TROUBLESHOOTING GUIDE
MANY COMMON PROBLEMS CAN BE SOLVED EASILY BY UTILIZING THE CHART BELOW.
FOR MORE SERIOUS OR PERSISTENT PROBLEMS, CONTACT A D
EWALT 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 O-ring cut or cracked Replace trigger valve assembly
CT housing leaks air CT housing O-ring cut or cracked Replace CT housing assembly
Shuttle O-ring cut or cracked Replace O-ring
CT housing plate loosened or damaged Replace CT housing assembly
Frame/Nose leaks air Loose nose screws Tighten screws and recheck
O-ring cut or cracked Replace O-ring
Bumper cracked or worn Replace bumper
Frame/Deflector leaks air Damaged gasket Replace gasket
Cracked or worn head valve piston Replace head valve piston
Cracked or damaged sleeve Replace sleeve
Loose deflector screws Tighten screws and recheck
Failure to cycle Air supply restriction Check air supply equipment
Tool dry, lack of lubrication
Lubricate tool using DEWALT pneumatic tool oil
Worn head valve O-rings Replace O-rings
Broken head valve spring Replace head valve spring
Head valve stuck in cap Disassemble/Check/Lubricate
Trigger valve O-ring cut or cracked Replace trigger valve assembly
Wishbone cam pin broken or missing Replace wishbone cam pin
Wishbone cam broken, worn or missing Replace wishbone cam
Cam spring broken or missing Replace cam spring
Cam follower broken or missing Replace cam follower
Moveable nose broken Replace moveable nose
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