Operation and Maintenance Manual forWP10 Series Four-valve Diesel Engine (China IV, V)
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Note:
1) The oil filling capacity in this table is only for reference, for the actual filling, take the oil
dipstick as the standard.
2) If fuel system protector or fuel filter with water separator is equipped, its element should be
replaced together with the fuel filter.
3.3 Lubrication of tensioner
The tensioner shall be lubricated with general lithium base grease for automobile (Refer to national standard
GB/T5671-1995).
3.4Diesel engine coolant
The diesel engine cooling system shall be filled with pure coolant. The function of coolant is to prevent freezing
under cold weather and to prevent boiling under high temperature. Furthermore, the coolant contains
rust-inhibiting and anticorrosion additives, which can offer special protection to the water tank and engine cooling
chamber, and avoid cylinder liner cavitation and cooling system corrosion.
The Weichai Power special coolants with freezing points of -25°C, -35°C and -40°C are available. Please choose
the coolant based on the local ambient temperatures in such manner that the freezing point of coolant should be
10°C lower than the local air temperature.
Table 3-4Weichai Power special coolants for heavy-duty engine
Heavy-duty
engine coolant
HEC-II-25
HEC-II-35
HEC-II-40
Notice:1) Check the coolant regularly to prevent corrosion damage. Replace the coolant if necessary.
2) Never use water or low-grade coolant.