Bostitch BT125, Operation And Maintenance Manual

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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

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

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

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

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