Frequently Asked Question-Tianjin Pauway Power Equipment Co., Ltd
Installation Commissioning & TrainingMaintenance ServiceFrequently Asked Question
  • 1. What are the replacement parts for a Cummins diesel engine routine repair?
  • A :1, piston ring, 2, inlet door, 3, Exhaust door, 4, Intake door seat; 5, intake and exhaust door conduit, 6, Live jian cooling nozzle, 7, upper repair package, 8, turbocharger repair kits, 9, Gas door locks, 10, connecting rod tiles, 11, oil bottom shell gasket; 12, injector adjustment and accessories; PT oil pump adjustment and accessories; 14. Cylinder liner.

  • 2. What are the reasons for diesel engine black smoke?
  • A :1, turbocharger work failure; 2, valve assembly is bad, 3, injector or high-pressure oil pump precision coupling work failure; 4,camshaft components wear excessive;5, the intercooler is too dirty, the gas intake is not enough; 6, fuel injector aprons seal bad; 7 , cylinder assembly pull cylinder; 8, poor diesel quality, 9, air filter blocking.

  • 3. What are the causes of the engine white smoke?
  • A :1, injector or high-pressure oil pump precision coupling failure; 2, diesel engine burning oil (ie, the turbocharger burning oil), 3, valve guide pipe and valve wear excessive, oil leakage into the cylinder, 4, there is water in diesel, 5, injector copper sleeve leaking water into the cylinder, 6, piston ring wear over or oil ring is fitted reversely, cylinder burning oil. 7, exhaust breathing tube did not clean for a long time, dirty or blocked.

     
     
  • 4. At high load, what are the causes of the smoke exhaust pipe and the turbocharger redness?
  • A :1, fuel injector or high-pressure oil pump precision coupling work failure; 2, camshaft, with moving arm components, rocker arm components excessive wear, 3, the intercooler is too dirty, air inlet shortage, 4, turbocharger work failure, 5, air valve components sealed bad.

  • 5. In general, under what circumstances, the diesel engine operating power loss is larger?
  • A :1, the cylinder components wear too much; 2, fuel injector or high-pressure oil pump precision coupling work failure, 3, PT Pump work failure, 4, the timing correction gear work abnormally 5, turbocharger work failure, 6, intercooler dirty; 7, the air valve seal is bad; 8, diesel lattice, air lattice is too dirty.

  • 6. Diesel engine oil pressure is too low ,what is the cause?
  • A :1, the bearing and crankshaft of the coordination gap is too large, that is, the bearing and crankshaft wear over; 2, a variety of bushings and shafting wear is too large, 3, cooling nozzle or oil pipeline leakage, 4, oil pump work failure, 5, oil pressure sensor failure, 6, oil cooler too dirty which lead to excessive high temperature, 7, oil quality is bad.

  • 7. What are the reasons for the high temperature of the diesel engine?
  • A :1, the water pump is damaged, 2, the thermostat is damaged, 3, fan belt, pump belt is too loose, 4, Radiator is dirty (internal or external).

  • 8.In what condition, diesel engine will get bush-buring
  • A:1、Oil pump work failure;2、excessive gap of the shafts,;3、lack of water lead to high temperature ;4、oil shelve block ;5、oil quality is bad。

  • what is causes for engine bottom foul air or it come from the engine foul air pipe?
  • A :1, cylinder components wear over, 2, oil bottom shell has water (cylinder head rupture, injector copper sleeve water, cylinder liner rotten wear, cylinder liner leakage, cylinder leakage); 3, there is cylinder scuffing phenomenon.

  • 10. What causes the engine speed instability?
  • Answer:1, the diesel engine has the power loss too big fault, 2, PT Pump"s electronic actuator attrition and the PT pump internal mechanical fault, 3, EFC electronic speed board work failure, 4, the speed of the head damage, 5, diesel fuel lattice too dirty, 6, diesel pipeline leakage.
  • 11. What is the case with water in the diesel oil sump?
  • A :1, cylinder liner rupture or cylinder liner breakage, 2, cylinder body rupture, 3, cylinder head rupture, 4, injector copper sleeve leakage.
  • 12. What is the cause of the diesel engine abnormal sound?
  • Answer:1, valve and piston collision; 2, connecting rod screw loosening, piston and cylinder head collision, 3, EFC plate fault, 4, PT oil pump failure caused oil supply instability, 5, fuel injector oil explosion cylinder, 6, diesel engine bearing gap is too large, 7, diesel pipeline leakage.
  • 13. What is the cause of diesel oil in the sump of diesel engine?
  • A :1, Fuel injector O-Ring damage, 2, injector atomization bad, drop oil, 3, injector installation is improper; 4, the injector reinstall without a new O-ring.
  • 14. What causes the diesel engine to vibrate too much?
  • Answer:1, the diesel engine bearing clearance is too large or the axial clearance exceeds the limit, 2, the injector atomization is bad and knock the cylinder; 3, the connection of the diesel engine and the alternator is deformed; 4, the Flywheel assembly is improperly installed; 5, crankshaft, connecting rod all kinds of fastening screws loose;
  • 15. Using capacitor compensation cabinet to improve the economic value of power factor?
  • a :1, to improve power generation equipment power supply capacity, 2, to save power equipment investment, improve the utilization of electricity equipment, 3, reduce voltage loss, reduce voltage fluctuations, improve power quality; 4, reduce transmission, change, distribution equipment current, In order to reduce the electrical energy loss of the transmission process, 5, reduce electricity tariffs, reduce costs.
  • 16. What is the cause of the start failure of the diesel generators ?
  • A :1, battery is not power, 2, start motor fault, 3, magnetic starter fault, 4, fuel cut-off valve fault, 5, DC Monitoring Board fault, 6, diesel pipeline has air, 7, oil pump fault.
  • 17. Under what circumstances does the generator have no voltage output or voltage fluctuations?
  • A :1, PMG stator or rotor damage; 2, AVR board damage, 3, diode components damage, 4, exciter rotor or stator damage, 5, the main alternator stator or rotor damage, 6, P2, P3, P4 line short-circuit or open circuit, 7, P6, P7, P8 line short-circuit or open circuit; 8, X , XX line short-circuit or open circuit.


  • 18. What is the cause of oil pressure alarm under normal oil pressure?
  • A :1, oil pressure alarm failure, 2, oil pressure touch the ground wiring, 3, DC monitoring board failure.
  • 19. When the water temperature is normal, what is the cause of the high temperature alarm?
  • A :1, water temperature alarm fault, 2, water temperature alarm touch the ground wiring, 3, DC monitoring board failure.
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