[Weichai Lovol Class] Winter Maintenance of the Fourth National Loader, You Should Do It!

November 16, 2022

Winter has come，When you add clothes, don't forget to check and maintain our loader in time.，Learn the following points together with Xiaobian.！

The first point：Maintenance of fuel circuit

● Select the fuel correctly

Diesel should be selected according to the local temperature and the cold filter plugging point and condensation point of diesel.。

● Maintain the fuel circuit

（1）Replace the fuel filter according to the maintenance interval.；

（2）Thoroughly clean the water separator，Timely discharge of impurities and water，Replace those that cannot be thoroughly cleaned；
（3）Clean the diesel tank regularly，Remove the sediment from the bottom.；

The second point：Selection of engine oil

Should be based on local temperatures，Select the appropriate engine oil according to the viscosity of the engine oil。

The third point：Choose high-quality antifreeze

●Two indicators to measure antifreeze

One is the freezing point，Ordinary antifreeze can reach—40℃，High-quality antifreeze can achieve—60℃Left and right；The second is the boiling point，Antifreeze should have a boiling point of at least 108℃（Pass positiveRegulate the channel，Purchase regular original products）。

● Consideration of anti-corrosion and anti-rust performance

Anti-corrosion and anti-rust performance directly affects the service life of engine cooling system。Secondly, anti-scaling should be considered.，Scale and rust seriously affect the cooling function of the cooling system.，Therefore, before replacing the antifreeze, it is better to clean up the scale and rust spots in the radiator before adding new antifreeze.。

● Replacement frequency of antifreeze

Antifreeze is recommended to be replaced every 2 years.，Different types of antifreeze must not be mixed.，In order to avoid chemical reaction、Precipitation or bubble generation。

The fourth point：Water pump inspection

Some equipment has oil emulsification after replacing antifreeze.，The reason may be due to the aging and failure of the water seal of the pump.，The antifreeze enters the engine oil passage through the water seal and reaches the engine oil pan, resulting in the emulsification of engine oil.。Therefore, closely observe the engine oil level after replacing the antifreeze.，The oil level is found to be high，The machine shall be shut down for inspection，The method of replacing the water pump seal or the water pump assembly is generally adopted.。

After repair, the machine shall be operated at idle speed with no load，Use the new engine oil to remove the residual antifreeze in the engine lubrication system.，Notice：Shorten the interval for the next oil Chan，O as to ensure the normal functioning of the engine lubrication system.。

The fifth point：Maintenance of three leakages of equipment

Thermal expansion and cold contraction phenomenon in the hydraulic system、Air Path、Seals for waterways，Pecially rubberOType Ring、More obvious on seals such as rectangular ring，The temperature stays below 0.℃Time，The machine will leak oil.、Air leak、Water leakage，In particular, the temperature continues to approach.-10℃Time。Therefore, before the equipment enters winter, it is necessary to carry out a comprehensive overhaul of the three leakages of the whole machine.，Eliminate three leakages and hidden troubles。

Point 6：Overhaul electrical equipment

In winter, the aging equipment is often difficult to start.，So，Checking and replacing aging electrical circuits and components during seasonal maintenance is an essential measure to reduce start-up difficulties.，The battery should also be thoroughly checked and maintained。

Warm air equipment is essential for outdoor work in winter.，Therefore, the operation of the heating equipment should be checked before the severe winter.。