Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
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3. Tighten the water level sensor and plug the water level sensor connector.
II. Engine Oil
HFC4DA1-2C diesel engine shall use the diesel engine oil with the quality grade at API CH-4 or above, of which the
viscosity is related to the environment temperature. When the environment temperature is reduced, the viscosity of the
engine oil is increased to increase the start resistance so that the diesel engine can’t reach the start speed and cause
difficult start. Therefore, in different seasons and regions, choose the correct engine oil with different viscosity grade
under different environment temperature, in accordance with the table below.
Environment
temperature
-15℃~40℃ -20℃~30℃
-30℃~25℃
Extreme cold region
Engine oil
trademark
10W-40/50 or 15W-40 10W-30/40/50 5W-40/50 0W-40/50
Check engine oil level:
z Stop the engine and wait for several minutes;
z Pull out the engine oil dipstick;
z Wipe the oil dipstick with clean cloth and re-insert the oil dipstick to the end;
z Pull out the oil dipstick again and observe the engine oil level. Check whether the oil level is between the upper
and lower limits of the oil dipstick. If insufficient, add the engine oil.
Notice!
z Make sure to periodically check the engine oil level.
z The apparatus used for refueling shall be clean.
z In event of sudden rise or drop of engine oil level, check for cause immediately.
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