Why does the breaker have black oil?

2023-09-12

Some users find that black oil appears when using the breaker. What is going on? Let us find out:

The appearance of black oil in the equipment is mostly due to improper filling of butter. When adding, the personnel must lift the equipment and press the steel drill into the piston. We should pay attention to adding half a gun each time.

If the steel drill is not pressed when adding butter, the added butter will be at the upper limit of the steel drill groove. When the steel drill is working, the butter will jump directly to the main oil seal of the breaker, accompanied by the reciprocating movement of the piston. Bringing butter into the middle cylinder of the breaker hammer, and then mixing the hydraulic oil in the middle cylinder of the breaker into the hydraulic system of the excavator will cause the hydraulic oil to deteriorate or turn black.

The appearance of black oil in the equipment may also be due to damage to the dust seal and oil seal of the piston. When the piston is affected at high speed, the dust on the contact surface of the drill rod is brought into the piston, causing the hydraulic oil to turn black. Workers can reduce external dust by installing an oil return filter device and a water spray device.

The above is an introduction to why black oil appears in the breaker. Here, the editor recommends that when replacing hydraulic accessories such as oil pipes, steel pipes, and oil return filters, the staff should pay attention to removing dust or dust at the interfaces. It can be replaced only after the debris has been cleaned up. If the distance between the bushing and the steel drill exceeds 8 mm, the bushing needs to be replaced. Generally, one upper bushing needs to be replaced for every two lower bushings.