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TROUBLESHOOTING GUIDE
MANY COMMON PROBLEMS CAN BE SOLVED EASILY BY UTILIZING THE CHART BELOW.
FOR MORE SERIOUS OR PERSISTENT PROBLEMS, CONTACT A DEWALT SERVICE CENTER OR CALL 1-(800)-4-DEWALT.
WARNING: To reduce the risk of serious personal injury, remove
fasteners from magazine before making any adjustments or servicing this tool.
SYMPTOM CAUSE FIX
Trigger valve housing leaks air O-ring cut or cracked Replace O-ring
Trigger valve stem leaks air O-ring/seals cut or cracked Replace trigger valve assembly
Frame/nose leaks air O-ring or gasket is cut or cracked Replace O-ring or gasket
Bumper cracked/worn Replace bumper
Frame/cap leaks air Damaged gasket or seal Replace gasket or seal
Cracked/worn head valve Replace head valve
Loose cap screws Tighten and recheck
Failure to cycle Air supply restriction Check air supply equipment
Worn head valve Replace head valve
Broken cylinder cap spring Replace cylinder cap spring
Head valve stuck in cap Disassemble / Check
Failure to complete cycle Debris in nose, door, contact arm area Clean nose, door, contact arm area
Lack of power; slow to cycle Broken cylinder cap spring Replace cap spring
Rings/seals cut or cracked Replace rings/seals
Exhaust blocked Check bumper, head valve spring
Trigger assembly worn/leaks Replace trigger assembly
Dirt/tar build up on driver Disassemble nose/driver to clean
Cylinder sleeve not seated correctly on bottom bumper Disassemble to correct
Air pressure too low Check air supply equipment
Clogged air filter Clean or replace air filter
English
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