Napa 6-1078 Mode D'emploi page 6

TROUBLESHOOTING
impAct WrencheS
TOOL DOES NOT RUN OR RUNS SLOWLY,
AND/OR AIR FLOWS ONLY SLIGHTLY FROM
EXHAUST — This condition is probably caused
by insufficient air pressure, contaminants
blocking the airflow or operation of motor
parts, or a power regulator which has vibrat-
ed to a closed position.
YOU SHOULD: Check the air supply for suf-
ficient pressure. Check the air inlet strainer
for blockage. Pour a generous amount of
air tool oil into air inlet. Operate tool in
short bursts, in both forward and reverse
directions. Repeat if necessary. If tool perfor-
mance does not improve, the tool should be
serviced by an authorized service center.
TOOL WILL NOT RUN, EXHAUST
AIR FLOWS FREELY. This condition is probably
caused by one or more rotor vanes stuck on
ac c u m u l a t ed sludge or varnish; motor rusted.
YOU SHOULD: Pour a generous amount of air
tool oil into air inlet. Operate tool in short
bursts in both forward and reverse directions.
Lightly tap the motor housing with a plastic
mallet. Detach the air supply. Try to free the
motor by turning the drive shaft manually,
if possible. If the tool remains jammed, it
should be serviced by an authorized service
center.
SOCKETS WILL NOT STAY ON. This condition
is probably caused by a worn socket retainer
ring or a soft backup o-ring
YOU SHOULD: Wear safety goggles. Detach
the air supply. Using external retaining ring
pliers, remove the old retaining ring. While
holding the square drive with an appropri-
ate wrench, use a small screwdriver to pry
old retainer ring out of its groove. Always
pry the ring away from your body, because
it can be propelled outward at high veloc-
ity. Replace the backup o-ring and retainer
ring with correct new parts (see breakdown).
Place the retaining ring on a table and press
the tool anvil into the ring with a rocking
motion. Snap the ring into the groove by
hand.
PREMATURE ANvIL WEAR. This is probably
caused by using chromed sockets, which are
not designed for use with impact tools, or
worn sockets
YOU SHOULD: Stop using chrome sockets.
Chrome sockets have a hard exterior surface
and a soft core, which leads to a warped but
very hard drive hole when used with impact
tools. Chrome sockets will wear wrench
anvils quickly and present a danger of split-
ting or breakage which can lead to injury or
death.
TOOL SLOWLY LOSES POWER BUT RUNS AT
FULL SPEED WHEN NOT UNDER LOAD. This
condition is probably caused by worn clutch
parts, inadequate lubrication, or worn engag-
ing cam.
YOU SHOULD: FOR OIL LUBED WRENCHES:
Check for presence of clutch oil (where oil
is specified for the clutch) and remove oil
fill plug. Tilt to drain all of the oil from the
clutch case. Refill the case with NAPA air tool
oil or that recommended by the manufac-
REVISE TODAS LAS INFORMACIONES DE ADVERTENCIA, ANTES DE PROCEDER CON EL FUNCIONAMIENTO.
6-1078
turer in the specified amount. Also check for
excess clutch oil. Clutch cases only need to be
filled 50%, and overfilling can cause drag on
high speed clutch parts. A typical 1/2" Drive
oil lubed wrench only requires 1/2 ounce of
clutch oil. FOR GREASE LUBED WRENCHES:
Check for excess grease by rotating drive
shaft by hand. It should rotate freely, and
excess grease is usually expelled automati-
cally.
TOOL WILL NOT SHUT OFF. This condition is
probably caused by a broken or maligned
throttle valve O-ring, or a bent or jammed
throttle valve stem.
YOU SHOULD: Remove the throttle assembly
and install a new o-ring. Lubricate the assem-
bly with air tool oil and operate the trigger
briskly. If operation cannot be restored, the
tool should be serviced at an authorized ser-
vice center.
Air rAtchetS
MOTOR RUNS. SPINDLE DOESN'T TURN, OR
TURNS ERRATICALLY —This condition is prob-
ably caused by worn teeth on the ratchet
or pawl, a broken or weak pawl pressure
spring, or weak drag springs which fail to
hold the spindle while the pawl advances.
YOU SHOULD: Have replacement parts
installed by an authorized service center.
