1) pre test preparation.
A adjusts the sag of the two tracks to make the two tracks consistent.
B marks a track plate on the side of the test with chalk.
C revolving the upper revolving platform 90. The angle of the arm and the bucket is 90~110. After the bucket is lowered to the ground, the caterpillar will be lifted off the ground and the block is used under the machine.
The temperature of D hydraulic oil is kept at (50 + 5) C.
2) the detection of the speed of the crawler rotation.
A selects the following switch position:
(1) engine control dial: maximum position; (2) E mode switch: OFF: (HP) mode switch: OFF; (4) working mode selection switch: general use mode; (6) automatic slow car switch: OFF.
B pushes the lifting joystick on the side to the full stroke position.
C when the track speed is stable, the time required for the track to rotate 3 times in two directions of forward and backward is measured.
D put the other side of the track up and repeat the above steps.
E repeats the above step 3 times and calculates its average value.
