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Symptom
Air leaking at
whack cap area.
Air leaking between
housing and hose
Air leaking between
housing and cap.
Tool skips staples
while discharging.
Tool runs slowly or
has a loss of power.
Fasteners
frequently jam the
stapler.
Stapler does not
fire.
Air blows out
of exhaust cap;
stapler will not
fire.
Troubleshooting
Possible Cause
1. O-rings in plunger/cylinder
housing are damaged.
1. Loose screws in housing.
2. Damaged O-ring.
3. Loose air fitting.
1. Damaged seal.
1. Excessive air pressure.
2. Air leaks.
3. Dirt in nose.
4. Dirt or damage prevents
staples from moving freely.
5. Inadequate air flow to tool.
6. Worn piston O-ring or lack of
lubrication.
7. Damaged plunger/cylinder O-
rings.
8. Worn bumper.
9. Cap seal leaking.
1. Undersized air hose.
2. Stapler is not lubricated.
3. Broken spring in cap assembly.
4. Exhaust ports on cylinder cap
are blocked.
1. Staples are the wrong size.
2. Staples are bent or dirty.
3. Magazine or nose screws are
loose.
4. Driver or driver guide are
worn or damaged.
5. Staples are wrong angle.
1. Stapler is not lubricated.
2. Staple is jammed in magazine
or discharge area.
3. Piston shaft is damaged.
4. Air pressure too low.
1. O-ring slipped out of groove or
damaged inside stapler.
-14-
Model W1784 (Mfg. Since 2/07)
Possible Solution
1. O-rings must be replaced &
operation checked.
1. Tighten screws.
2. Replace O-ring
3. Tighten air fitting & use
teflon tape.
1. Replace damaged seals.
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 plunger/cylinder
O-rings.
8. Replace bumper.
9. Replace cap seal.
1. Use a larger hose.
2. Lubricate stapler.
3. Replace spring.
4. Clean or replace damaged
internal parts.
1. Use correct staples.
2. Use undamaged, clean
staples.
3. Tighten magazine.
4. Replace worn or damaged
parts.
5. Use correct angle staples.
1. Follow lubricating
instructions.
2. Clear stapler magazine or
discharge area.
3. Replace piston shaft.
4. Check/increase air
pressure.
1. Reinstall/replace suspect
O-ring; turn down air
pressure.
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