OPERATIONAL PERFORMANCE TEST / Excavator Test TRAVEL PARKING LEAKAGE Summary: Measure the parking brake function on a specified slope. Preparation: 1. The surface of test slope shall be even with a gradient of 20 % (11.31 ° ). 2. With the arm and bucket fully extended, hold the bucket 0.2 to 0.3 m (8 to 12 in) above the ground. 3. Maintain the hydraulic oil temperature at 50 ± 5 ° C (122 ± 41 ° F). Measurement: 0.2 to 0.3 m 1. Measure the travel parking brake slip amount while parked. 2. Climb the slope and place the travel levers in neutral. 3. Stop the engine. 4. After the machine stops, put the matching marks on a track link or shoe and the track side frame. 5.
After 5 minutes, measure the distance between marks on the track link or shoe and the track frame. Evaluation: Refer to the Operational Performance Standard in Group T4-2. T105-06-03-004 Displacement measured after 5 minutes. T105-06-03-006 T4-4-4