3) 3) TRAVEL SPEED TRAVEL SPEED (1) Measure the time required for the excavator to travel a 50 m at high speed and a 20m at low speed test run. (2) (2) ① Preparation Preparation Adjust the pressure of both tires to be equal. Prepare a flat and solid test track 50 m in length, with extra length of 150 m for machine acceleration. Set the traveling position as figure. Keep the hydraulic oil temperature at 50 ± 5 C. ② ③ ④ (3) (3) ① Measurement Measurement Measure both the low and high speed of the machine. Before starting either the low or high speed tests, adjust the RH multifunction switch to the speed to be tested.
Start traveling the machine in the extra length with the two speed switch at high or low speed. Measure the time required to travel 50m at high speed or 20m at low speed. After measuring the forward travel speed, turn the upperstructure 180 and measure the reverse travel speed. Repeat steps ④ and ⑤ three times in each direction and calculate the average values. ② ③ ④ ⑤ 100m 50m High speed : 50m Low speed : 20m ⑥ (4) (4) Evaluation Evaluation The average measured time should meet the following specifications. Unit :
Seconds 6-5 Extra length Test run Extra length Model Travel speed Standard Maximum a llowable Remarks R60WVS RRO Low speed 6.3±0.5 7.9 Seconds/20m High speed 6.0±0.5 7.5 Seconds/50m