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Standards for oil deterioration in hydraulic systems of construction machinery
Notes on Project Standard valuesWhen the viscosity changes by (10-15)% and three
Notes on Project Standard values
When the viscosity changes by ±(10-15)% and three of the indicators exceed the standard value, new oil should be replaced
Acid value (mg(KOH)/g) ±(20-30)%
Moisture content (volume) > 0.15%
Particulate impurities shall not be lower than the specified contamination grade
The specific gravity changes by ±0.05
Rust test: Rust
Corrosion test corrosion
The emulsification condition has been emulsified
The state of the oil changes from boiling to blackening
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