20 Most Recent Duo Fast DuoFast DF225C 502950 112 to 212Inch Siding Coil Nailer Questions & Answers

Did you ever fix your 3318?

probably dry piston seals put a few drops of machine oil in the air inlet connection to lubricate the seals or have the unit properly repaired and then use an oil injector in the air line if a high use machine

Sounds like the lower bumper is shot.

Time for cleaning and replace o-rings (beware on the gaskets if neccesary don't forget to order if needed and a good basic lubrication because its not an oilless tool the o-rings need a regular pneumolube oil without oil or too lean lubrication its working short time but important the o-rings above the cylinder in that valve above the cilinder or an o-ring is worn or used without oil and broken or gotten hard by the build up heat use always the special oil nebulizer because the heat dissipating properties are very important for using oil. The o-rings should all replaced and need by replace also another but a base lubrication sillicon grease or a good sillicon based sprays innotec sp200 or oks1110 grease and all o-ring parts before use from pos 6 - and with 20 Buy Duo Fast DF225C Coil Siding Nailer Nailer Parts

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Dont worry about oil coming out of the nailer. Just start using a little less oil every day untill it stops coming out (does not need much few drops). You could also just hang up the nailer with the air inlet point down so that the oil and water can run out over nite. I guess that too much oil is better than using it too dry except that oil gets on work. If you are adding lots of oil because it works better, then time for oring kit. Good luck

This series of nailers are the most difficult to repair. Your nailer has twice as many orings as the norm. Many have said that this nailer is over-engineered. There are three areas that could cause trigger area leak. To make it simple, lets do one area at a time. Use soapy water around the trigger area to find actual leak. If air is leaking from actual trigger valve (ms719-2) and its counterpart, the cartridge (ms719-1) then these two parts need to be removed. Check for scratches in the metal of the valve. If scratched try to remove with fine paper or replace as necessary. Most leaks are due to faulty trigger valve. If air is not leaking from actual trigger valve then remove the dump valve (mn120-5) at the back of the head of gun. There should be two small allen screws then metal lid, then spring and oring. Pull out dump valve and make sure all the orings are in order. This valve should be able to move, not too tight. Use silicone paste lube on all orings (available at Lowes in plumbing department, Danco brand used for faucet orings). Reinstall dump valve and related parts and check for leaks. If air seems to be leaking from bottom of gun neer trigger, most likely problem is cycle valve (mm419-1) and related vinyl seat. These two parts are in the valve housing under the trigger. This valve also moves within its housing and seats on a vinyl oring. This part could be clear vinyl or black rubber. New seats are clear. Inspect these parts for scratches/cuts and lube with silicone paste. Hopefully you would have solved the problem with trigger valve. Good luck with your repair and do not dispare, this is one of the most difficult guns.

Open your gun remove the nail close your gun.

Check for leaks https://www.google.com/search?q=SINC+Compressor+low+sump+pressure+error ..

how to solve the this alaram what is the reason getting this alaram ,how to fault finding

Not being sure about this model but do you have the air hose connected to the tire vent and does it meet the minimum requirements? This may be the only way that the compressor can know how much pressure is in the tire and to start counting.

I have not been able to purchase replacement parts for these nail guns , however, have repaired them using parts from Bostitch framers and or just make the part. If the seal fits over the top of the cylinder, then try using seal from Bostitch framer part #N70155 fits a bit tight but works. Heat with a hair dryer to soften and install. If the seat is incorporated within the head valve, just dig it out and replace it with liquid two part urethane. Just mix and pour it in. After cleaning out the old seal, place head valve on level surface and pour in the mixed urethane till slightly over full to give the seal a nice crown. The finish nailer might also be repaired using other brand of seals. Remove the old part and take it to service center for a possible match. Good luck with your repair.

Change of Pressure sensor. Or Recalibrating is required.