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Experience from senior master: What are the reasons for sudden halt of the loader diesel engine, and how to deal with it?

  • When the diesel engine halts suddenly during running, do not restart it immediately; please inspect carefully to find out the solution.
senior master
  • Experience from senior master: What are the reasons for sudden halt of the loader diesel engine, and how to deal with it?

  • Major reasons for sudden halt of the loader diesel engine:

  • Experience from senior master: What are the reasons for sudden halt of the loader diesel engine, and how to deal with it?

  • (I) Fault in the fuel supply system.The engine may stop suddenly due to ingress of air in the oil-way of the diesel engine or interruption of fuel supply, and before the sudden halt, it always incurs speed fluctuation and runs unsteadily. 

  • Experience from senior master: What are the reasons for sudden halt of the loader diesel engine, and how to deal with it?

  • The interruption of fuel supply may be caused by the followings:a. Fuel shortage in fuel tank. Add fuel;b. Poor oil-way tightness. 

  • Experience from senior master: What are the reasons for sudden halt of the loader diesel engine, and how to deal with it?

  • Such fault can be diagnosed through bleeding the fuel system after the halt. If there are many foam-like bubbles discharged from the bleed screw when you pump the fuel with the hand pump, then the halt may be caused by the air invaded in the oil. 

  • Experience from senior master: What are the reasons for sudden halt of the loader diesel engine, and how to deal with it?

  • In this case, check the tightness of the low-pressure oil-way carefully.c. Breakage or key rolling of the fuel injection pump camshaft, or rupture of the connecting plate. Overhaul the fuel injection pump.

  • (II) Locking of the crankshaft

  • Experience from senior master: What are the reasons for sudden halt of the loader diesel engine, and how to deal with it?

  • Observe whether the water temperature is unusual, and whether there is water in the oil sump (oil emulsified) after the halt. If OK, turn the diesel engine crankshaft. 

  • If the crankshaft rotates strenuously or remains still, it can be concluded that bearing bush has burnt out, or even the crankshaft has locked therefrom. 

  • If this happens, find out the reason, clean the oil-way, grind the crankshaft, and replace the bearing bush and parts (connecting rod, etc.) prior to assembly and test running.

  • Experience from senior master: What are the reasons for sudden halt of the loader diesel engine, and how to deal with it?

  • (III) Cylinder scoring

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