Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
10
20W-50 -15-45
Note:
1) Before starting the diesel engine, ensure to check the engine oil level within oil pan.
2) Do not check the oil level while the diesel engine is running.
3) Never mix special engine oil of Weichai Power with engine oils of other manufacturers.
For the added volumes of engine oil and numbers of filters of Weichai Power engines. See Table 2-3.
Table 2- 3 Added Volumes of Engine Oil and Numbers of Filters of Weichai Power Engines
Model
Added
volume of
engine oil
(L)
Number of filters
Diesel engine
Engine oil
filter
Diesel filter
Coarse filter Fine filter
4M11 9~12 1 1 1
Remark:
1) The added volumes listed in the table are only for reference. Actual
added volumes shall be decided with the oil dipstick.
2) If the vehicle is equipped a highly-cold-resistant filter or
moisture-removing filter as developed by Weichai Power, they shall also
be replaced when the fuel is replaced.
2.1.3 Coolant
The freezing point specification for Weichai special coolant includes -25ºC, -35ºC, and
-40ºC. Please choose Weichai special coolant of different freezing points based on the local
environmental temperature in such manner that the freezing point is less than local air
temperature by approximately 10ºC, with reference to Table 2-4.
Table 2- 4Weichai Special Heavy-duty Engine Coolant
Variety Product category
Packing
specification
Heavy-duty
engine coolant
HEC-Ⅱ-25
HEC-Ⅱ-35
4kg，10kg
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