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Re: jammed makita an923 nail gun
On most all nailguns when the trigger is activated air pressure is released from the headvalve causing the headvalve to open and fire the piston. If air leaks through the headvalve orings or through the headgasket port to headvalve, it will not fire. Try applying light grease to headvalve orings and make sure that headgasket is sealing around vent hole. If it fires then replace orings in headvalve for long term repair. Secondary problem is worn safety parts and trigger or trigger pin. If these parts are worn the trigger will not push the trigger valve pin all the way in when you bump fire the gun. With air supply disconnected, apply pressure to safety while depressing the trigger and check thet the pin is moving all the way into the trigger valve. Adjust or replace as necessary. Enjoy
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Usually nailers are built so that removing jammed nails is an anticipated activity.
make sure the air supply is disconnected from the nailer.
Press the safety against a piece of wood and pull the trigger. Nothing should happen but it's just one of my safety phobias.
Now you can have a really close look at the nailer mechanism.
Remove any nails that are still in the magazine.
Some nail guns have a cam or tab that will release the face of the nailing assembly.
Others have a plate secured with cap screws or little bolts. There is often an allen wrench provided with the gun just for the purpose of taking the plate off so that you can remove the jammed nails.
If all else fails, you could check with the place you rented or bought it from.
Patience, curiosity, and safety. Keeping tools working is an adventure!
On the front of the nose, where the two peices of the safety come together there is a hex head screw. Loosen that screw and the lower piece can be extended or retracted. The more the lower safety extends past the nose, the higher the nail will be left in the work. The shorter it is, the deeper the nail will be driven.
Most senconailers have an adjustment on the lower safety. Usually one or two screws allow foot to extend. Others framers have a thumb wheel on the side or under the trigger. If the adjustment is all the way out and the nail is still setting too deep, then fault may be with the lower bumper. If the bumper is breaking up, the driver will set the nail too deep. Remove head and pull the piston, if the bumper is missing pieces or cracked, replace. Good luck
the nose peice it either bent or dirty. if you over oil it this will make it dirty and jam. should have a spring arm that flips back and allows inspection of loading mechanisim. look for burs or binding parts, wire or nail heads are common. check piston tip too for malled end to. they are pretty simple to fix just look and c whats binding.
sounds like a bent shaft has the driver had any nail stuck or came out the side? whats the presser on?Are you nailing over exiting floor such as v.c.t or other hardwood floor try a couple drops oil in the nailer i' ve been doing floors for over 30 years these are some of the problems i came across hope its helps some what
Air hammers are ideal for some specific jobs of craftsmen. Since they do not require your hand to hold the nail stationary, they are safer than conventional hammers. In addition, since air hammers do not involve swinging, they are perfect for projects that require a great deal of nailing, such as installing drywall. This will help you save energy and complete your task more efficiently