OPERATIONAL PERFORMANCE TEST / Component Test SWING MOTOR DRAINAGE Summary: 1. Measure amount of oil draining from the swing motor while swinging the upperstructure and check the swing motor performance. 2. The amount of drain oil from the swing motor will change depending on hydraulic oil temperature. CAUTION: Prevent personal injury. Always make sure that the area is clear and that co-workers are out of the swing area before starting the measurement. Also, take care not to fall off the machine while the measurement. Preparation: 1. Maintain hydraulic oil temperature at 50 ± 5 ° C (122 ± 41 ° F). Rotate the swing motor in order to warm inside of the motor. 2. Stop the engine.
Push air bleed valve (1) on top of the hydraulic oil tank and release any remaining pressure. 3. Remove drain hose (2) of the swing motor at the hydraulic oil tank end. Install plug (ST 6213) to the Remove end on the hydraulic oil tank. 1 T157-05-04-014 : 22 mm : 39 N m (4 kgf m, 29 lbf ft) T178-04-04-005 T4-5-26 2