Evercraft Air Tools 776-9264 Guide D'utilisation page 5

Troubleshooting
IMPACT WRENCHES
TOOL RUNS SLOWLY OR NOT AT ALL AND/OR AIR FLOWS ONLY SLIGHTLY FROm ExHAUST — This is
prob a b ly caused by: air flow blocked by dirt build-up; motor parts jammed with dirt; power regulator has
vibrated to closed position.
YOU SHOULD: Check 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 motion. Repeat if necessary.
TOOL WILL NOT RUN, ExHAUST AIR FLOWS FREELY. This is probably caused by one or more motor vanes
stuck due to ac c u m u l a t ion of 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 motion. Lightly tap motor housing with plastic mallet. Detach air supply. Try to free motor by
turning drive shank man u al ly, if possible.
SOCkETS WILL NOT STAY ON. This is probably caused by: worn socket retainer ring or soft back-up ring.
YOU SHOULD: Wear safety goggles. Detach air supply. Using external retaining ring pliers, remove old retaining
ring. Holding square drive with ap p ro p ri a te open-end wrench, use small screwdriver to pry old retainer
ring out of groove. Always pry off ring away from your body - it can be pro p elled outward at high velocity.
Replace back-up O-ring and retainer ring with correct new parts. (See breakdown). Place retaining ring
on table, press tool anvil into ring in a rocking motion. Snap into groove by hand.
PREmATURE ANVIL WEAR. This is probably caused by: use of chrome sockets or worn sockets.
YOU SHOULD: Stop using chrome sockets. Chrome sockets have a hard surface and a soft core. Drive hole
becomes rounded - but will still be very hard. Besides the danger of splitting, wrench anvils will wear out
prematurely when used with chrome sockets.
TOOL SLOWLY LOSES POWER BUT STILL RUNS AT FULL FREE SPEED. This is probably caused by: worn
clutch parts, due to in a d e q uate lubrication; engaging cam of clutch worn or sticking due to inadequate
lubrication.
YOU SHOULD: FOR OIL LUBED WRENCHES - check for presence of clutch oil (where oil is specified for clutch)
and remove oil fill plug; tilt to drain all oil from clutch case; refill with 30 weight SAE oil or that
recommended by man u f ac t ur e r, in the specified amount. Also check for excess clutch oil. Clutch cases
need only be filled 50%. Over f ill i ng can cause drag on high speed clutch parts. A typical 1/2" oil-lubed
wrench only requires 1/2 ounce of clutch oil. FOR GREASE LUBED WRENCHES - Check for excess grease
by rotating drive shank by hand. It should turn freely. Excess is usually expelled automatically.
TOOL WILL NOT SHUT OFF. This is probably caused by: throttle valve O-ring broken or out of position or
throttle valve stem bent or jammed with dirt particles.
YOU SHOULD: Remove assembly and install new O-ring. Lubricate with air tool oil and operate trigger briskly.
AIR RATCHETS
mOTOR RUNS. SPINDLE DOESN'T TURN, OR TURNS ERRATICALLY — This is prob a b ly caused by: worn
teeth on ratchet or pawl; weak or broken pawl pressure spring; weak drag springs fail to hold spindle
while pawl advances for another bite.
YOU SHOULD: See 90 day limited warranty.
TOOL DOESN'T RUN, RATCHET HEAD INDExES CRISPLY BY HAND— This is prob a bly caused by: dirt or
sludge build-up in motor parts.
YOU SHOULD: Pour a generous amount of air tool oil into air inlet. Operate throttle in short bursts. With socket
engaged on bolt, alternately tighten and loosen bolt by hand.
776-9264 5 Rev. 06/16/10