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: 325 kPa (3.25 kgf/cm 2 , 46.2 psi) 2. On a firm, level and ground, prepare a 50 m (164 ft) straight travel course, and 70 m (230 ft) accel- eration/deceleration zones. (For measurement at speed 4, a acceleration zone of 300 m (984 ft) is needed.) 3. Empty the bucket, and hold the lift arm at 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 ± 9 ° F). Warm the axle oil by repeating travel and brake operations. Warm up the engine so that the needle of the in- dicators of the engine coolant temperature gauge and the torque converter oil temperature gauge rise above the horizontal positions. Measurement: 6. Convert the measurement value into km/h. Measurement value (seconds) = S (sec) Converted value (hourly speed) = A (km/h) A = Evaluation: Refer to Performance Standard Table in Group T4-2. Remedy: Refer to Trouble Shooting in Section T5. 50 Ч 600 S Ч 1000 0.4 to 0.5 m (1’4” to 1’8”) Travel Course Acceleration Zone End Start T4GB-04-04-001 CAUTION:
Avoid measurement during travel reverse operation for dangers. 1. Measure for each mode (Speeds 1 to 4). 2. Select the switches as follows. 3. Set the FNR lever at F (Forward) position. Start driving the vehicle from the acceleration zone with the accelerator pedal at full stroke. 4. Measure the travel speed (sec) of each travel mode. 5. Repeat measurement three times and calculate the average 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