OPERATIONAL PERFORMANCE TEST / Excavator Test Measurement: 1. With the arm fully retracted and the bucket fully extended, hold the bucket 100 mm above the ground. Record dial gauge reading (h 1 ). 2. Lower the bucket to the ground and raise the front idler 0.5 m (20 in) by using the front attachment. Record dial gauge reading (h 2 ). 3. Calculate bearing play (H) from this data (h 1 and h 2 ) as follows: H=h 2 -h 1 Evaluation: Refer to the Operational Performance Standard in Group T4-2. Measurement: (h 1 ) 100 mm T105-06-03-007 Measurement: (h 2 ) T105-06-03-017 T4-4-13