Repairing nail guns requires caution and disconnecting the power source. Common issues include jammed feed mechanisms and leaking o-rings. Pneumatic guns may need a seal kit. Malfunctions can be caused by overloading or misalignment, and checking the return spring and safety catch is important.
Nail guns use electric solenoids, pneumatic pistons, or combustion pistons to fire nails at speeds in excess of 200 miles per hour (321 km/h), so any attempt to repair these tools must involve great caution. Before attempting nail gun repair, it is important to disconnect the tool from its electrical or compressed air supply or remove the ignition source if it is a combustion unit. A common problem with nail guns is a jammed feed mechanism, which can sometimes be fixed by taking the tool apart and removing any excess nails that have become stuck. Air nail gun repair often involves a leaking o-ring, so if one of these tools isn’t working properly a seal kit is often needed. Electric nail gun repair can result in the solenoids failing, although in some cases the electrical connections can break and need to be soldered back together.
The first tip to keep in mind when attempting to repair your nail gun is to make sure the drive mechanism is not loaded or loaded. A jammed or non-firing nail gun can suddenly malfunction during examination, which can lead to injury if precautions are not taken. An electric nail gun should be unplugged or battery removed, and a pneumatic unit should be disconnected from its compressed air source. Combustion nail guns should also be disabled before disassembly, although the exact process can vary from tool to tool.
Many nail gun malfunctions lead to jamming of the tool, which can occur when too many nails are driven into the firing mechanism at once. This can often be fixed by opening the tool and removing the jammed nails. In some cases the firing pin may be misaligned, in which case it must be pushed back into place with a pair of pliers or other tool. If your nail gun continues to jam after doing this repair, there may be a problem with the loading mechanism. Other items to inspect include the return spring and any type of safety catch that may be obstructing the firing pin.
Pneumatic nail guns rely on compressed air to operate, so any leak inside a tool can stop it from working. If a pneumatic nail gun discharges air when you pull the trigger, a bad o-ring is a probable cause. These o-rings can be obtained separately, but it may also be a good idea to find a model-specific seal kit before attempting pneumatic nail gun repair. If a kit is available, it will have all the gaskets needed. Air tools can often benefit from a few drops of oil every now and then, although that may be insufficient to fix a nail gun that no longer fires.
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