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G6045/G6046/G6047 18 Gauge Brad Nailer
-9-
Replacing Pistons/O-Rings
If you use your nailer day in and day out,
Grizzly offers repair pistons as cheap
insurance against wasted down time and
lost profits in the event that a piston or pis-
ton shaft becomes worn out. To replace a
piston:
Figure 7. Removing rear cap.
6. Remove the guide cover from the
nose assembly by loosening the 2 cap
screws.
7. Watch the nose assembly and push
the top of the piston with your finger.
You will see the piston shaft slide
along the guide.
8. Push the piston shaft back inside the
nailer until you can grip the piston
head and remove it from the cylinder.
9. Place a new O-ring on the new piston
and apply a thin film of the proper
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. 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,
replace the guide cover and tighten
the 2 cap screws. 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.
Always disconnect air from nailer
whenever servicing! During mainte-
nance, a nailer connected to air may
fire accidentally, causing serious
personal injury!
1. Disconnect the nailer from the air
supply!
2. Remove all nails from the magazine
cartridge.
3. Remove the 4 cap screws on the back
of the nailer, near the exhaust port.
4. Remove the rear cap as shown in
Figure 7.
5. The top of the piston should now be
visible inside the cylinder, which is
housed in the back of the nailer.