OPERATION MACHINE OPERATIONS AND CONTROLS 3. Operate right work equipment control lever (3) slowly, pull the bucket into the stop position, and hold it there for 5 min- utes. 4. After warming up the engine, check that each gauge and monitor lamp indicates the following. If there is any abnormality, carry out maintenance and repair. Engine coolant temperature gauge (4): Inside green range Fuel gauge (5): Inside green range Engine oil pressure gauge (6): OFF Charge level monitor (7): OFF Electronic control system monitor (9): OFF 5. Check that there is no abnormal exhaust gas color, noise, or vibration. If any abnormality is found, contact your Komatsu distributor. 6.
Set lock lever (2) to the LOCK position and check that it is impossible to operate the swing and work equipment with the left and right work equipment control levers. 7. Set safety lock lever (2) to the FREE position and inspect the following interference protection action. Set the work equipment to the maximum left offset posture shown in the diagram on the right, then raise the boom and check that it stops automatically when it comes close to the operator's compartment. When it stops, lower the boom and cancel the automatic stop. 3-49