1) pre test preparation.
A adjusts the sag of the track to equal the droop of the two tracks.
B find a flat, strong test road with a length of 10 m, and 3 to 5M acceleration and deceleration zones at both ends.
C keeps the bucket at the height of 0.3~ 0.5 m from the ground, and the bucket and bucket are turned in.
The temperature of D hydraulic oil is (50 + 5) C.
2) walking speed detection.
A detects the medium speed and high speed walking of the excavator.
B select the following switch position: (1) engine control dial: maximum position; (2) E mode switch: OFF; HP mode switch: OFF; (4) mode selection switch: general use mode; 5 automatic slow car switch: OFF.
C the excavator starts to walk and pushes the joystick to the full stroke position in the acceleration area.
D measured the time required for medium speed and high speed walking at 10 m respectively.
After measuring the speed of forward movement, e rotated the upper rotary platform 180, and then measured the backward walking speed.
F repeats two steps of D and E, 3 times in each direction, and calculates the average value.
