12. OPERATION CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL ¤ WARNING When removing the oil filler cap, oil may spurt out, so turn the cap slowly to release the internal pressure before remov- ing the cap. If oil has been added to above the H mark, stop the engine and wait for the hydraulic oil to cool down, then drain the excess oil from the drain plug. 1. If the work equipment is not in the condition shown in the diagram on the right, start the engine, run the engine at low speed, retract the arm and bucket cylinders, then lower the boom, set the bucket teeth in contact with the ground, and stop the engine. 2.
Within 15 seconds after stopping the engine, move each control lever (for work equipment and travel) to the full stroke in all directions to release the internal pressure. AM090210 3. Check sight gauge G . The oil level is normal if between the H and L marks. NOTICE Do not add oil if the level is above the H line. This will damage the hydraulic equipment and cause the oil to spurt out. AM090220 4. If the level is below the L mark, remove the upper cover of the hydraulic tank and add oil through oil filler F . H NOTICE For details of the oil to use, see “20. USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE”.
L REMARK The oil level will vary depending upon the oil temperature. Accordingly, use the following as a guide: Before operation: around L level (Oil temperature 10 to 30°C (50 to 86°F)) Normal operation: around H level (Oil temperature 50 to 80°C (122 to 176°F)) AM090230 CHECK AIR CLEANER FOR CLOGGING 1. Confirm that the air cleaner clogging monitor does not flash. 2. If it flashes, immediately clean or replace the element. For details of method of cleaning the element, see “24.2.1 CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT”. 2-45