11
TROUBLESHOOTING GUIDE
WARNING:
Disconnect air from tool before all repairs!
Stop using the tool immediately if any of the following problems occur. Serious personal injury
could occur. Any repairs or replacements must be done by a qualified person or an
authorized service center only.
PROBLEM CAUSE CORRECTIVE ACTION
Trigger valve leaks air
Frame and nose leaks air
Frame and cap leaks air
O-rings in trigger valve housing are
damaged.
Loose nose screws.
Damaged o-rings or gasket
Bumper cracked/worn
Loose cap screws
Damaged seal or gasket
Replace o-ring
Tighten screws and recheck
Replace o-ring or gasket
Replace bumper
Tighten screws and recheck
Replace seal or gasket
Skipping fasteners,
intermittent feed
Worn bumper
Dirt in nose
Dirty/dry magazine
Damaged magazine
Air restriction/inadequate air flow
Worn o-ring on piston or lack of lubrication
Trigger valve o-ring cut/worn
Leaking cap gasket
Worn/ damaged pusher spring
Broken and damaged driver blade
Fasteners too short or wrong size for tool
Bent fasteners
Air leaks
Replace bumper
Clean
Clean/lubricate use pneumatic tool oil
Replace magazine
Fitting hose or air compressor needs to be checked
Replace o-ring. Lubricate.
Replace o-ring
Tighten screw, replace gasket
Replace spring
Replace driver blade
Use recommended fasteners only
Discontinue using these fasteners
Tighten screws and fittings
Lack of power, sluggish
Low air pressure
Lack of lubrication
Damaged or worn o-ring/seal
Exhaust blocked
Check air supply
Use pneumatic tool lubricant
Replace o-ring/seal
Check bumper, head valve spring
Fasteners jam in tool
Driver channel worn
Wrong size fasteners
Bent fasteners
Broken and damaged driver blade
Loose magazine, nose screws
Replace nose/check door
Use recommended fasteners only
Discontinue using these fasteners
Replace drive blade
Tighten all screws
Summary of Contents for BN3438JH
Page 12: ......
