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

CAUSECORRECTION

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

Clogged air filter

Clean or replace air filter

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

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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Bostitch EHF1838K, LHF2025K manual Troubleshooting, Problem, Causecorrection