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Model W1780 1
1
⁄4" Brad Nailer
-15-
Troubleshooting
Symptom Possible Cause Possible Solution
Air leaking at
trigger valve area.
1. O-rings in trigger valve
housing are damaged.
1. O-rings must be replaced
& operation of safety nose
must be checked.
Air leaking between
housing and hose
1. Loose screws in housing.
2. Damaged O-ring.
3. Loose air fitting.
1. Tighten screws.
2. Replace O-ring
3. Tighten air fitting & use
teflon tape.
Air leaking between
housing and cap.
1. Damaged seal. 1. Replace damaged seals.
Tool skips nails
while discharging.
1. Excessive air pressure.
2. Air leaks.
3. Dirt in nose.
4. Dirt or damage prevents nails
from moving freely.
5. Inadequate air flow to tool.
6. Worn piston O-ring or lack of
lubrication.
7. Damaged trigger valve O-rings.
8. Worn bumper.
9. Cap seal leaking.
1. Reduce air pressure to tool.
2. Tighten screws and fittings.
3. Clean nose.
4. Clean magazine and
inspect/repair damage.
5. Check fittings, hose,
compressor, and air
pressure.
6. Replace O-ring and
lubricate.
7. Replace trigger valve O-
rings.
8. Replace bumper.
9. Replace cap seal.
Tool runs slowly or
has a loss of power.
1. Undersized air hose.
2. Nailer is not lubricated.
3. Broken spring in cap assembly.
4. Exhaust port in cap is blocked.
1. Use a larger hose.
2. Lubricate nailer.
3. Replace spring.
4. Clean or replace damaged
internal parts.
Fasteners
frequently jam the
nailer.
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. Use correct nails.
2. Use undamaged, clean
nails.
3. Tighten magazine.
4. Replace worn or damaged
parts.
5. Use correct angle nails.
Nailer does not
fire.
1. Nailer is not lubricated.
2. Nail is jammed in magazine or
discharge area.
3. Piston shaft is damaged.
4. Air pressure too low.
1. Follow lubricating
instructions.
2. Clear nailer magazine or
discharge area.
3. Replace piston shaft.
4. Check/increase air
pressure.
Air blows out of
exhaust cap; nailer
will not fire.
1. O-ring slipped out of groove or
damaged inside nailer.
1. Reinstall/replace suspect
O-ring; turn down air
pressure.