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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