20 Most Recent Tradesman 8480K 38Inch to 114Inch 2in1 StaplerBrad Nailer with 5000 Questions & Answers

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Brad Nailer Parts

Replace the O rings... sounds like its one in the firing valve ( rear cap of the gun behind the cylinder )

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.

Many air compressors use a mineral blend or a synthetic oil, such as synthetic hydrocarbon, polyol ester or polyglycol. It is important to use a lubricant specifically rated for air compressors; do not use a general-purpose motor oil used for automotive or other purposes. Read your user manual for more information.