Bostitch N88RH, N88WWB manual Trouble Shooting, Problem Cause, Correction

TROUBLE SHOOTING

PROBLEM CAUSE CORRECTION

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

Fastener misses metal connector hole

O-ring cut or cracked O-ring/seals cut or cracked Loose nose screws

O-ring or Gasket is cut or cracked Bumper cracked/worn Damaged gasket or seal Cracked/worn head valve bumper Loose cap screws

Air supply restriction

Tool dry, lack of lubrication Worn head valve O-rings Broken cylinder cap spring Head valve stuck in cap Tool dry, lacks lubrication Broken cylinder cap spring O-rings/seals cut or cracked Exhaust blocked

Trigger assembly worn/leaks Dirt/tar build up on driver Cylinder sleeve not seated correctly on bottom bumper

Head valve dry

Air pressure too low Worn bumper

Tar/dirt in driver channel

Air restriction/inadequate air flow through quick disconnect socket and plug

Worn piston O-ring

Tool dry, lacks lubrication Damaged pusher spring Low air pressure

Loose magazine nose screws Fasteners too short for tool Bent fasteners

Wrong size fasteners Leaking head cap gasket Trigger valve O-ring cut/worn Broken/chipped driver Dry/dirty magazine

Worn magazine

Driver channel worn

Wrong size fasteners

Bent fasteners

Loose magazine/nose screws

Broken/chipped driver

Broken / chipped guide Broken / missing 158457 torsion spring

Broken Pendulum

Broken 158455 pin

Replace O-ring

Replace trigger valve assembly Tighten and recheck Replace O-ring or gasket Replace bumper

Replace gasket or seal Replace bumper Tighten and recheck Check air supply equipment

Use BOSTITCH Air Tool Lubricant Replace O-rings

Replace cylinder cap spring Disassemble/Check/Lubricate Use BOSTITCH Air Tool Lubricant Replace cap spring

Replace O-rings/seals

Check bumper, head valve spring, muffler Replace trigger assembly Disassemble nose/driver to clean

Disassemble to correct Disassemble/lubricate Check air supply equipment Replace bumper

Disassemble and clean nose and driver

Replace quick disconnect fittings Replace O-ring, check driver Use BOSTITCH Air Tool Lubricant Replace spring

Check air supply system to tool Tighten all screws

Use only recommended fasteners Discontinue using these fasteners Use only recommended fasteners Tighten screws/replace gasket Replace O-ring

Replace driver (check piston O-ring) Clean/lubricate use BOSTITCH

Air Tool Lubricant Replace magazine Replace nose/check door

Use only recommended fasteners Discontinue using these fasteners Tighten all screws

Replace driver

Replace guide

Replace torsion spring (grease before installation) Replace pendulum and torsion spring

Replace pin and torsion spring

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