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4-31
Fault
Causes
Solutions
4. Engine
overheated
• Low coolant level
• Add coolant
• Faulty temperature sensor
• Replace the sensor
• Air filter blocked
• Clean the air filter
• Loose or faulty fan belt
• Retighten or replace
• Dirt in the cooling system line
• Clean the coolant line
• Poor or excessive oil quality
• Replace the oil
5. Low oil
pressure
• Low oil level
• Refill the oil
• Oil filter blocked
• Clean oil filter
• Oil pipeline leakage
• Retighten or replace
• High engine cooling water
temperature
• Correct mixing ratio for coolant
preparation or consult with local
dealers of the manufacturer
6. The engine
emitting gray
black smoke
• Poor fuel quality
• Use the correct fuel
• Air filter blocked
• Replace the filter element
• Abnormal injection timing
• Adjust according to the specified
value
• Poor nozzle atomization
• Check and replace the parts
7. The engine
emitting white
smoke
• Poor fuel quality
• Use the correct fuel
• Excessive engine oil
• Restore to the recommended oil
level
• Abnormal injection timing
• Adjust according to the specified
value
• There is water in the cylinder
and fuel
• Check and replace the fuel
8. Failure of
battery
charging
• Loose or rusty connection
• Clean or retighten
• Generator belt loose and faulty • Retighten or replace
• Generator charging failure
• Consult with dealers of the
manufacturer
• Electrolyte failure of the battery • Replace the battery
• Electrolyte failure of the battery • Replace the battery
9. The starter
does not work
or rotates
slowly
• Loose or rusty connection
• Clean or retighten
• Insufficiently charged battery
• Replace
• Damaged circuit
• Consult with dealers of the
manufacturer
10. Engine
running and
generator
alarm light on
• Generator failure
• Consult with dealers of the
manufacturer
• Electronic regulator
malfunction
• Replace
• Circuit failure
• Maintenance
11. Hydraulic
system
components
move too
slowly
• Cold hydraulic oil
• Control action heating up
• Low pilot system pressure
• Consult with dealers of the
manufacturer
• Incorrect hydraulic oil used
• Use the correct hydraulic oil
• Slow engine RPM
• Consult with dealers of the
manufacturer
Summary of Contents for U35
Page 5: ...1 1 1 Preface...
Page 15: ...2 1 2 Safety regulations...
Page 45: ...3 1 3 Introduction of components...
Page 70: ...4 1 4 Operation guide...
Page 90: ...4 21 6 After the engine shuts down reset the shutdown lever...
Page 104: ...5 1 5 Maintenance...
Page 147: ...6 1 6 Accessories guide...