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TROUBLE SHOOTING
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
F
rame/nose leaks air O-ring or gasket is cut or cracked . . . . . . . . .Replace O-ring or gasket
Bumper cracked/worn . . . . . . . . . . . . . . . . . . .Replace bumper
F
rame/cap leaks air Damaged gasket or seal . . . . . . . . . . . . . . . . .Replace gasket or seal
Cracked/worn head valve . . . . . . . . . . . . . . .Replace head valve
Loose cap screws . . . . . . . . . . . . . . . . . . . . . . .Tighten and recheck
F
ailure to cycle Air supply restriction . . . . . . . . . . . . . . . . . . . .Check air supply equipment
W
orn head valve . . . . . . . . . . . . . . . . . . . . . . .Replace head valve
Broken cylinder cap spring . . . . . . . . . . . . . . .Replace cylinder cap spring
Head valve stuck in cap . . . . . . . . . . . . . . . . . .Disassemble / Check / Lubricate
L
ack 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
D
irt/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;
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 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
189854RB_EHF-LHF_Manual_189854RB_EHF-LHF_Manual 2011/6/29 下午 2:58 Page 12
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