How to install crushing tongs

1. After installing the pipe of the crushing tongs, first close the pipe stop valves on both sides of the forearm, and then let the operator start the excavator, set the accelerator to the mid-range position, and step on the pedal in the cab. Note: Release the foot valve every minute, and then step on the foot valve for another minute. After stepping on the bottom valve for 3 to 5 minutes, turn off the flame. At this time, use a wrench to slowly open the oil inlet stop valve of the forearm. When opening, please stand behind the shut-off valve to prevent high-pressure oil from hitting your body. After opening, a lot of dirty oil will spray out. Don't worry about the dirt in the pipeline being mixed with hydraulic oil. After the hydraulic oil flows out, observe whether the hydraulic oil gradually becomes clear, close the shut-off valve, and then open the oil return shut-off valve on the opposite side according to the above steps to drain the oil. If the hydraulic oil still cannot be removed, you can hit the excavator again and repeat the above steps until the pipeline hydraulic oil is removed.

2. After the oil unloading step is completed, the pipeline of the crusher is basically unobstructed. Currently, it has only completed one step. The next step is to strengthen the cleaning effect of the pipeline to ensure that there are no impurities in the pipeline. Take out the hose and use this pipe to connect to the oil inlet pipe and return iron pipe at both ends of the forearm. Connect in series and open the shut-off valves on both sides. At this time, set the excavator on fire, adjust the throttle to the mid-range position, step on the bottom valve with your foot, release it every 1 minute, pause for 5 seconds, and then continue pedaling. The interval time for stepping on the foot valve is also three to five minutes, and then the shut-off valves on both sides are closed. At this time, there are no impurities in the pipeline. Drain the oil before, this time use the filter element of the excavator to filter out impurities. , Has been basically cleaned, and then install the two-way bottom valve, it can work normally.

3. After completing the above two steps, you can connect the tubing of the crushing tongs to the excavator. Before starting work, it is necessary to check whether the hydraulic pressure on the equipment pipeline is the standard pressure, and then lubricate the grease nipple of the lower cylinder. Please remember that after 2-3 hours of hammering, you need to grease the grease once a day, 15 times each time.