What are the main reasons for hydraulic pump oil leakage in Carter 320D excavator?

1. Aging or damage of hydraulic pump seals for Caterpillar 320D excavator: Seals of hydraulic pumps, such as oil seals and gaskets, may lose their sealing performance due to aging, wear, or improper installation during long-term use, leading to oil leakage.

2. Installation issues: During installation or maintenance, if the fastening bolts are not tightened correctly or the seals are not placed correctly, it may cause oil leakage.

3. Material defects of Caterpillar 320D excavator: If there are defects in the material of the hydraulic pump base or its connecting components, such as casting defects, poor welding, etc., it may also become a hidden danger of oil leakage

4. External impact: Excavators may be subjected to various external impacts during operation, causing deformation of the hydraulic pump base or damage to the seals, which can lead to oil leakage.

5. Design defects: The design of the hydraulic pump base may have defects, such as unreasonable sealing structure, improper arrangement of oil passages, etc., which may increase the risk of oil leakage.

The source of the information is: https://www.lh-usedexcavator.com/

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