Excavators replace the hydraulic oil of rock drills to produce these effects. do you know?
If your trencher often uses a crusher, the blackening of hydraulic oil is not only due to impurities, but also due to irregularities in grease.
When using a trencher instead of a trampoline, you need to lift a broken hammer to press the steel into the piston. Each filling only needs half of the standard grease gun. Because if the steel is not pressed when adding butter, the butter will be placed at the upper limit of the steel tank. When steelmaking, the butter will directly impact the main oil seal and piston of the circuit breaker. The reciprocating movement brings the butter into the cylinder of the circuit breaker, and then the hydraulic oil in the cylinder of the circuit breaker is mixed into the hydraulic system of the trencher, and the hydraulic oil deteriorates and turns black.
The following are various individual actions. Starting from the bottom, do the shovel first, then do the top and bottom of the bulldozer. When you look at the top or don't touch the structure at all, try to push the shovel down, lift the whole machine, and lift it up. Keep it for a few minutes to see if there is an automatic drop and if there is leakage in the cylinder or valve core;
Try again, go forward about 10 meters at the same time, and then return about 10 meters at the same time to see if there is any obvious deviation. If there is a significant deviation, the oil path is uneven and needs to be repaired, then step aside and walk back and forth to see if it can succeed. When the engine is at medium speed, it should be able to go aside. (Idle speed is not common when walking on one side and is usually not included in the fault range).
Try to rotate again. When testing rotation, there should be two fast and slow operations. When the operation is slow, the rotation response is too slow or too fast. Too slow means that the guide handle will not rotate within one-third of the stroke. Too fast means that the handle starts to move slightly, the swing action starts immediately, the response is too fast, and the braking performance must be tested. After the handle stops operating, it should be rotated again. Some brakes have poor performance and may have to stop at 180 degrees. This is a problem that needs to be addressed. Personally think that the braking range is less than 45 degrees, and it is considered qualified;
Try buckets, sticks and oil booms. There is no strict standard for speed. Generally touch by hand, available here. The bucket extends and occupies the entire stroke for about 3 seconds. The stick stretched out and closed. The whole journey takes about 4.5 seconds, and the boom will rise or fall to the end, about 5 seconds. If the movement is too fast or too slow, the machine will generally feel it directly. Too fast and too slow is a problem. Too slow affects efficiency, too fast, it is easy to damage the machine, it should be repaired, its value will drop.
The trencher needs to change the hydraulic oil reasonably and correctly to avoid the effect of urging me to use it.