Troubleshooting - DeWalt DWEHF1838K Guide D'utilisation

TROUBLESHOOTING

PROBLEM
Trigger valve housing leaks air
Trigger valve stem leaks air
Frame/nose leaks air
Frame/cap leaks air
Failure to cycle
Lack of power; slow to cycle
Skipping fasteners;
intermittent feed
Fasteners jam in tool
CAUSE
O-ring cut or cracked . . . . . . . . . . . . . . . . . . . . Replace O-ring
O-ring/seals cut or cracked . . . . . . . . . . . . . . Replace trigger valve assembly
O-ring or gasket is cut or cracked . . . . . . . . . Replace O-ring or gasket
Bumper cracked/worn . . . . . . . . . . . . . . . . . . . Replace bumper
Damaged gasket or seal . . . . . . . . . . . . . . . . . Replace gasket or seal
Cracked/worn head valve . . . . . . . . . . . . . . . Replace head valve
Loose cap screws . . . . . . . . . . . . . . . . . . . . . . Tighten and recheck
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 / Lubricate
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
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 ring . . . . . . . . . . . . . . . . . . . . . . . . Replace 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 ring)
Dry/dirty magazine . . . . . . . . . . . . . . . . . . . . . . Clean/lubricate use D
Worn magazine . . . . . . . . . . . . . . . . . . . . . . . . . Replace magazine
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
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CORRECTION
WALT Air Tool Lubricant
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