When a construction machinery filter such as an excavator works for a period of time and more dust is adsorbed on the filter elements, the gas resistance passing through the construction machinery filter such as the excavator increases. When the circulating gas resistance is higher than 6.3KPa, the air filter clogging sensor installed between the air filter and the turbocharger will transmit the signal to the air filter clogging indicator light on the instrument panel. The air filter should be serviced when the indicator light turns on.
Excavator and other construction machinery filter failure causes and troubleshooting methods:
- Machine Malfunction:weak engine, black smoke.
Cause of issue: The filter element is clogged. Remedy: blow clean the filter element or replace the filter element.
Cause of issue: The air filter sucks paper scraps or rags, etc. Remedy: clean up.
Cause of issue: Rainwater enters the air filter. Remedy: dry the filter element or replace it.
- Machine Malfunction: The engine is worn prematurely.
Cause of failure: Intake short circuit. Remedy: Check error proofing.
Cause of failure: The filter element is damaged and failed. Remedy: replace.
Cause of failure: The dust bag is invalid. Remedy: replace