180461 Bumper - Bostitch

This genuine OEM bumper in your nailer absorbs the impact and provides cushioning when the piston retracts after driving a nail. It is seated at the bottom of the nail gun cylinder. Due to the repeated stress it undergoes during operation, the bumper wears out gradually. Signs that suggest the need for bumper replacement include unusual noises, reduced driving power, misfires, or visible damage to the bumper. To replace a worn-out bumper, remove the cap and detach the cylinder from the body. With the cylinder and piston removed, you can remove the old bumper. Install the new bumper by placing it in the bottom of the gun using pliers and seating it with the backside of a screwdriver. Reinstall the piston into the cylinder, ensuring it sticks out slightly. Insert this assembly back into the body, ensuring the ridges on the backside of the driver face towards the rear of the gun. Finally, reinstall the cap, place the seal onto it, align the gun body with the cap, and securely fasten it with the screws.