Operation and Maintenance Manual forWP10 Series Four-valve Diesel Engine (China IV, V)
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antifreeze should not be drained out after shutdown. However, if the coolant contains no antifreeze additive, make
sure to drain off the coolant from the engine block, oil cooler cover, radiator and water pipes to prevent the engine
from being frost cracked.
5. Regular Inspection and Technical Maintenance of the Diesel Engine
5.1Routine Maintenance of the Diesel Engine
a. Check the liquid level and temperature of coolant
Check the coolant level through the sight hole on the expansion tank, and if it is insufficient, open the filler port
cap to add coolant. As shown in figure 5-1 and 5-2.
Notice: Before opening the filler cap, press down the air bleeding button to avoid personalby the hot coolant
while the engine is hot.
Figure5-1Coolant filler port cover
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