Inspection and Maintenance Cycle of the Hydraulic System of Small - sized Excavators
Generally, the comprehensive inspection and maintenance cycle of the hydraulic system of small - sized excavators is related to the working hours. Usually, a relatively comprehensive inspection and maintenance is required every 500 - 1000 working hours.
However, the actual maintenance cycle is also affected by the working environment. If the excavator often works in harsh environments, such as dusty, high - temperature, or humid environments, the maintenance cycle may need to be shortened, and an inspection may be required every 300 - 500 hours.
In addition, the frequency of operation and the intensity of work will also affect the maintenance cycle. High - intensity and high - frequency operations will accelerate the wear of the hydraulic system and require more frequent inspections.
Analysis of Maintenance Costs
Cost of Replacing Hydraulic Oil
A routine maintenance of the hydraulic system (including replacement of hydraulic oil and filters) may cost about $200 - $1600. If no damage to other components is found, the cost is relatively controllable. However, if the repair of key components is involved, the cost will increase significantly.
Cost of Replacing Filters
If leaks in the seals of the hydraulic system or damage to other components are found, the price of the seals themselves is relatively low, but the labor cost of replacing the seals is high. A seal may cost a few dollars to several tens of dollars, but the labor cost for replacement may be several hundred dollars. If the repair or replacement of key components such as hydraulic pumps and hydraulic motors is involved, the cost will be very high, possibly several thousand dollars or even tens of thousands of dollars.
Cost of Replacing Seals and Other Components
The filters of the hydraulic system include suction filters, return filters, and pilot filters, etc. The price of filters generally ranges from several tens of dollars to several hundred dollars. A set of filters (assuming including three main filters) may cost about $200 - $600.
Total Cost
The capacity of hydraulic oil for small - sized excavators is generally from several tens of liters to over a hundred liters. The price of hydraulic oil varies depending on the brand and quality, generally ranging from $10 to $30 per liter. For example, if a small - sized excavator has a hydraulic oil capacity of 20 liters, the cost of replacing the hydraulic oil each time is about $200 - $600.
It should be noted that the above data are for reference only, and the actual maintenance cycle and cost need to be determined according to the specific model of the excavator, usage conditions, and local repair prices.
