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Problem
3) Head of a nail
Air pressure is too low.
driven into a
Workpiece is very hard.
workpiece
protrudes
from the wood
Driver blade is worn.
surface.
Piston O-ring is abnormal
(worn or damaged).
Cylinder's internal surface is
abnormal (worn or rough).
4) Nails clog the
Unspecified nails used.
mechanism.
<Improper nail feed>
See <Magazine> in item 1).
Driver blade worn.
<The driver blade has not
returned completely.>
See <Output section> in
item 1).
Plunger O-ring (inside the
5) Single
valve bushing) is abnormal
actuation
(worn or broken).
impossible.
O-ring (P-9, inside valve
sleeve (A)) is abnormal
(worn or broken).
6) Piston
O-ring (inside dia. 10.7) at
actuates just
the outside of the valve
by pulling the
bushing is abnormal (worn,
trigger (when
damaged or broken).
single
actuation is
Gasket (G) is abnormal
selected).
(improperly mounted, worn
or damaged).
Possible cause
Inspection method
Drive a nail into soft wood
workpiece and check if the
head protrudes from the
wood surface.
Operate the nailer without
nails and check if the driver
blade is projected from the
nose tip.
Disassemble the output
section and check the piston
ring, O-ring and the inner/
outer surfaces of the
cylinder for abnormal
condition.
Check if the nails are
specified ones.
Check if they move
smoothly after putting nails,
and check if the nail feeder
operates smoothly.
Check if the driver blade tip
is worn.
Perform idle driving or
actually drive with nails,
and check if the driver
blade has returned
completely.
Set the single actuation/
contact actuation selector to
the single actuation.
Perform idle driving once
and keep the nail feeder
pulled backward. Check that
no air leaks from the inside
of plunger (B) and valve
sleeve (A).
Disassemble the control
valve and check the O-ring.
Disassemble the exhaust
cover and check that gasket
(G) is normal and mounted
properly.
--- 21 ---
Remedy
Adjust for 5 to 8.5 kgf/cm
Do not use unspecified
workpieces.
Replace the driver blade.
Replace the defective part.
Use specified nails.
See <Magazine> in item 1).
Replace the part.
See <Output section> in
item 1.)
Replace the defective part.
Replace the defective part.
Mount it properly or replace
the defective parts.
2
.
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