What are the possible reasons for the excavator not moving?
1 Answers
The possible reasons for the excavator not moving are as follows: Insufficient oil: The hydraulic tank has insufficient oil, causing the main pump to suck air. Clogged filter: The suction filter is completely blocked. Damaged coupling: The engine coupling is damaged (such as the winch, elastic disc, etc.). Main pump failure: Caused by damage to the main pump. Low servo system pressure: The servo system pressure is too low or has no pressure. Low safety valve pressure: The safety valve setting pressure is too low or stuck. Suction pipe burst: The main pump suction pipe is burst or detached. Excavator hydraulic circuit failure: Check the pilot pressure of the excavator's pilot pump for abnormalities. If abnormal, check if the pilot filter is clogged or damaged. If damaged, it will result in low pressure. Additionally, severe internal gear wear in the pilot pump can also cause internal leakage, preventing the establishment of working pressure.