When the excavator is weak, the handle sinks, and the construction efficiency is low. Generally, if the pressure is abnormal, replace the hydraulic oil return filter element, clean or replace the pilot filter element and oil suction filter element. This article will summarize the function of hydraulic oil return filter element and precautions for replacement. As each brand has different requirements for this, it is only for reference.
1. Function of hydraulic oil return filter element
The hydraulic oil return filter element has the function of protecting the hydraulic circuit. In order to prevent the invasion of foreign matters and dust, the hydraulic oil return filter element plays the role of removing the metal powder, oil sludge generated in the hydraulic circuit or the foreign matters invaded due to the use of the crushing hammer and the replacement of the working device. If it is not replaced regularly, the oil return filter element will be blocked and lose its filtering function. It will cause serious faults such as hydraulic device wear or sintering.
2. Precautions for replacing oil return filter
When replacing the filter, please pay attention to the installation of the inner cylinder, metal plate and sealing strip. If it is not installed and used directly, foreign matters and oil sludge may be mixed into the hydraulic circuit. If the wrong installation method is used continuously, the hydraulic oil cannot be fully filtered, which may cause serious damage to the hydraulic circuit.
