Problem | Action | ||||||
|---|---|---|---|---|---|---|---|
Loose drive gear or pulley |
Important:: DO NOT BACK OFF THE CRANKSHAFT NUT TO ALIGN THE COTTER PIN AND CASTELLATED NUT. Some compressors do not use castellated nuts. DO NOT USE IMPACT WRENCHES. Inspect the fit of the drive gear on pulley on the compressor crankshaft. The pulley on gear must be completely seated and the crankshaft nut must be tight.
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Excessively worn drive couplings or gears | Inspect drive gear and couplings and engine for excessive wear . Replace as necessary. Non-metallic gears should be replace when the compressor is changed. | ||||||
Compressor cylinder head or discharge line restrictions | Inspect the compressor discharge port and discharge line for carbon build-up. If carbon is detected, check for proper cooling to the compressor. Inspect the discharge line for kinks and restrictions. Replace discharge line as necessary. | ||||||
Worn or burned out bearings | Check for proper oil pressure in the compressor. Minimum required oil pressure; 15 psi engine idling, 15 psi maximum governed engine rpm. Check for excessive oil temperature-should not exceed 240°F. | ||||||
Faulty compressor | Replace or repair the compressor after that no other installation defects exist. | ||||||
Air compressor pulley | Replace the air compressor pulley if noise still exist. |
