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TROUBLESHOOTING
Symptom | Possible Cause | Solution | ||
Air leaking at trig- | 1. | 1. | ||
ger valve area. |
| ing are damaged. |
| & operation of safety nose |
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| must be checked. |
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Air leaking between | 1. Loose screws in housing. | 1. | Tighten screws. | |
housing and hose. | 2. Damaged | 2. | Replace | |
| 3. | Loose air fitting. | 3. | Tighten air fitting & use tef- |
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| lon tape. |
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Air leaking between | 1. Damaged seal. | 1. | Replace damaged seals. | |
housing and cap |
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assembly. |
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Tool skips nails | 1. Air leaks. | 1. | Tighten screws and fittings. | |
while discharging. | 2. Dirt in nose. | 2. | Clean nose. | |
| 3. | Dirt or damage prevents nails | 3. | Clean magazine and |
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| from moving freely in maga- |
| inspect/repair damage. |
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| zine. |
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| 4. | Inadequate air flow to tool. | 4. | Check fitting, hose, com- |
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| pressor & air pressure. |
| 5. | Worn | 5. | Replace piston |
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| of lubrication. |
| Lubricate. |
| 6. | Damaged | 6. | Replace trigger valve O- |
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| valve. |
| rings. |
| 7. | Worn bumper. | 7. | Replace bumper. |
| 8. | Cap seal leaking. | 8. | Replace cap seal. |
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Tool runs slowly | 1. Nailer is not sufficiently lubri- | 1. | Lubricate nailer. | |
or has a loss of |
| cated. |
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power. | 2. Broken spring in cap assem- | 2. | Replace spring. | |
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| bly. |
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| 3. | Exhaust port in cap is blocked. | 3. | Clean or replace damaged |
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| internal parts. |
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Fasteners frequent- | 1. Nails are the wrong size. | 1. | Use correct nails. | |
ly jam the nailer. | 2. Nails are bent or dirty. | 2. | Use undamaged, clean | |
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| nails. |
| 3. | Magazine or nose screws are | 3. | Tighten magazine. |
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| loose. |
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| 4. | Driver or driver guide are worn | 4. | Replace worn or damaged |
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| or damaged. |
| parts. |
| 5. | Nails are wrong angle. | 5. | Use correct angle nails. |
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Nailer does not fire. | 1. Nail is jammed in magazine or | 1. | Clear nailer magazine or | |
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| discharge area. |
| discharge area. |
| 2. | Piston shaft is damaged. | 2. | Replace piston shaft. |
| 3. | Air pressure too low. | 3. | Check/increase air pres- |
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| sure. |
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H7943 /H7944 Framing Nailer |