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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
Failure to cycle Broken cylinder cap spring Replace cylinder cap spring
Head valve stuck in cap Disassemble/Check/Lubricate
Lack of power; slow to cycle Tool dry, lacks lubrication Use DeWALT pneumatic tool oil
Broken cylinder cap spring Replace cap spring
O-rings/seals cut or cracked Replace O-rings/seals
Exhaust blocked Check bumper, head valve spring, muffler
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
Head valve dry Disassemble/lubricate
Air pressure too low Check air supply equipment
Skipping fasteners; intermittent
feed
Worn bumper Replace bumper
Tar/dirt in driver channel Disassemble and clean nose and driver
Air restriction/inadequate air flow through quick
disconnect socket and plug
Replace quick disconnect fittings
Worn piston O-ring Replace O-ring, check driver
Tool dry, lacks lubrication Use DeWALT pneumatic tool oil
Damaged feed piston spring Replace spring
Low air pressure Check air supply system to tool
Loose canister nose screws Tighten all screws
Fasteners too short for tool Use only recommended fasteners
Bent fasteners Discontinue using these fasteners
Wrong size fasteners Use only recommended fasteners
English
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