Problem Encountered | Possible Cause | Possible Solution |
Insufficient pressure at air | Pressure regulator knob is not turned to high | Adjust pressure regulator knob to proper setting. |
tool or air accessory: | enough pressure. |
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| Defective motor/pressure regulator switch. | Replace. |
| Restricted air intake filter. | Clean or replace the filter element. |
| Air leaks. | Check for leaks by applying soap solution to all fit- |
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| tings and connections. Bubbles will appear at leak- |
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| age points. Tighen or replace leaking fittings or con- |
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| nections as needed. |
Hose or hose connections are too small or long.
Replace with larger hose or connectors.
Air compressor is not large enough for air requirement.
Check the accessory air requirement. If it is higher than the CFM or pressure supply of the air compres- sor, you need a larger air compressor.
Air compressor not making | Restricted air intake filter. | Clean or replace the filter element. |
enough air: | Leaking (reed) valve. | Drain air tank and measure pump up time. Compare |
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| to specifications. If lower, remove pump head and |
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| inspect valve plate, vlave seats, and vlave reeds. |
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| Clean or replace as needed. |
| Restricted pilot valve. | Clean or replace. |
| Low compression. | Low pressure may be due to worn piston rings and |
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| cylinder walls. Inspect for excessive wear and |
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| replace worn parts as needed. |
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Excessive oil consumption: | Restricted air intake filter. | Clean or replace air filter element. |
| Air compressor on unlevel surface. | Do not incline the air compressor more than 10 |
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| degrees in any direction while running. |
| Crankcase overfilled with oil. | Drain oil. Refill to proper level with 30 weight non- |
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| detergent air compressor oil. |
| Plugged oil dipstick vent. | Clean and check breather for proper ventilation. |
| Oil leaks. | Repair. |
| Worn piston rings or scored cylinder. | Replace worn or damaged parts as needed. |
| Improper oil viscosity. | Drain oil. Refill to proper level with 30 weight non- |
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| detergent air compressor oil. |
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Oil has milky appearance: | Water in oil due to condensation. |
Moisture in discharge air: Condensation in air tank caused by high level of atmospheric humidity or air compressor is not running long enough.
Change oil and move air compressor to a less humid environment.
Drain tank after every use. Drain air tank more often in humid weather and use an air line filter.
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