-15-
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
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 / Lubricate
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
Skipping fasteners;
Worn bumper . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace bumper
intermittent feed
Debris in nose, door, contact arm area . . . . Clean nose, door, contact arm area
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 BOSTITCH Air Tool Lubricant
Worn magazine . . . . . . . . . . . . . . . . . . . . . . . . . Replace magazine
Clogged air filter . . . . . . . . . . . . . . . . . . . . . . . . Clean or replace air filter
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
