Troubleshooting - Grizzly H7949 Owner's Manual

troubleshooting

symptom
air leaking at trig-
ger valve area.
air leaking between
housing and hose.
air leaking between
housing and cap
assembly.
tool skips nails
while discharging.
tool runs slowly
or has a loss of
power.
nails frequently jam
in the nailer nose.
nailer does not fire.
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-
possible cause
1. o-rings in trigger valve hous-
ing are damaged.
1. loose screws in housing.
2. Damaged o-ring.
3. loose air fitting.
1. Damaged cap gasket.
1. air leaks.
2. Dirt in nose.
3. Dirt or damage prevents nails
from moving freely in maga-
zine.
4. inadequate air flow to tool.
5. worn o-ring on piston or lack
of lubrication.
6. Damaged o-rings on trigger
valve.
7. worn bumper.
1. nailer is not sufficiently lubri-
cated.
2. Compressor is not supplying
at least 70 psi of air pressure
to the tool.
3. Exhaust port in cap is blocked.
1. nails are the wrong size.
2. nails are bent or dirty.
3. Magazine or nose screws are
loose.
4. Driver or driver guide are worn
or damaged.
5. nails are wrong angle.
1. nail is jammed in magazine or
discharge area.
2. piston shaft is damaged.
3. air pressure too low.
solution
1. o-rings must be replaced.
1. tighten screws.
2. replace o-ring.
3. tighten air fitting & use
teflon tape.
1. replace gasket.
1. tighten screws and fittings.
2. Clean nose.
3. Clean magazine, inspect/
repair damage; insert a
clean strip of nails.
4. Check fitting, hose, com-
pressor & air pressure.
5. replace piston o-ring.
lubricate.
6. replace trigger valve o-
rings.
7. replace bumper.
1. lubricate nailer.
2. repair or replace your
compressor.
3. Clean or replace damaged
internal parts.
1. use correct nails.
2. use undamaged, clean
nails.
3. tighten magazine.
4. replace worn or damaged
parts.
5. use correct angle nails.
1. Clear nailer magazine or
discharge area.
2. replace piston shaft.
3. Check/increase air pres-
sure.
h7949/h7950/h7951 nailer