This technical note will help to diagnose common problems and
will give suggestions to solve them.
To prevent injury, ALWAYS DISCONNECT THE AIR SUPPLY HOSE when adjusting,
servicing or disassembling the tool.
First: Always check the compressed air supply
Many of problems come from a faulty or inadequate compressed air supply system.
Before attempting to repair the tool, the following points should be checked:
- Check the pressure at the output of the compressor; adjust to 80-100 psi (5.5-7.0 bar) as required.
- Check the tank pressure of the compressor & adjust the start/stop limits.
- Check the air delivery system; a 3/8" hose is recommended.
- Use fewer tools simultaneously; do not exceed the capacity of the compressor or of the delivery system.
- Drain water from the compressor.
Second: Check for air leaks
At rest, this tool should not have any air leak. Before attempting to repair
the tool and replace parts, check the following:
- Check all seals in head, valve and cylinder assemblies; replace if necessary.
- Check the top edge of main cylinder for burrs or dents.
- Clean & lubricate the head and valve assemblies; re-assemble the head assembly carefully.
- Check the interior of the head for scratches.
Tool does not drive fasteners
- Check for fasteners in the magazine.
- Check that the proper type of fasteners is used; 16ga & 18ga nails are not interchangeable.
- Make sure the feeder clip is engaged behind the fasteners.
- Check the front end of the magazine for burrs or damages.
- Check the safety mechanism.
- Check if the driver is stuck in down position (see below).
- Check for obstruction in the fastener ejection area.
Head assembly loosens up during operation.
Remove the head assembly and insure that the cylinder is fully screwed onto it.
Re-insert the head assembly in place and insure that it is fully screw in place using moderate effort.
Lock in place with the head lock. Check regularly that the head is always fully screwed.
Fasteners are not set completely
- First, check air supply (see section above).
- Clean and lubricate tool; particularly the head assembly.
- Increase air pressure when working with harder woods; do not exceed 110 psi (7.6 bar).
- Check the driving blade for broken end.
- Check piston wear-ring; replace if piston is sliding too easily.
- Check seal bushing.
- Check the adjustment of the base and ensure the tool is well seated on the floor while ejecting.
Tool does not activate
- Check air supply.
- Inspect the head assembly and check all seals; reassemble carefully.
Driving blade does not return
- Check for jammed fastener or obstruction.
- Check gate/foot and front end of magazine for damages or burrs.
- Check the driving blade.
- Inspect the head assembly and check all seals; clean & lubricate.
- Check band-valve on cylinder.
- Check that the bumper and seal bushing are in place; severe damages will occur if missing.
Broken or worn driving blade
Replace the driving blade. Failure to follow the instructions carefully will
result in repeated breakage of the driving blade.
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