OPERATIONAL PERFORMANCE TEST / Wheel Loader Test TRAVEL SPEED Summary: 1. The overall performance of the travel drive system (torque converter through transmission) is judged by measuring the time necessary for traveling 50 m (164 ft). Preparation: 1. Adjust air pressure of the tires evenly in advance. Air pressure: EU: 330 kPa (3.37 kgf/cm 2 , 48 psi) General: 425 kPa (4.34 kgf/cm 2 , 62 psi) 2. On a firm level and uniform supporting surface, prepare a 50 m (164 ft) straight travel course, and 70 m (230 ft) forward and backward runways. (For measurement at Speed 4, a forward runway of 300 m (984 ft) is needed.) 3.
Empty the bucket, and hold the lift arm afloat 0.4 to 0.5 m (1 ft 4 in to 1 ft 8 in) above the ground. 4. Keep the hydraulic oil temperature at 50 ± 5 ° C (122 ± 41 ° F). Warm the axle oil satisfactorily by repeating travel and brake operations. Make a warm up operation so that the indicators of the engine water temperature monitor and the torque converter oil temperature monitor rise above the horizontal positions. Measurement 6. Convert the measurement value to be expressed in km/h. Measurement value (seconds) = S (sec) Converted value (hourly speed) = A (km/h) A = Evaluation: Refer to the Performance Standard Table in Group T4-2. Remedy: Refer to the Trouble Shooting in Section T5.
50 Ч 600 S Ч 1000 0.4 to 0.5 m (1’4” to 1’8”) Travel Course Runway Ending Point Starting Point T4GB-04-04-001 CAUTION: Avoid measurement at reverse for fear of dangers involved. 1. Make measurement for each mode (Speeds 1 to 4). 2. Select the switches as follows. 3. Put the forward-reverse lever at the F (Forward) position. From the runway, travel by depression the accelerator pedal to the stroke end. 4. Measure the travel speed (sec) of each travel mode. 5. Make measurement three times, and determine the measurement value by obtaining their mean values.
T4-4-1 Shift Switch Parking Brake Switch Accelerator Pedal Travel Mode Switch Work Mode Switch Speed 1 Speed 1 OFF Full depression H N Speed 2 Speed 2 OFF Full depression H N Speed 3 Speed 3 OFF Full depression H N Speed 4 Speed 4 OFF Full depression H N