Brad nailer won't shoot, just vent air from trigger area when the trigger is pulled. Replaced trigger, disassembled & cleaned piston, cylinder, stopper cushion, all o-rings and gaskets look good. Any Ideas?
When was the last time you oiled the gun?
SOURCE: My brad nailer will not shoot any nails. When I
it sounds like the piston/driver might be stuck or the firing valve is malfunctioning. there are 4 screws to remove the top cap and you can see if the driver is damaged. Also before removing check to make sure there is not a nail jammed in the nose assembly. This tool is good for breaking the pin on the piston.
SOURCE: air allways and continually leaks forcably from the top. Bostitch
This nailgun has several parts to the headvalve that must fit together properly to seal. Go to WWW.toolpartsdirect.com for a diagram of this tool. The part called the diaphragm is source of problem. It has thin vinyl walls that will fold over when you assemble. The piston will not cause the gun to leak, just make sure that piston fits snug into the cylinder. Loose oring on piston will only cause low power or the poston may not retract all the way back up. Some piston/drivers had a plastic ring instead of an oring. The plastic ring had a secondary oring under, however not necessary. You can use rubber or plastic, just make sure that the piston is not too tight or too loose. The piston oring is the only oring in the gun that can be cut to fit. It is like a piston in a car engine. The piston rings have a gap.
SOURCE: 18 ga. Bostitch nailer that has a small brad jammed in it.
check your hex wrenches they could be standard when they need to be metric.
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