OPERATING THE MACHINE Warming-up the Motor and the Cylinders 1 IMPORTANT: • In cold weather, be sure to thoroughly warm-up the motors and cylinders. • If the hydraulic circuit is continuously re- lieved for a certain amount of time, the temperature in the control valve would rise excessively. Never operate to stroke end more than 15 seconds. After relieving any function, up to 15 seconds, be sure to have a 5–10 second intermission. M1U1-01-033 1. Check that the needle of coolant temperature gauge (2) starts moving so that engine coolant warm-up operation is complete. 2. Turn engine control dial (1) to the medium position. 3.
Operate the boom, arm and bucket cylinders slowly to each stroke end several times. 4. Operate travel and swing functions slowly, initially mov- ing only short distances. 2 5. Continue to repeat steps 3 and 4 until bucket cycle time is normal. M1J1-05-001 5-5