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Grease any part if it is inflexible or makes noise after a long period of use.
Wipe off the grease squeezed out during injecting grease.
Be careful to wipe off the old grease from each place. Sand or dust sticking to the
grease will cause wear of rotating parts.
5.2.4.
Coolant
Antifreeze must be used in all climates.
Check the coolant level as required and add it promptly if it is found to be
insufficient. Insufficient coolant can cause the engine to overheat.
Use coolant and antifreeze in the proper mix ratio according to the ambient
temperature.
Don't add coolant when the engine is overheated but not yet cooled.
5.2.5.
Filter element
Replace all filter elements regularly. However, when operating in harsh conditions,
change the filter element in a short period of time depending on the lubricant and
fuel used (sulfur content).
Do not recycle cleaned cartridges (cartridge type) again. Replace it with a new one.
When replacing the cartridge, check for metallic particles on the old cartridge. If
any metal particles are found, contact your Yuchai dealer.
Do not open the packaging of the spare cartridge before use.
5.2.6.
Hydraulic system
The hydraulic system is under high temperature during and after operation. When
operating, it is also in high pressure condition. Therefore, when inspecting and
maintaining the hydraulic system, pay special attention to wait for the temperature
to cool down and release the pressure in the hydraulic cylinder line.
When loosening plugs, screws or hose fittings, do not stand in front of the parts,
but loosen them gradually to release the internal pressure before disassembly.
