Kobelco SK200-8 excavator PT pump idle speed inspection:
In the case of the engine running, the air in the oil road is eliminated and the engine reaches the working temperature; the screw plug is screwed off under the cover of the spring assembly of the PT-G two level governor; the idle speed of the idle speed is adjusted, the adjustment screw is increased at idle speed, the adjustment screw is unscrewed and the idle speed is reduced; after the idle speed is adjusted, the screw plug is installed.
On the PT injection pump equipped with MVS full speed governor, the maximum speed and idle speed adjusting screw is located on the governor cover, and then the nut is locked immediately after the adjustment is made in order to prevent the air from entering the injection pump.
For different uses of diesel engines, the general manufacturers have recommended idle speed, which allows a reasonable change, if too large, it is difficult to hang gear, and if it is too low, it is easy to extinguish.
Idle speed is related to governor plunger. Check the extension of plunger booster.
Kobelco SK200-8 excavator PT pump maximum speed (acceleration pedal to the end) check:
The maximum speed is usually calibrated on the PT injection pump test rig. Generally, the method of increasing or reducing the speed spring washer of the governor is generally used to adjust it. If the test bench is up-regulated, it does not need to be changed.
The site inspection method of the highest no-load speed is to make the transmission in the separation state or clutch, open the throttle valve and keep the full open position, at this time the maximum speed of the diesel engine should be 10% to 12% higher than that of the speed governor's break point; when this speed is much higher than the specified value, the governor should be inspected or checked for failure. Whether the parts are suitable.
