To replace a piston and O-ring:
1. DISCONNECT NAILER FROM THE AIR SUPPLY!
2. Remove all nails from the magazine.
3. Remove the four cap screws on the head of the nailer, near the exhaust port.
4. Remove the cap.
5. The top of the piston should now be visible inside the cylinder, which is housed in the head of the nailer.
6. O pen the nose cover as if to clear a jammed nail.
7. Watch the discharge area and push the top of the piston with your finger.
You will see the piston shaft slide down the discharge area.
8. With a long flathead screwdriver or similarly shaped tool, push the piston shaft back inside the nailer until you
can grip the piston head and remove it from the cylinder. (Be careful not to scratch the discharge area
when pushing the piston shaft with the screwdriver.)
9. Place a new O-ring on the new piston and apply a thin film of the nailer lubricating oil on the O-ring.
10. Insert the new piston in the cylinder. Make sure that the grooves on the piston shaft line up with those on the
guide at the bottom of the cylinder. The new piston should easily slide into the cylinder.
DO NOT force the piston into the cylinder! If the piston is not easily inserted, double-check the alignment of
the piston shaft with the grooves on the guide.
11. After the piston is inserted correctly, close the magazine pusher. Replace the rear cap assembly and tighten the
4 cap screws.
12. For more assistance, or to install a complete O-ring set, refer to the appropriate breakdown diagram in the
back of this manual for component locations.
MAINTENANCE
Cleaning
Disconnect the nailer from the air supply before cleaning. Use a good solvent to clean the nose assembly of the nailer.
Always be sure that the nailer is dry before using it again.
Do not allow dust, chips, sand, etc. into the air connectors or into the body of the nailer; this may result in leaks and
damage to the nailer and the air couplings.
Never use gasoline or other flammable
liquids to clean this tool. Vapors
in the tool may ignite, causing the
tool to explode. Ignoring this warning
may lead to serious personal injury or
even death!
Lubricating
-Place 2 to 6 drops of pneumatic tool oil in the nailer air inlet (as shown in Figure 8) every 2 hours of continuous
use. Wipe off any excess oil near the nailer exhaust to avoid dust build-up.
-Another option to manual oiling would be to simply install a lubricator in your air
compressor line. If your air compressor line already has a lubricator, then regular lubrication of your nailer will
not be necessary. Just make sure there is always oil in the lubricator.
Figure 8. Lubricating nailer via air inlet.
