Bostitch LPF21PL manual Trouble Shooting, Problem Cause Correction

		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	Loose nose screws	.Tighten and recheck
	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 bumper	.Replace bumper
	Loose cap screws	.Tighten and recheck
Failure to cycle	Air supply restriction	.Check air supply equipment
	Tool dry, lack of lubrication	.Use BOSTITCH Air Tool Lubricant
	Worn head valve O-rings	.Replace O-rings
	Broken cylinder cap spring	.Replace cylinder cap spring
	Head valve stuck in cap	.Disassemble/Check/Lubricate
Lack of power; slow to cycle	Tool dry, lacks lubrication	.Use BOSTITCH Air Tool Lubricant
	Broken cylinder cap spring	.Replace cap spring
	O-rings/seals cut or cracked	.Replace O-rings/seals
	Exhaust blocked	.Check bumper, head valve spring, muffler
	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
	Head valve dry	.Disassemble/lubricate
	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 O-ring	.Replace O-ring, check driver
	Tool dry, lacks lubrication	.Use BOSTITCH Air Tool Lubricant
	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 O-ring)
	Dry/dirty magazine	.Clean/lubricate use BOSTITCH Air Tool Lubricant
	Worn magazine	.Replace magazine
Fasteners jam in tool	Driver channel worn	.Replace nose
	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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