OPERATIONAL PERFORMANCE TEST / Component Test TRAVEL MOTOR DRAINAGE Summary: 1. While rotating the travel motor with the track to be measured jacked up, measure amount of oil draining from the travel motor and check travel motor performance. 2. Judge travel motor performance from the results including travel speed, mistrack and so on overall. 3. The amount of drain oil from the travel 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 before starting the meas- urement. Also, take care not to fall off the machine while the measurement. Preparation: 1.
Main hydraulic oil temperature at 50 ± 5 ° C (122 ± 41 ° F). Rotate the travel motor and 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) in the travel motor at the travel motor end. Install plug (ST 6637) to the removed end. Install the drain hose (3/4-16UN) to the travel motor. 1 T157-05-04-014 2 : 78 N m (8.0 kgf m, 58 lbf ft) Preconditions for Measurement: 1. Select the following switch positions: : 27 mm M178-07-047 T4-5-29 Engine Control Dial Power Mode Switch Auto-Idle Switch Work Mode Fast Idle P Mode OFF Digging Mode