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H6141 Air Palm Nailer
-9-
Replacing Pistons/O-
Rings
If you use your nailer day in and day out,
replacement pistons are cheap insurance
against wasted down time and lost profits,
in the event that a piston or piston shaft
becomes worn out.
6. Push the ram pin towards the inside of
the nailer. This will push the cylinder
free of the housing.
7. Remove the piston from the cylinder
by pulling it free by the ram pin.
8. Place a new O-ring on the new piston
and apply a thin film of the nailer lubri-
cating oil on the O-ring.
9. Insert the new piston in 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 inside the
cylinder.
10. After the piston is inserted correctly,
place the cylinder back in the housing.
If seated correctly, the cylinder will
snap into place.
11. Push the cylinder collar down into
the housing as far as it will go. The
horizontal air slots on the side of the
cylinder should be visible.
12. Replace the rear cap assembly and
tighten the four cap screws.
13. Replace the flat washer, compression
spring, depth guide and nose piece
and tighten using a 19mm wrench.
14. For more assistance, or to install a
complete O-ring set, refer to the appro-
priate breakdown diagram in the back
of this manual for component loca-
tions.
To replace a piston:
1. DISCONNECT NAILER FROM THE
AIR SUPPLY!
2. Unscrew the nose piece with a 19mm
wrench.
3. Remove the nose piece, depth guide,
compression spring and flat washer.
4. Remove the four cap screws and
washers on the back of the nailer.
5. Remove the cap.
Always disconnect air from nailer
whenever servicing! During mainte-
nance, a nailer connected to air may
fire accidentally, causing serious
personal injury!