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| Troubleshooting |
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PROBLEM | CAUSE |
| SOLUTION |
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Paint guns not turning off immediately | Valve needed | 1. | Spray needle with light coat of lubricant. |
or at all |
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| Use air hose or water hose to break up |
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| and remove solidified beads. |
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| 2. | Replace needle, seat, and packings (see |
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| Repair Kit 238339). |
Gun arm wobbling or hopping exces- | Swivel nut | Gun arm wobbles | |
sively |
| 1. | Remove dust cap (547). |
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| 2. | Tighten boom arm swivel nut (504) until |
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| swivel has slight restriction. |
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| Gun arm hops | |
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| 1. | Lower air pressure in gun arm wheel. |
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| 2. | Replace damaged gas shock (507). |
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Excessive overspray on gun arm | Paint guns out of position | 1. | Angle paint guns back 15° to 20°. |
wheel |
| 2. | Coat wheel and gun arm parts with |
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| Auto Mask ZEP to prevent paint from |
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| sticking to them. |
Pulsation in spray pattern | Low or erratic pressure in paint pump | 1. | Check paint supply and suction inlet |
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| screens. |
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| 2. | Replace spray tips. |
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| 3. | Check outlet filter. |
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| 4. | Replace packings. Clean and service |
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| intake valve and piston valve. |
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3A1696C | 21 |
