Unit : Seconds / 2 revolutions 6-6 4) SWING SPEED (1) Measure the time required to swing three complete turns. (2) Preparation ① Check the lubrication of the swing gear and swing bearing. ② Place the machine on flat, solid ground with ample space for swinging. Do not conduct this test on slopes. ③ Lower the dozer blade at ground. ④ With the arm rolled out and bucket rolled in, hold the bucket so that the height of the bucket pin is the same as the boom foot pin. The bucket must be empty. ⑤ Keep the hydraulic oil temperature at 50±5˚C. (3) Measurement ① Operate swing control lever fully. ② Swing 1 turn and measure time taken to swing next 2 revolutions.
③ Repeat steps ① and ② three time and calculate the average values. (4) Evaluation The time required for 2 swings should meet the following specifications. Model Standard Maximum allowable Remark R60WVS RRO 15.4±1.0 19.3 -