How To Repair Dewalt Framing Nail Gun

How do I Repair a Dewalt D51844 Nail Gun?

The D51844 is a framing nailer capable of driving upwardly to a 3 ½ inch long full round common smash. Equally with most air nailers, when properly maintained DeWalt framing nailers will give years of problem-free service.

Most tool boxes take the tools required to repair DeWalt blast guns.

The most mutual issues, other than unproblematic troubleshooting, are caused by 1 of two parts, the driver cylinder or the trigger valve. Both of these units are sealed with rubber O rings that control the release of force per unit area from the nailer. Worn O rings or a damaged valve or driver cylinder can crusade erratic firing, or cause the gun non to function at all. You lot can buy both the O rings and the entire associates for both parts from DeWalt.

Trigger Valve Assembly

Disconnect the gun from the air hose. Locate the roll pin direct to a higher place the trigger. Lay the gun on its left side and utilise a small metal punch and ballpeen hammer to drive the scroll pin out, until the trigger mechanism is loose. Remove the trigger to expose the forepart of the trigger valve.
Pull the valve assembly from the nailer's handle, pulling toward the tip of the gun. Audit the valve and O rings, looking for wear on the rings and cracks or splitting in the plastic valve. If the valve appears undamaged and the trigger has been easily returning to its original position later on firing, replace just the O rings. If there is credible harm to the valve, or the trigger has malfunctioned, supplant the unabridged assembly.
Fit new O rings onto the valve body and employ oil to the rings with a cotton swab, or apply oil to the rings on the new valve, depending on your repair option. Fit the valve dorsum into the nailer handle, aligning the grooves on the valve with the opening for a proper fit. Press the valve all the manner in.
Fit the trigger dorsum in place and apply the metal dial and hammer to reset the roll pin, with gentle taps, to move the pin slowly to avoid bending the pin or dissentious the caput. Reconnect the air hose and return the tool to normal apply.

Driver Cylinder Service

Disconnect the nailer from the air hose. Remove the four screws belongings the foursquare vent to the back of the gun. Use an allen cardinal and plough the screws counterclockwise to remove them. Lift the encompass from the rear of the gun.
Button a thin metal rod through the fastener port in the tip of the gun to push the driver cylinder out the back of the gun. Inspect the cylinder and O rings as previously outlined for the trigger valve. Audit the metal driver besides, looking for bends, grooves or crude edges. Replace the O rings, the O rings and cylinder or the O rings cylinder and driver, depending on the harm you find.
Insert the cylinder into the gun. Align the notches to the nailer body for right fit and press the cylinder all the way home. Reinstall the rear vent and install the iv mounting screws, tightening them with the allen key. Reattach the air hose and return the gun to normal use.

The Drip Cap

The D51844 is a framing nailer capable of driving up to a 3 ½ inch long total round common nail.
Worn O rings or a damaged valve or driver cylinder can cause erratic firing, or cause the gun non to function at all.
Lay the gun on its left side and apply a pocket-sized metallic dial and ballpeen hammer to drive the curlicue pin out, until the trigger mechanism is loose.
If the valve appears undamaged and the trigger has been easily returning to its original position subsequently firing, replace only the O rings.
Press the valve all the style in.
Disconnect the nailer from the air hose.
Remove the four screws holding the square vent to the back of the gun.