24. SERVICE PROCEDURE 24.8 EVERY 4000 HOURS SERVICE Carry out maintenance for EVERY 50 HOURS, EVERY 250 HOURS, EVERY 500 HOURS, EVERY 1000 HOURS, and EVERY 2000 HOURS SERVICE at the same time. 24.8.1 REPLACE INJECTION PUMP SCREEN FILTER (If equipped with electronic governor) Remove injection pump cap 1 , then replace screen filter 2 with a new part. The side of the screen filter with the holes is assembled facing the inside. Tightening torque of cap 1 : 22.1 ± 2.45 N•m (2.25 ± 0.25 kgf•m, 16.3 ± 1.8 lbft) A w q AE134620 A – A A 24.8.2 CLEAN INJECTION PUMP OIL INLET STRAINER (If equipped with electronic governor) 1.
Remove oil inlet strainer 1 , soak the whole strainer in diesel oil, then rinse it clean. 2. Blow compressed air in through the oil discharge port at the tip of the strainer. Repeat Steps 1 and 2 two or three times to clean the strainer. Tightening torque of strainer 1 : 11.3 ± 1.47 N•m (1.15 ± 0.15 kgf•m, 8.3 ± 1.1 lbft) Oil outlet Oil inlet AE134630 24.8.3 CHECK WATER PUMP Check for play in the pulley, leakage of grease or water, or clogging of the drain hole. If any abnormality is found, contact your Komatsu distributor for disassembly and repair or replacement 24.8.4 REPLACE CRITICAL PARTS FOR PERIODICAL REPLACEMENT FROM SERVICE KIT For details, see “22.
PERIODIC REPLACEMENT OF SAFETY CRITI- CAL PARTS”. Please contact your Komatsu distributor for replacement of critical parts. 24.8.5 CHECK, ADJUST AIR COMPRESSOR Ask your Komatsu distributor to carry out this work. 24.8.6 CHECK FAN PULLEY AND TENSION PULLEY Check for play of the pulley and leakage of grease. If any abnormality is found, please contact your Komatsu distributor. 24.8.7 CHECK VIBRATION DAMPER Check for any drop in the level of the damper fluid and for runout of the concave surface. If there is any leakage of the damper fluid or dents, please contact your Komatsu distributor for repair. 3-75