Doosan DX138LC - User Manual

Questions and Answers

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Andrea StantonAug 9, 2025
What to do if the power mode selector does not work on Doosan Excavators?
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  brendareevesAug 9, 2025
  If the power mode selector on your Doosan Excavators does not work, check for a blown fuse and replace it if necessary. The power mode selector switch itself might have failed, requiring replacement. Additionally, a failed connector, damaged wiring harness, or a failed e-EPOS controller could be the cause; replace the connector or switch, or repair/replace the harness or controller as required.
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Elizabeth DrakeAug 12, 2025
What to do if the working mode selector does not work on Doosan Excavators?
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  Craig SmithAug 12, 2025
  If the working mode selector on your Doosan Excavators isn't functioning, start by checking for a blown fuse and replace it if needed. It could also be due to a failed working mode selector switch, which would need replacing. Other potential causes include a failed connector, damaged wiring harness, or a failed e-EPOS controller, each requiring repair or replacement.
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sarahendersonAug 17, 2025
What to do if the starter does not operate on my Doosan Excavators?
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  Misty WallaceAug 17, 2025
  If the starter on your Doosan Excavators does not operate, there are several potential causes. First, ensure the battery has sufficient power by charging it. Check for poor terminal contact and clean and tighten the connections. Other potential issues include a failed starter switch, relay, or controller, each requiring replacement. A faulty wiring harness or battery relay could also be the culprit, necessitating replacement. Finally, check for a blown fuse and replace it if necessary.
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Brandon WrightAug 21, 2025
Why won't the battery hold a charge on my Doosan DX138LC Excavators?
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  Dennis CookAug 21, 2025
  There are several reasons why the battery in your Doosan Excavators might not hold a charge. It could be due to low battery power, which can be resolved by cleaning and retightening the terminals. A loose or bad alternator belt can also cause this issue, so tighten or replace the belt. Check for loose or corroded terminals and tighten or replace them as needed. Lastly, the alternator itself might be faulty, requiring repair or replacement.
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Erik KnappAug 26, 2025
What to do if the starter engages but the engine does not start on Doosan Excavators?
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  Brandy HooperAug 26, 2025
  If the starter engages, but the engine doesn't start on your Doosan Excavators, consider these possibilities: Fuel may have gelled due to cold weather, requiring you to replace the fuel. The fuel filters might be plugged, so replace them. There could be water or dirt in the fuel system, necessitating a cleaning of the system and addition of new fuel. Alternatively, there might be air in the fuel system, which you'll need to purge. A failed engine stop relay or a blown fuse could also be the cause; replace the relay or fuse as necessary.
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Benjamin PrestonAug 29, 2025
How to fix uncontrollable engine speed on Doosan DX138LC?
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  smithchristineAug 29, 2025
  If the engine speed on your Doosan Excavators is not controllable, it could be due to several reasons. The speed control dial, throttle controller, or speed control motor might have failed and need replacement or repair. Additionally, a blown fuse, damaged wiring harness, or failed connector can cause this issue; replace the fuse or repair/replace the harness or connector as required.
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okimSep 3, 2025
Why does my Doosan DX138LC Excavators engine start but runs only at low speed or shuts down?
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  Douglas CruzSep 3, 2025
  If your Doosan Excavators engine starts but runs only at low speed or shuts down, the issue might stem from incorrect engine oil viscosity, requiring an oil change. Clogged or dirty fuel injectors could also be the problem, so clean the injectors. Another possibility is plugged fuel filters, which should be replaced.