1) pre test preparation.
A starts the engine and runs at a fast and slow speed. The lifting function of the manipulator is used to check the movement of the boom cylinder and ensure smooth movement.
The B bucket must be empty. When the bucket is fully extended and the bucket is completely turned over, the bucket will be lowered to the ground.
The temperature of C hydraulic oil is (50 + 5) C.
2) the function test of boom lifting and rotary joint operation.
A selects the following switch positions:
(1) engine control dial: maximum position;
E mode switch: OFF:
HP mode switch: OFF;
Working mode selection switch: general use mode;
Automatic slow car switch: OFF.
B lift the boom at the same time, the joystick is the full stroke. Measure the time used for each cycle.
C when the upper revolving platform revolvers 90, release the joystick back to the neutral position, stop the moving arm lifting and turning. Measure the time required for the gyration 90 and the height of the bucket teeth to the ground.
D repeats the above step 3 times and calculates the average.