TOOL DOESN'T RUN, RATCHET HEAD INDEXES
CRISPLY BY HAND— This condition is prob-
ably caused by the accumulation of dirt or
sludge in motor parts.
YOU SHOULD: Pour a generous amount of air
tool oil into the air inlet. Operate the throt-
tle in short bursts. With the tool engaged
on a bolt, alternately tighten and loosen the
bolt by hand. If the tool remains jammed, it
should be serviced at an authorized service
center
Air DrillS
TOOL WILL NOT RUN, RUNS SLOWLY, AIR
FLOWS SLIGHTLY FROM EXHAUST, SPINDLE
TURNS FREELY — This condition is probably
caused by a blocked air passage or jammed
motor parts.
YOU SHOULD: Check the air inlet for block-
ages. Pour a generous amount of
air tool oil into air inlet. Operate the trig-
ger in short bursts. Detach the air supply.
Turn the empty and closed drill chuck by
hand. Reconnect air supply. If the tool's
performance does not improve, it should be
serviced by an authorized service center.
TOOL WILL NOT RUN. AIR FLOWS FREELY
FROM EXHAUST. SPINDLE TURNS FREELY.
This condition is prob a b ly caused by a broken
rotor vane or jammed or broken gears.
YOU SHOULD: Pour a generous amount of
air tool oil into air inlet. Operate the trig-
ger in short bursts. Detach the air supply.
Turn the empty and closed drill chuck by
hand. Reconnect air supply. If the tool's
performance does not improve, it should be
serviced by an authorized service center.
TOOL SEIzED. SPINDLE WILL NOT
CONSERVE ESTE MANUAL PARA TENER UNA REFERENCIA EVENTUAL.
TURN — This condition is probably caused by
a broken rotor vane or jammed or broken
gears.
YOU SHOULD: Have the tool serviced by an
authorized service center.
TOOL WILL NOT SHUT OFF — The throttle
valve o-ring has probably come unseated.
YOU SHOULD: Replace the o-ring (see break-
down) or have tool serviced by an authorized
service center.
Air hAmmerS
TOOL WILL NOT RUN — This condition is
probably caused by a clogged cycling valve or
throttle valve.
YOU SHOULD: Check the air inlet for block-
ages. Pour a generous amount of
air tool oil into air inlet. Operate the trig-
ger in short bursts with the chisel in place
and against a solid surface. Detach the air
supply. Tap the nose or barrel lightly with a
plastic mallet, reconnect the air supply, and
repeat above steps. If the tool is still seized,
insert a 6" piece of 1/8" diameter rod in the
nozzle and lightly tap to loosen the piston in
the rear direction. Reconnect air supply and
repeat above steps.
CHISEL STUCK IN NOzzLE— This condition is
probably caused by a deformed shank.
YOU SHOULD: Have tool serviced by an
authorized service center
NOTE: DISASSEMBLY OF THIS TOOL BY ANY
OTHER THAN AN AUTHORIZED SERVICE
CENTER WILL VOID THE WARRANTY ON THIS
TOOL.
SAnDerS/GrinDerS
TOOL HAS NO POWER OR RUNS SLOWLY—
This condition is probably caused by insuffi-
cient air pressure, contaminants blocking the
air flow, or speed regulator that has vibrated
to a closed or off position.
YOU SHOULD: Check the air supply at the
compressor and air lines to the tool for suffi-
cient air pressure. Check the air inlet strainer
for blockage and make sure speed regulator
is in the open or on position. If power is not
restored the tool should be serviced by an
authorized service center.
tOOl SeiZeD. pAD/SpinDle Will nOt
turn–This condition is probably caused by a
broken rotor vane, jammed or broken gears,
or seized bearing.
yOu ShOulD: Have the tool repaired by an
authorized service center.
TOOL WILL NOT SHUT OFF/RUNS
CONTINUOUSLY–The throttle valve seat has
become loose or damaged.
yOu ShOulD: Replace o-ring or valve seat
(see breakdown for proper parts) or have tool
serviced by an authorized service center.
SAnDS / GrinDS unevenly–This condition
is usually caused by loose pad/disc connection
or worn or damaged pad/disc.
yOu ShOulD: Check pad/disc connection,
ensure that connection is secure and tight.
Replace worn or damaged pad/disc.
6 Rev. 02/18/14