Doosan D80 - User Manual

Questions and Answers

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grimesbryanSep 1, 2025
What to do if my Doosan D80 Air Compressor fails to shutdown?
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  efoxSep 1, 2025
  If your Doosan Air Compressor fails to shutdown, it could be due to several reasons: * A defective discharge air temperature switch, Sep. Temp Switch, engine temp switch, or engine oil pressure switch; replace the switch. * A defective shutdown solenoid; carefully block the air inlet to stop the engine. * A malfunctioning relay; replace the relay. * A defective start switch; pull the wire off the shutdown solenoid and replace the defective item. * A wire shorted hot; repair the short.
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Patricia LewisNov 9, 2025
What to do if my Doosan D80 Air Compressor won’t start or run?
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  jenniferescobarNov 9, 2025
  If your Doosan Air Compressor won’t start or run, consider these potential causes and solutions: * Check if it's out of fuel and add CLEAN diesel fuel if needed. * Service clogged fuel filters. * Ensure the compressor oil level is adequate by adding the correct oil. * Inspect and repair or replace any loose wire connections. * Verify the battery voltage and check the electrolyte level and connections. * Address a defective alternator by replacement or repair. * Check the engine water temperature and add fluid if necessary. * Replace a malfunctioning start switch, defective D2 diode, defective discharge air temp switch, defective engine oil pressure switch, defective engine temp switch or defective separator tank temp switch. * Replace any blown fuses and check for shorts...
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Valerie JohnsonNov 17, 2025
Why does my Doosan D80 unit shutdown?
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  Hannah MillsNov 17, 2025
  The Doosan Air Compressor unit might shut down due to several reasons: * The unit is out of fuel, in which case you should add CLEAN diesel fuel. * The compressor oil level is too low, so you should add the correct oil. * The compressor oil temperature or engine water temperature is too high. For compressor oil temperature consult Table 4, and for engine water temperature, check and add coolant if needed. * There's a loose wire connection; wiggle wires at switches and connector blocks, and make necessary repairs. * A component such as the discharge air temperature switch, engine oil pressure switch, or a relay is defective; replace the switch or relay. * The engine fan belt is broken and needs replacement. * The engine oil pressure is too low; check the engine oil level and ...
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Kimberly PriceNov 24, 2025
How to troubleshoot high compressor oil temperature in my Doosan D80?
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  Thomas MirandaNov 24, 2025
  To troubleshoot high compressor oil temperature in your Doosan Air Compressor, consider the following: * Clean dirty cooler exterior surfaces. * Add oil if the oil level is low, and check for leaks. * Replace clogged oil filter elements and change the oil. * Reduce operating pressure if it is too high. * Move the unit to a cleaner environment if operating conditions are dirty. * Note that ambient temperatures above 120°F (49°C) exceed the specification limit. * Relocate or reposition the unit if it is out of level by more than 15 degrees. * Check the oil specification in the manual to ensure the correct lube oil is being used. * Close the canopy and replace the belly pan to prevent recirculation of cooling air. * Replace the thermostat in the bypass valve if it is malf...