Doosan D90S-5 - User Manual

Other manuals for Doosan D90S-5

Service Manual366 pages

Questions and Answers

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fordcharlesAug 8, 2025
Why is there excessive black smoke coming from my Doosan Engine?
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  Melissa HernandezAug 8, 2025
  Excessive black smoke from your Doosan Engine may be due to several reasons. The air cleaner element might be clogged, so try replacing or cleaning it. There could be restrictions in the air duct, which you should check and correct. Another potential cause is leakage at the intake manifold, so inspect and fix that as well. The turbocharger could be seized up and not rotating, or the turbine and compressor blades might be damaged or in contact with each other, requiring disassembly, repair, or replacement. Finally, the exhaust piping could be deformed or clogged; check and correct it.
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nicoleclementsAug 17, 2025
What to do if my Doosan Engine has low output?
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  Dr. Melanie StoutAug 17, 2025
  If your Doosan Engine has low output, start by checking for gas leaks in the exhaust system and correct them. Also, the air cleaner element may be restricted, so replace or clean it. The turbocharger could be fouled or damaged, requiring disassembly, repair, or replacement. Lastly, check for leakage at the discharge port on the compressor side and correct it.
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john04Aug 25, 2025
How to fix unusual sound or vibration in my Doosan Engine?
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  Michelle NixonAug 25, 2025
  If your Doosan Engine is making unusual sounds or vibrating, the rotor assembly might be coming into contact, or the rotor rotation may be unbalanced, either of which would require disassembly, repair, or replacement. Also, the engine could be seized up, which would also require disassembly, repair, or replacement. Check if each joint loosened and correct.
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Ashlee HawkinsAug 30, 2025
What causes excessive white smoke from a Doosan Engine?
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  Jose JarvisAug 30, 2025
  Excessive white smoke from a Doosan Engine can be caused by an oil leak into the turbine and compressor, which requires disassembly, repair, or replacement. It may also be due to a worn or damaged seal ring because of excessive bearing wear, also requiring disassembly, repair, or replacement.