OPERATIONAL PERFORMANCE TEST / Excavator Test SWING MOTOR LEAKAGE Summary: Measure the upperstructure drift while suspending a load on a specified slope and check the performance of swing parking brake. (The mechanical brake for swing parking brake is equipped for the swing device.) Preparation: 1. Check lubrication of the swing gear and swing bearing. 2. Load bucket fully. In lieu of loading the bucket, weight (W) of the following specification can be used. ZAXIS160LC-3: W=900 kg (1984 lb) ZAXIS180LC-3: W=900 kg (1984 lb) With the arm fully retracted and the bucket fully extended, position the arm top pin height to be level with the boom foot pin. 3.
Park the machine on a smooth slope with a gradient of 26.8 % (15 ° ). 4. Climb a slope and swing the upperstructure to position it 90 ° to the slope. Put the matching marks on the outer circumference of swing bearing (upperstructure side) and track frame by using the tape. 5. Maintain the hydraulic oil temperature at 50 ± 5 ° C (122 ± 41 ° F). T105-06-03-011 T4-4-8