26
106763
PROBLEM
Piston hangs out of
muzzle.
Overdriven fastener.
Piston jammed.
Power load strip will not
advance.
Reduction or loss of
power.
Tool does not com-
pletely depress.
Tool does not fire.
Opening and closing of
barrel or pushing down
on tool, etc. is not
smooth but is rough or
binds.
POSSIBLE CAUSE
Tool overdriven.
Piston not properly assembled in
relation to stop.
Broken piston or piston ring.
Excessive power.
Overdriving of fastener (see
above).
Advance bar or spring damaged
Tool dirty.
Piston not returning to full rear
position.
Worn piston ring or broken piston.
Misassembled or damaged sear,
firing pin parts, or guide.
Failure of tool to depress com-
pletely.
Piston not fully reset.
Dirt buildup on sear not allowing
proper penetration of firing pin or
worn firing pin.
Lack of proper cleaning.
REMEDY
Tap piston on hard surface until
piston is pushed back into the
guide. (See
Over-driven Fastener
below).
Remove barrel assembly (see
pages 18-21). Replace all dam-
aged or missing parts.
Replace piston or piston ring or
take tool to your distributor.
Change to next lower power indi-
cator setting and/or power load
level (see page 13) or use next
longer length fastener.
Remove barrel assembly (see
pages 18-21). Replace other
parts if damaged.
Replace advance bar or springs.
Clean tool. Notice: Do not at-
tempt to clean power load strip
channel with wire brush. You may
damage tool.
Barrel must be opened to the full
extended position to properly
position piston.
Replace piston and/or piston ring
or take tool to your distributor.
Remove firing pin guide and
check all parts for correct fit as-
sembly.
See data listed under T
ool does not
completely depress, above.
Fully reset piston. See step 1 un-
der
Operation, pages 14 and 15.
Check firing pin mark on power
load. Clean firing pin guide, sear
and firing pin. Replace worn or
damaged parts. Notice: Do not
attempt to clean power load strip
channel with wire brush. You may
damage tool.
Inspect and clean complete tool.
Replace worn or damaged parts.
Notice: Do not attempt to clean
power load strip channel with wire
brush. You may damage tool.
Troubleshooting Guide