23.
MAINTENANCE SCHEDULE CHART SERVICE ITEM PAGE EVERY 1000 HOURS SERVICE Change oil in swing machinary case 3-65 Check oil level in damper case, add oil 3-66 Check all tightening parts of turbocharger 3-66 Check play of turbocharger rotor 3-66 Replace corrosion resistor cartridge 3-67 EVERY 2000 HOURS SERVICE Change oil in final drive case 3-68 Clean hydraulic tank strainer 3-69 Clean engine breather 3-72 Clean, check turbocharger 3-73 Check alternator, starting motor 3-73 Check engine valve clearance, adjust 3-73 Check vibration damper 3-73 EVERY 4000 HOURS SERVICE Check water pump 3-74 EVERY 5000 HOURS SERVICE Change oil in hydraulic tank 3-75 23.2 MAINTENANCE INTERVAL WHEN USING HYDRAULIC BREAKER For machines equipped with a hydraulic breaker, the hydraulic oil deteriorates faster than for normal bucket digging operations, so set the maintenance intervals as follows.
Replacing hydraulic element On new machines, replace the element after the first 100 to 150 hours, then carry out further replacement of the element accord- ing to the table on the right. Changing oil in hydraulic tank Change the oil according to the table on the right. Replacing additional filter element for breaker Use a guideline of 250 hours for use of the breaker (operating ratio for the breaker: 50 % or more), and replace the element according to the table on the right. 3-22