Craftsman CMPNC18, Instruction Manual

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9
English
Troubleshooting
Problem Cause Correction
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. Loose nose screws. Tighten and recheck.
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 bumper. Replace bumper.
Loose cap screws. Tighten and recheck.
Failure to cycle. Air supply restriction. Check air supply equipment.
Worn head valve O-rings. Replace O-rings.
Broken cylinder cap spring. Replace cylinder cap spring.
Head valve stuck in cap. Disassemble/Check.
Lack of power; slow to cycle. 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 correctlyon bottom bumper. Disassemble to correct.
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.
Damaged pusher spring. Replace spring.
Low air pressure. Check air supply system to tool.
Loose magazine 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.
Leaking head cap gasket. Tighten screws/replace gasket.
Trigger valve O-ring cut/worn. Replace O-ring.
Broken/chipped driver. Replace driver (check piston O-ring).
Worn magazine. Replace magazine.
Fasteners jam in tool. Driver channel worn. Replace nose/check door.
Wrong size fasteners. Use only recommended fasteners.
Bent fasteners. Discontinue using these fasteners.
Loose magazine/nose screws. Tighten all screws.
Broken/chipped driver. Replace driver.