Unit : Seconds / 3 revolutions 7-5 3)TRAVEL SPEED (1)Measure the time required for the excavator to travel a 20 m test track. (2)Preparation ①Adjust the tension of both tracks to be equal. ②Prepare a flat and solid test track 20 m in length, with extra length of 3 to 5 m on both ends for machine acceleration and deceleration. ③Hold the bucket 0.3 to 0.5 m above the ground with the arm and bucket rolled in. ④Keep the hydraulic oil temperature at 50±5˚C. (3)Measurement ①Measure both the low and high speeds of the machine. ②Before starting either the low or high speed tests, adjust the travel mode switch to the speed to be tested, then select the following switch positions. ·Power mode switch :
P mode ③Start traveling the machine in the acceleration zone with the travel levers at full stroke. ④Measure the time required to travel 20 m. ⑤After measuring the forward travel speed, turn the upperstructure 180。and measure the reverse travel speed. ⑥Repeat steps ④ and ⑤ three times in each direction and calculate the average values. (4)Evaluation 0.3~0.5m 3~5m 20m 3~5m 0.3~0.5m (4) The average measured time should meet t he following specifications. Model Travel speed Standard R505LVS 1 Speed 2 Speed 22.6±2.0 14.0±1.0