then fire one shot because the gun will most likely double fire. Good luck.
Try oiling the tool first. Remove the nails, squirt a decent amount of air tool oil in the stem where the air hose coupler connects, and fire the tool a dozen times or so. Then put in the nails and test. If it still hangs up then it will need the o-rings replaced.
Sounds Like it's time for a Rebuild. On the Other Hand the tool may not have a Steady regulated pressure setting?? After further research I came up with a Contact Number for You for Porter-Cable for Service Centers 888-848-5175, I'm sure They can Help You Troubleshoot this Nailer more In-depth... IF, You can't get any satisfaction with the Service Center you come up with, get back in touch with me, and give me an Area of the Country your In, and perhaps I can get you to a Better solution. I reviewed your Model Parts Schematic and seen Several Parts that could be the Culprits. But at this Point I strongly feel That Porter-Cable Service Center would be Your BEST alternative. Good Luck!!
Could be a couple things, first are you using the right nails in the gun e.g. collation and degree. Second do the nails move freely in the magazine and how is the pusher spring on the nail does it have enough pressure. Then I would unplug from air remove all the nails andjust tap the nose on a piece of wood and does the driver drop? If so the piston Oring is worn and needs replaced, but if you do that I would recommend replacing all the rubber. Let me know and I would need the exact model number to come up with parts.